diff --git a/test/common/assertSnapshot.js b/test/common/assertSnapshot.js
index 16509f12ee89fc..0e350cd1dac6fa 100644
--- a/test/common/assertSnapshot.js
+++ b/test/common/assertSnapshot.js
@@ -4,6 +4,7 @@ const path = require('node:path');
 const test = require('node:test');
 const fs = require('node:fs/promises');
 const assert = require('node:assert/strict');
+const { hostname } = require('node:os');
 
 const stackFramesRegexp = /(?<=\n)(\s+)((.+?)\s+\()?(?:\(?(.+?):(\d+)(?::(\d+))?)\)?(\s+\{)?(\[\d+m)?(\n|$)/g;
 const windowNewlineRegexp = /\r/g;
@@ -100,6 +101,97 @@ async function spawnAndAssert(filename, transform = (x) => x, { tty = false, ...
   await assertSnapshot(transform(`${stdout}${stderr}`), filename);
 }
 
+function replaceTestDuration(str) {
+  return str
+    .replaceAll(/duration_ms: [0-9.]+/g, 'duration_ms: *')
+    .replaceAll(/duration_ms [0-9.]+/g, 'duration_ms *');
+}
+
+const root = path.resolve(__dirname, '..', '..');
+const color = '(\\[\\d+m)';
+const stackTraceBasePath = new RegExp(`${color}\\(${root.replaceAll(/[\\^$*+?.()|[\]{}]/g, '\\$&')}/?${color}(.*)${color}\\)`, 'g');
+
+function replaceSpecDuration(str) {
+  return str
+    .replaceAll(/[0-9.]+ms/g, '*ms')
+    .replaceAll(/duration_ms [0-9.]+/g, 'duration_ms *')
+    .replace(stackTraceBasePath, '$3');
+}
+
+function replaceJunitDuration(str) {
+  return str
+    .replaceAll(/time="[0-9.]+"/g, 'time="*"')
+    .replaceAll(/duration_ms [0-9.]+/g, 'duration_ms *')
+    .replaceAll(`hostname="${hostname()}"`, 'hostname="HOSTNAME"')
+    .replaceAll(/file="[^"]*"/g, 'file="*"')
+    .replace(stackTraceBasePath, '$3');
+}
+
+function removeWindowsPathEscaping(str) {
+  return common.isWindows ? str.replaceAll(/\\\\/g, '\\') : str;
+}
+
+function replaceTestLocationLine(str) {
+  return str.replaceAll(/(js:)(\d+)(:\d+)/g, '$1(LINE)$3');
+}
+
+// The Node test coverage returns results for all files called by the test. This
+// will make the output file change if files like test/common/index.js change.
+// This transform picks only the first line and then the lines from the test
+// file.
+function pickTestFileFromLcov(str) {
+  const lines = str.split(/\n/);
+  const firstLineOfTestFile = lines.findIndex(
+    (line) => line.startsWith('SF:') && line.trim().endsWith('output.js'),
+  );
+  const lastLineOfTestFile = lines.findIndex(
+    (line, index) => index > firstLineOfTestFile && line.trim() === 'end_of_record',
+  );
+  return (
+    lines[0] + '\n' + lines.slice(firstLineOfTestFile, lastLineOfTestFile + 1).join('\n') + '\n'
+  );
+}
+
+const defaultTransform = transform(
+  replaceWindowsLineEndings,
+  replaceStackTrace,
+  removeWindowsPathEscaping,
+  transformProjectRoot(),
+  replaceWindowsPaths,
+  replaceTestDuration,
+  replaceTestLocationLine,
+);
+const specTransform = transform(
+  replaceSpecDuration,
+  replaceWindowsLineEndings,
+  replaceStackTrace,
+  replaceWindowsPaths,
+);
+const junitTransform = transform(
+  replaceJunitDuration,
+  replaceWindowsLineEndings,
+  replaceStackTrace,
+  replaceWindowsPaths,
+);
+const lcovTransform = transform(
+  replaceWindowsLineEndings,
+  replaceStackTrace,
+  transformProjectRoot(),
+  replaceWindowsPaths,
+  pickTestFileFromLcov,
+);
+
+function ensureCwdIsProjectRoot() {
+  if (process.cwd() !== root) {
+    process.chdir(root);
+  }
+}
+
+function canColorize() {
+  // Loading it lazily to avoid breaking `NODE_REGENERATE_SNAPSHOTS`.
+  return require('internal/tty').getColorDepth() > 2;
+}
+
 module.exports = {
   assertSnapshot,
   getSnapshotPath,
@@ -111,4 +203,11 @@ module.exports = {
   spawnAndAssert,
   transform,
   transformProjectRoot,
+  replaceTestDuration,
+  defaultTransform,
+  specTransform,
+  junitTransform,
+  lcovTransform,
+  ensureCwdIsProjectRoot,
+  canColorize,
 };
diff --git a/test/parallel/test-runner-output.mjs b/test/parallel/test-runner-output.mjs
deleted file mode 100644
index f854447c4526b1..00000000000000
--- a/test/parallel/test-runner-output.mjs
+++ /dev/null
@@ -1,358 +0,0 @@
-// Flags: --expose-internals
-import * as common from '../common/index.mjs';
-import * as fixtures from '../common/fixtures.mjs';
-import * as snapshot from '../common/assertSnapshot.js';
-import { describe, it } from 'node:test';
-import { hostname } from 'node:os';
-import { chdir, cwd } from 'node:process';
-import { fileURLToPath } from 'node:url';
-
-const skipForceColors =
-  process.config.variables.icu_gyp_path !== 'tools/icu/icu-generic.gyp' ||
-  process.config.variables.node_shared_openssl;
-
-// We're using dynamic import here to not break `NODE_REGENERATE_SNAPSHOTS`.
-const canColorize = (await import('internal/tty')).default.getColorDepth() > 2;
-const skipCoverageColors = !canColorize;
-
-function replaceTestDuration(str) {
-  return str
-    .replaceAll(/duration_ms: [0-9.]+/g, 'duration_ms: *')
-    .replaceAll(/duration_ms [0-9.]+/g, 'duration_ms *');
-}
-
-const root = fileURLToPath(new URL('../..', import.meta.url)).slice(0, -1);
-
-const color = '(\\[\\d+m)';
-const stackTraceBasePath = new RegExp(`${color}\\(${root.replaceAll(/[\\^$*+?.()|[\]{}]/g, '\\$&')}/?${color}(.*)${color}\\)`, 'g');
-
-function replaceSpecDuration(str) {
-  return str
-    .replaceAll(/[0-9.]+ms/g, '*ms')
-    .replaceAll(/duration_ms [0-9.]+/g, 'duration_ms *')
-    .replace(stackTraceBasePath, '$3');
-}
-
-function replaceJunitDuration(str) {
-  return str
-    .replaceAll(/time="[0-9.]+"/g, 'time="*"')
-    .replaceAll(/duration_ms [0-9.]+/g, 'duration_ms *')
-    .replaceAll(`hostname="${hostname()}"`, 'hostname="HOSTNAME"')
-    .replaceAll(/file="[^"]*"/g, 'file="*"')
-    .replace(stackTraceBasePath, '$3');
-}
-
-function removeWindowsPathEscaping(str) {
-  return common.isWindows ? str.replaceAll(/\\\\/g, '\\') : str;
-}
-
-function replaceTestLocationLine(str) {
-  return str.replaceAll(/(js:)(\d+)(:\d+)/g, '$1(LINE)$3');
-}
-
-// The Node test coverage returns results for all files called by the test. This
-// will make the output file change if files like test/common/index.js change.
-// This transform picks only the first line and then the lines from the test
-// file.
-function pickTestFileFromLcov(str) {
-  const lines = str.split(/\n/);
-  const firstLineOfTestFile = lines.findIndex(
-    (line) => line.startsWith('SF:') && line.trim().endsWith('output.js')
-  );
-  const lastLineOfTestFile = lines.findIndex(
-    (line, index) => index > firstLineOfTestFile && line.trim() === 'end_of_record'
-  );
-  return (
-    lines[0] + '\n' + lines.slice(firstLineOfTestFile, lastLineOfTestFile + 1).join('\n') + '\n'
-  );
-}
-
-const defaultTransform = snapshot.transform(
-  snapshot.replaceWindowsLineEndings,
-  snapshot.replaceStackTrace,
-  removeWindowsPathEscaping,
-  snapshot.transformProjectRoot(),
-  snapshot.replaceWindowsPaths,
-  replaceTestDuration,
-  replaceTestLocationLine,
-);
-const specTransform = snapshot.transform(
-  replaceSpecDuration,
-  snapshot.replaceWindowsLineEndings,
-  snapshot.replaceStackTrace,
-  snapshot.replaceWindowsPaths,
-);
-const junitTransform = snapshot.transform(
-  replaceJunitDuration,
-  snapshot.replaceWindowsLineEndings,
-  snapshot.replaceStackTrace,
-  snapshot.replaceWindowsPaths,
-);
-const lcovTransform = snapshot.transform(
-  snapshot.replaceWindowsLineEndings,
-  snapshot.replaceStackTrace,
-  snapshot.transformProjectRoot(),
-  snapshot.replaceWindowsPaths,
-  pickTestFileFromLcov
-);
-
-
-const tests = [
-  { name: 'test-runner/output/abort.js', flags: ['--test-reporter=tap'] },
-  {
-    name: 'test-runner/output/abort-runs-after-hook.js',
-    flags: ['--test-reporter=tap'],
-  },
-  { name: 'test-runner/output/abort_suite.js', flags: ['--test-reporter=tap'] },
-  { name: 'test-runner/output/abort_hooks.js', flags: ['--test-reporter=tap'] },
-  { name: 'test-runner/output/describe_it.js', flags: ['--test-reporter=tap'] },
-  {
-    name: 'test-runner/output/describe_nested.js',
-    flags: ['--test-reporter=tap'],
-  },
-  { name: 'test-runner/output/eval_dot.js', transform: specTransform },
-  { name: 'test-runner/output/eval_spec.js', transform: specTransform },
-  { name: 'test-runner/output/eval_tap.js' },
-  {
-    name: 'test-runner/output/filtered-suite-delayed-build.js',
-    flags: ['--test-reporter=tap'],
-  },
-  {
-    name: 'test-runner/output/filtered-suite-order.mjs',
-    flags: ['--test-reporter=tap'],
-  },
-  {
-    name: 'test-runner/output/filtered-suite-throws.js',
-    flags: ['--test-reporter=tap'],
-  },
-  { name: 'test-runner/output/hooks.js', flags: ['--test-reporter=tap'] },
-  { name: 'test-runner/output/hooks_spec_reporter.js', transform: specTransform },
-  { name: 'test-runner/output/skip-each-hooks.js', transform: specTransform },
-  { name: 'test-runner/output/suite-skip-hooks.js', transform: specTransform },
-  {
-    name: 'test-runner/output/timeout_in_before_each_should_not_affect_further_tests.js',
-    flags: ['--test-reporter=tap'],
-  },
-  {
-    name: 'test-runner/output/test-timeout-flag.js',
-    flags: [
-      '--test-reporter=tap',
-      '--test-timeout=100',
-    ],
-  },
-  // --test-timeout should work with or without --test flag
-  {
-    name: 'test-runner/output/test-timeout-flag.js',
-    flags: [
-      '--test-reporter=tap',
-      '--test-timeout=100',
-      '--test',
-    ],
-  },
-  {
-    name: 'test-runner/output/hooks-with-no-global-test.js',
-    flags: ['--test-reporter=tap'],
-  },
-  {
-    name: 'test-runner/output/global-hooks-with-no-tests.js',
-    flags: ['--test-reporter=tap'],
-  },
-  {
-    name: 'test-runner/output/before-and-after-each-too-many-listeners.js',
-    flags: ['--test-reporter=tap'],
-  },
-  {
-    name: 'test-runner/output/before-and-after-each-with-timeout-too-many-listeners.js',
-    flags: ['--test-reporter=tap'],
-  },
-  { name: 'test-runner/output/force_exit.js', transform: specTransform },
-  {
-    name: 'test-runner/output/global_after_should_fail_the_test.js',
-    flags: ['--test-reporter=tap'],
-  },
-  {
-    name: 'test-runner/output/no_refs.js',
-    flags: ['--test-reporter=tap'],
-  },
-  {
-    name: 'test-runner/output/no_tests.js',
-    flags: ['--test-reporter=tap'],
-  },
-  { name: 'test-runner/output/only_tests.js', flags: ['--test-reporter=tap'] },
-  { name: 'test-runner/output/dot_reporter.js', transform: specTransform },
-  { name: 'test-runner/output/junit_reporter.js', transform: junitTransform },
-  { name: 'test-runner/output/spec_reporter_successful.js', transform: specTransform },
-  { name: 'test-runner/output/spec_reporter.js', transform: specTransform },
-  { name: 'test-runner/output/spec_reporter_cli.js', transform: specTransform },
-  {
-    name: 'test-runner/output/source_mapped_locations.mjs',
-    flags: ['--test-reporter=tap'],
-  },
-  process.features.inspector ?
-    {
-      name: 'test-runner/output/lcov_reporter.js',
-      transform: lcovTransform
-    } :
-    false,
-  { name: 'test-runner/output/output.js', flags: ['--test-reporter=tap'] },
-  { name: 'test-runner/output/output_cli.js' },
-  {
-    name: 'test-runner/output/name_and_skip_patterns.js',
-    flags: ['--test-reporter=tap'],
-  },
-  {
-    name: 'test-runner/output/name_pattern.js',
-    flags: ['--test-reporter=tap'],
-  },
-  {
-    name: 'test-runner/output/name_pattern_with_only.js',
-    flags: ['--test-reporter=tap'],
-  },
-  {
-    name: 'test-runner/output/skip_pattern.js',
-    flags: ['--test-reporter=tap'],
-  },
-  {
-    name: 'test-runner/output/unfinished-suite-async-error.js',
-    flags: ['--test-reporter=tap'],
-  },
-  { name: 'test-runner/output/default_output.js', transform: specTransform, tty: true },
-  {
-    name: 'test-runner/output/arbitrary-output.js',
-    flags: ['--test-reporter=tap'],
-  },
-  {
-    name: 'test-runner/output/non-tty-forced-color-output.js',
-    transform: specTransform,
-  },
-  canColorize ? {
-    name: 'test-runner/output/assertion-color-tty.mjs',
-    flags: ['--test', '--stack-trace-limit=0'],
-    transform: specTransform,
-    tty: true,
-  } : false,
-  {
-    name: 'test-runner/output/async-test-scheduling.mjs',
-    flags: ['--test-reporter=tap'],
-  },
-  !skipForceColors ? {
-    name: 'test-runner/output/arbitrary-output-colored.js',
-    transform: snapshot.transform(specTransform, replaceTestDuration), tty: true
-  } : false,
-  { name: 'test-runner/output/dot_output_custom_columns.js', transform: specTransform, tty: true },
-  {
-    name: 'test-runner/output/tap_escape.js',
-    transform: snapshot.transform(
-      snapshot.replaceWindowsLineEndings,
-      replaceTestDuration,
-    ),
-    flags: ['--test-reporter=tap'],
-  },
-  {
-    name: 'test-runner/output/test-runner-plan.js',
-    flags: ['--test-reporter=tap'],
-  },
-  {
-    name: 'test-runner/output/test-runner-watch-spec.mjs',
-    transform: specTransform,
-  },
-  {
-    name: 'test-runner/output/test-runner-plan-timeout.js',
-    flags: ['--test-reporter=tap', '--test-force-exit'],
-  },
-  process.features.inspector ? {
-    name: 'test-runner/output/coverage_failure.js',
-    flags: ['--test-reporter=tap', '--test-coverage-exclude=!test/**'],
-  } : false,
-  {
-    name: 'test-runner/output/test-diagnostic-warning-without-test-only-flag.js',
-    flags: ['--test', '--test-reporter=tap'],
-  },
-  process.features.inspector ? {
-    name: 'test-runner/output/coverage-width-40.mjs',
-    flags: ['--test-reporter=tap', '--test-coverage-exclude=!test/**'],
-  } : false,
-  process.features.inspector ? {
-    name: 'test-runner/output/coverage-width-80.mjs',
-    flags: ['--test-reporter=tap', '--test-coverage-exclude=!test/**'],
-  } : false,
-  process.features.inspector && !skipCoverageColors ? {
-    name: 'test-runner/output/coverage-width-80-color.mjs',
-    flags: ['--test-coverage-exclude=!test/**'],
-    transform: specTransform,
-    tty: true
-  } : false,
-  process.features.inspector ? {
-    name: 'test-runner/output/coverage-width-100.mjs',
-    flags: ['--test-reporter=tap', '--test-coverage-exclude=!test/**'],
-  } : false,
-  process.features.inspector ? {
-    name: 'test-runner/output/coverage-width-150.mjs',
-    flags: ['--test-reporter=tap', '--test-coverage-exclude=!test/**'],
-  } : false,
-  process.features.inspector ? {
-    name: 'test-runner/output/coverage-width-infinity.mjs',
-    flags: ['--test-reporter=tap', '--test-coverage-exclude=!test/**'],
-  } : false,
-  process.features.inspector ? {
-    name: 'test-runner/output/coverage-width-80-uncovered-lines.mjs',
-    flags: ['--test-reporter=tap', '--test-coverage-exclude=!test/**'],
-  } : false,
-  process.features.inspector ? {
-    name: 'test-runner/output/coverage-width-100-uncovered-lines.mjs',
-    flags: ['--test-reporter=tap', '--test-coverage-exclude=!test/**'],
-  } : false,
-  process.features.inspector && !skipCoverageColors ? {
-    name: 'test-runner/output/coverage-width-80-uncovered-lines-color.mjs',
-    flags: ['--test-coverage-exclude=!test/**'],
-    transform: specTransform,
-    tty: true
-  } : false,
-  process.features.inspector ? {
-    name: 'test-runner/output/coverage-width-150-uncovered-lines.mjs',
-    flags: ['--test-reporter=tap', '--test-coverage-exclude=!test/**'],
-  } : false,
-  process.features.inspector ? {
-    name: 'test-runner/output/coverage-width-infinity-uncovered-lines.mjs',
-    flags: ['--test-reporter=tap', '--test-coverage-exclude=!test/**'],
-  } : false,
-  process.features.inspector ? {
-    name: 'test-runner/output/coverage-short-filename.mjs',
-    flags: ['--test-reporter=tap', '--test-coverage-exclude=../output/**'],
-    cwd: fixtures.path('test-runner/coverage-snap'),
-  } : false,
-  process.features.inspector ? {
-    name: 'test-runner/output/typescript-coverage.mts',
-    flags: ['--disable-warning=ExperimentalWarning',
-            '--test-reporter=tap',
-            '--experimental-transform-types',
-            '--experimental-test-module-mocks',
-            '--experimental-test-coverage',
-            '--test-coverage-exclude=!test/**']
-  } : false,
-  process.features.inspector ? {
-    name: 'test-runner/output/coverage-with-mock.mjs',
-    flags: ['--disable-warning=ExperimentalWarning',
-            '--test-reporter=tap',
-            '--experimental-transform-types',
-            '--experimental-test-module-mocks',
-            '--experimental-test-coverage',
-            '--test-coverage-exclude=!test/**']
-  } : false,
-]
-.filter(Boolean)
-.map(({ flags, name, tty, transform, cwd }) => ({
-  name,
-  fn: common.mustCall(async () => {
-    await snapshot.spawnAndAssert(fixtures.path(name), transform ?? defaultTransform, { tty, flags, cwd });
-  }),
-}));
-
-if (cwd() !== root) {
-  chdir(root);
-}
-describe('test runner output', { concurrency: true }, () => {
-  for (const { name, fn } of tests) {
-    it(name, fn);
-  }
-});
diff --git a/test/test-runner/test-output-abort-hooks.mjs b/test/test-runner/test-output-abort-hooks.mjs
new file mode 100644
index 00000000000000..2bb1898c5cc7bd
--- /dev/null
+++ b/test/test-runner/test-output-abort-hooks.mjs
@@ -0,0 +1,11 @@
+// Test that the output of test-runner/output/abort_hooks.js matches test-runner/output/abort_hooks.snapshot
+import '../common/index.mjs';
+import * as fixtures from '../common/fixtures.mjs';
+import { spawnAndAssert, defaultTransform, ensureCwdIsProjectRoot } from '../common/assertSnapshot.js';
+
+ensureCwdIsProjectRoot();
+await spawnAndAssert(
+  fixtures.path('test-runner/output/abort_hooks.js'),
+  defaultTransform,
+  { flags: ['--test-reporter=tap'] },
+);
diff --git a/test/test-runner/test-output-abort-runs-after-hook.mjs b/test/test-runner/test-output-abort-runs-after-hook.mjs
new file mode 100644
index 00000000000000..e8716bb08333f7
--- /dev/null
+++ b/test/test-runner/test-output-abort-runs-after-hook.mjs
@@ -0,0 +1,12 @@
+// Test that the output of test-runner/output/abort-runs-after-hook.js matches
+// test-runner/output/abort-runs-after-hook.snapshot
+import '../common/index.mjs';
+import * as fixtures from '../common/fixtures.mjs';
+import { spawnAndAssert, defaultTransform, ensureCwdIsProjectRoot } from '../common/assertSnapshot.js';
+
+ensureCwdIsProjectRoot();
+await spawnAndAssert(
+  fixtures.path('test-runner/output/abort-runs-after-hook.js'),
+  defaultTransform,
+  { flags: ['--test-reporter=tap'] },
+);
diff --git a/test/test-runner/test-output-abort-suite.mjs b/test/test-runner/test-output-abort-suite.mjs
new file mode 100644
index 00000000000000..c3f1b4625b4f5f
--- /dev/null
+++ b/test/test-runner/test-output-abort-suite.mjs
@@ -0,0 +1,11 @@
+// Test that the output of test-runner/output/abort_suite.js matches test-runner/output/abort_suite.snapshot
+import '../common/index.mjs';
+import * as fixtures from '../common/fixtures.mjs';
+import { spawnAndAssert, defaultTransform, ensureCwdIsProjectRoot } from '../common/assertSnapshot.js';
+
+ensureCwdIsProjectRoot();
+await spawnAndAssert(
+  fixtures.path('test-runner/output/abort_suite.js'),
+  defaultTransform,
+  { flags: ['--test-reporter=tap'] },
+);
diff --git a/test/test-runner/test-output-abort.mjs b/test/test-runner/test-output-abort.mjs
new file mode 100644
index 00000000000000..b361bc68035824
--- /dev/null
+++ b/test/test-runner/test-output-abort.mjs
@@ -0,0 +1,11 @@
+// Test that the output of test-runner/output/abort.js matches test-runner/output/abort.snapshot
+import '../common/index.mjs';
+import * as fixtures from '../common/fixtures.mjs';
+import { spawnAndAssert, defaultTransform, ensureCwdIsProjectRoot } from '../common/assertSnapshot.js';
+
+ensureCwdIsProjectRoot();
+await spawnAndAssert(
+  fixtures.path('test-runner/output/abort.js'),
+  defaultTransform,
+  { flags: ['--test-reporter=tap'] },
+);
diff --git a/test/test-runner/test-output-arbitrary-output-colored.mjs b/test/test-runner/test-output-arbitrary-output-colored.mjs
new file mode 100644
index 00000000000000..77a13d8890430e
--- /dev/null
+++ b/test/test-runner/test-output-arbitrary-output-colored.mjs
@@ -0,0 +1,27 @@
+// Test that the output of test-runner/output/arbitrary-output-colored.js matches
+// test-runner/output/arbitrary-output-colored.snapshot
+import * as common from '../common/index.mjs';
+import * as fixtures from '../common/fixtures.mjs';
+import {
+  spawnAndAssert,
+  specTransform,
+  replaceTestDuration,
+  transform,
+  ensureCwdIsProjectRoot,
+} from '../common/assertSnapshot.js';
+
+const skipForceColors =
+  process.config.variables.icu_gyp_path !== 'tools/icu/icu-generic.gyp' ||
+  process.config.variables.node_shared_openssl;
+
+if (skipForceColors) {
+  // https://github.com/nodejs/node/pull/48057
+  common.skip('Forced colors not supported in this build');
+}
+
+ensureCwdIsProjectRoot();
+await spawnAndAssert(
+  fixtures.path('test-runner/output/arbitrary-output-colored.js'),
+  transform(specTransform, replaceTestDuration),
+  { tty: true },
+);
diff --git a/test/test-runner/test-output-arbitrary-output.mjs b/test/test-runner/test-output-arbitrary-output.mjs
new file mode 100644
index 00000000000000..d7626bb01856fa
--- /dev/null
+++ b/test/test-runner/test-output-arbitrary-output.mjs
@@ -0,0 +1,12 @@
+// Test that the output of test-runner/output/arbitrary-output.js matches
+// test-runner/output/arbitrary-output.snapshot
+import '../common/index.mjs';
+import * as fixtures from '../common/fixtures.mjs';
+import { spawnAndAssert, defaultTransform, ensureCwdIsProjectRoot } from '../common/assertSnapshot.js';
+
+ensureCwdIsProjectRoot();
+await spawnAndAssert(
+  fixtures.path('test-runner/output/arbitrary-output.js'),
+  defaultTransform,
+  { flags: ['--test-reporter=tap'] },
+);
diff --git a/test/test-runner/test-output-assertion-color-tty.mjs b/test/test-runner/test-output-assertion-color-tty.mjs
new file mode 100644
index 00000000000000..102b397c815746
--- /dev/null
+++ b/test/test-runner/test-output-assertion-color-tty.mjs
@@ -0,0 +1,17 @@
+// Flags: --expose-internals
+// Test that the output of test-runner/output/assertion-color-tty.mjs matches
+// test-runner/output/assertion-color-tty.snapshot
+import * as common from '../common/index.mjs';
+import * as fixtures from '../common/fixtures.mjs';
+import { spawnAndAssert, specTransform, canColorize, ensureCwdIsProjectRoot } from '../common/assertSnapshot.js';
+
+if (!canColorize()) {
+  common.skip('TTY colors not supported');
+}
+
+ensureCwdIsProjectRoot();
+await spawnAndAssert(
+  fixtures.path('test-runner/output/assertion-color-tty.mjs'),
+  specTransform,
+  { flags: ['--test', '--stack-trace-limit=0'], tty: true },
+);
diff --git a/test/test-runner/test-output-async-test-scheduling.mjs b/test/test-runner/test-output-async-test-scheduling.mjs
new file mode 100644
index 00000000000000..5903619f7e1266
--- /dev/null
+++ b/test/test-runner/test-output-async-test-scheduling.mjs
@@ -0,0 +1,12 @@
+// Test that the output of test-runner/output/async-test-scheduling.mjs matches
+// test-runner/output/async-test-scheduling.snapshot
+import '../common/index.mjs';
+import * as fixtures from '../common/fixtures.mjs';
+import { spawnAndAssert, defaultTransform, ensureCwdIsProjectRoot } from '../common/assertSnapshot.js';
+
+ensureCwdIsProjectRoot();
+await spawnAndAssert(
+  fixtures.path('test-runner/output/async-test-scheduling.mjs'),
+  defaultTransform,
+  { flags: ['--test-reporter=tap'] },
+);
diff --git a/test/test-runner/test-output-before-and-after-each-too-many-listeners.mjs b/test/test-runner/test-output-before-and-after-each-too-many-listeners.mjs
new file mode 100644
index 00000000000000..bcaec70b17276a
--- /dev/null
+++ b/test/test-runner/test-output-before-and-after-each-too-many-listeners.mjs
@@ -0,0 +1,12 @@
+// Test that the output of test-runner/output/before-and-after-each-too-many-listeners.js matches
+// test-runner/output/before-and-after-each-too-many-listeners.snapshot
+import '../common/index.mjs';
+import * as fixtures from '../common/fixtures.mjs';
+import { spawnAndAssert, defaultTransform, ensureCwdIsProjectRoot } from '../common/assertSnapshot.js';
+
+ensureCwdIsProjectRoot();
+await spawnAndAssert(
+  fixtures.path('test-runner/output/before-and-after-each-too-many-listeners.js'),
+  defaultTransform,
+  { flags: ['--test-reporter=tap'] },
+);
diff --git a/test/test-runner/test-output-before-and-after-each-with-timeout-too-many-listeners.mjs b/test/test-runner/test-output-before-and-after-each-with-timeout-too-many-listeners.mjs
new file mode 100644
index 00000000000000..7804692911aeda
--- /dev/null
+++ b/test/test-runner/test-output-before-and-after-each-with-timeout-too-many-listeners.mjs
@@ -0,0 +1,12 @@
+// Test that the output of test-runner/output/before-and-after-each-with-timeout-too-many-listeners.js matches
+// test-runner/output/before-and-after-each-with-timeout-too-many-listeners.snapshot
+import '../common/index.mjs';
+import * as fixtures from '../common/fixtures.mjs';
+import { spawnAndAssert, defaultTransform, ensureCwdIsProjectRoot } from '../common/assertSnapshot.js';
+
+ensureCwdIsProjectRoot();
+await spawnAndAssert(
+  fixtures.path('test-runner/output/before-and-after-each-with-timeout-too-many-listeners.js'),
+  defaultTransform,
+  { flags: ['--test-reporter=tap'] },
+);
diff --git a/test/test-runner/test-output-coverage-failure.mjs b/test/test-runner/test-output-coverage-failure.mjs
new file mode 100644
index 00000000000000..fc171db3ef4627
--- /dev/null
+++ b/test/test-runner/test-output-coverage-failure.mjs
@@ -0,0 +1,16 @@
+// Test that the output of test-runner/output/coverage_failure.js matches
+// test-runner/output/coverage_failure.snapshot
+import * as common from '../common/index.mjs';
+import * as fixtures from '../common/fixtures.mjs';
+import { spawnAndAssert, defaultTransform, ensureCwdIsProjectRoot } from '../common/assertSnapshot.js';
+
+if (!process.features.inspector) {
+  common.skip('inspector support required');
+}
+
+ensureCwdIsProjectRoot();
+await spawnAndAssert(
+  fixtures.path('test-runner/output/coverage_failure.js'),
+  defaultTransform,
+  { flags: ['--test-reporter=tap', '--test-coverage-exclude=!test/**'] },
+);
diff --git a/test/test-runner/test-output-coverage-short-filename.mjs b/test/test-runner/test-output-coverage-short-filename.mjs
new file mode 100644
index 00000000000000..04d673f530689f
--- /dev/null
+++ b/test/test-runner/test-output-coverage-short-filename.mjs
@@ -0,0 +1,19 @@
+// Test that the output of test-runner/output/coverage-short-filename.mjs matches
+// test-runner/output/coverage-short-filename.snapshot
+import * as common from '../common/index.mjs';
+import * as fixtures from '../common/fixtures.mjs';
+import { spawnAndAssert, defaultTransform, ensureCwdIsProjectRoot } from '../common/assertSnapshot.js';
+
+if (!process.features.inspector) {
+  common.skip('inspector support required');
+}
+
+ensureCwdIsProjectRoot();
+await spawnAndAssert(
+  fixtures.path('test-runner/output/coverage-short-filename.mjs'),
+  defaultTransform,
+  {
+    flags: ['--test-reporter=tap', '--test-coverage-exclude=../output/**'],
+    cwd: fixtures.path('test-runner/coverage-snap'),
+  },
+);
diff --git a/test/test-runner/test-output-coverage-width-100-uncovered-lines.mjs b/test/test-runner/test-output-coverage-width-100-uncovered-lines.mjs
new file mode 100644
index 00000000000000..dd7e1a9c455fbe
--- /dev/null
+++ b/test/test-runner/test-output-coverage-width-100-uncovered-lines.mjs
@@ -0,0 +1,16 @@
+// Test that the output of test-runner/output/coverage-width-100-uncovered-lines.mjs matches
+// test-runner/output/coverage-width-100-uncovered-lines.snapshot
+import * as common from '../common/index.mjs';
+import * as fixtures from '../common/fixtures.mjs';
+import { spawnAndAssert, defaultTransform, ensureCwdIsProjectRoot } from '../common/assertSnapshot.js';
+
+if (!process.features.inspector) {
+  common.skip('inspector support required');
+}
+
+ensureCwdIsProjectRoot();
+await spawnAndAssert(
+  fixtures.path('test-runner/output/coverage-width-100-uncovered-lines.mjs'),
+  defaultTransform,
+  { flags: ['--test-reporter=tap', '--test-coverage-exclude=!test/**'] },
+);
diff --git a/test/test-runner/test-output-coverage-width-100.mjs b/test/test-runner/test-output-coverage-width-100.mjs
new file mode 100644
index 00000000000000..515e1d4e02cac4
--- /dev/null
+++ b/test/test-runner/test-output-coverage-width-100.mjs
@@ -0,0 +1,16 @@
+// Test that the output of test-runner/output/coverage-width-100.mjs matches
+// test-runner/output/coverage-width-100.snapshot
+import * as common from '../common/index.mjs';
+import * as fixtures from '../common/fixtures.mjs';
+import { spawnAndAssert, defaultTransform, ensureCwdIsProjectRoot } from '../common/assertSnapshot.js';
+
+if (!process.features.inspector) {
+  common.skip('inspector support required');
+}
+
+ensureCwdIsProjectRoot();
+await spawnAndAssert(
+  fixtures.path('test-runner/output/coverage-width-100.mjs'),
+  defaultTransform,
+  { flags: ['--test-reporter=tap', '--test-coverage-exclude=!test/**'] },
+);
diff --git a/test/test-runner/test-output-coverage-width-150-uncovered-lines.mjs b/test/test-runner/test-output-coverage-width-150-uncovered-lines.mjs
new file mode 100644
index 00000000000000..a09aa303c8cc73
--- /dev/null
+++ b/test/test-runner/test-output-coverage-width-150-uncovered-lines.mjs
@@ -0,0 +1,16 @@
+// Test that the output of test-runner/output/coverage-width-150-uncovered-lines.mjs matches
+// test-runner/output/coverage-width-150-uncovered-lines.snapshot
+import * as common from '../common/index.mjs';
+import * as fixtures from '../common/fixtures.mjs';
+import { spawnAndAssert, defaultTransform, ensureCwdIsProjectRoot } from '../common/assertSnapshot.js';
+
+if (!process.features.inspector) {
+  common.skip('inspector support required');
+}
+
+ensureCwdIsProjectRoot();
+await spawnAndAssert(
+  fixtures.path('test-runner/output/coverage-width-150-uncovered-lines.mjs'),
+  defaultTransform,
+  { flags: ['--test-reporter=tap', '--test-coverage-exclude=!test/**'] },
+);
diff --git a/test/test-runner/test-output-coverage-width-150.mjs b/test/test-runner/test-output-coverage-width-150.mjs
new file mode 100644
index 00000000000000..077483de649f11
--- /dev/null
+++ b/test/test-runner/test-output-coverage-width-150.mjs
@@ -0,0 +1,16 @@
+// Test that the output of test-runner/output/coverage-width-150.mjs matches
+// test-runner/output/coverage-width-150.snapshot
+import * as common from '../common/index.mjs';
+import * as fixtures from '../common/fixtures.mjs';
+import { spawnAndAssert, defaultTransform, ensureCwdIsProjectRoot } from '../common/assertSnapshot.js';
+
+if (!process.features.inspector) {
+  common.skip('inspector support required');
+}
+
+ensureCwdIsProjectRoot();
+await spawnAndAssert(
+  fixtures.path('test-runner/output/coverage-width-150.mjs'),
+  defaultTransform,
+  { flags: ['--test-reporter=tap', '--test-coverage-exclude=!test/**'] },
+);
diff --git a/test/test-runner/test-output-coverage-width-40.mjs b/test/test-runner/test-output-coverage-width-40.mjs
new file mode 100644
index 00000000000000..2fa862ac48e65b
--- /dev/null
+++ b/test/test-runner/test-output-coverage-width-40.mjs
@@ -0,0 +1,16 @@
+// Test that the output of test-runner/output/coverage-width-40.mjs matches
+// test-runner/output/coverage-width-40.snapshot
+import * as common from '../common/index.mjs';
+import * as fixtures from '../common/fixtures.mjs';
+import { spawnAndAssert, defaultTransform, ensureCwdIsProjectRoot } from '../common/assertSnapshot.js';
+
+if (!process.features.inspector) {
+  common.skip('inspector support required');
+}
+
+ensureCwdIsProjectRoot();
+await spawnAndAssert(
+  fixtures.path('test-runner/output/coverage-width-40.mjs'),
+  defaultTransform,
+  { flags: ['--test-reporter=tap', '--test-coverage-exclude=!test/**'] },
+);
diff --git a/test/test-runner/test-output-coverage-width-80-color.mjs b/test/test-runner/test-output-coverage-width-80-color.mjs
new file mode 100644
index 00000000000000..97d11c2a48a584
--- /dev/null
+++ b/test/test-runner/test-output-coverage-width-80-color.mjs
@@ -0,0 +1,21 @@
+// Flags: --expose-internals
+// Test that the output of test-runner/output/coverage-width-80-color.mjs matches
+// test-runner/output/coverage-width-80-color.snapshot
+import * as common from '../common/index.mjs';
+import * as fixtures from '../common/fixtures.mjs';
+import { spawnAndAssert, specTransform, canColorize, ensureCwdIsProjectRoot } from '../common/assertSnapshot.js';
+
+if (!process.features.inspector) {
+  common.skip('inspector support required');
+}
+
+if (!canColorize()) {
+  common.skip('TTY colors not supported');
+}
+
+ensureCwdIsProjectRoot();
+await spawnAndAssert(
+  fixtures.path('test-runner/output/coverage-width-80-color.mjs'),
+  specTransform,
+  { flags: ['--test-coverage-exclude=!test/**'], tty: true },
+);
diff --git a/test/test-runner/test-output-coverage-width-80-uncovered-lines-color.mjs b/test/test-runner/test-output-coverage-width-80-uncovered-lines-color.mjs
new file mode 100644
index 00000000000000..1b2cb29620d6ff
--- /dev/null
+++ b/test/test-runner/test-output-coverage-width-80-uncovered-lines-color.mjs
@@ -0,0 +1,21 @@
+// Flags: --expose-internals
+// Test that the output of test-runner/output/coverage-width-80-uncovered-lines-color.mjs matches
+// test-runner/output/coverage-width-80-uncovered-lines-color.snapshot
+import * as common from '../common/index.mjs';
+import * as fixtures from '../common/fixtures.mjs';
+import { spawnAndAssert, specTransform, canColorize, ensureCwdIsProjectRoot } from '../common/assertSnapshot.js';
+
+if (!process.features.inspector) {
+  common.skip('inspector support required');
+}
+
+if (!canColorize()) {
+  common.skip('TTY colors not supported');
+}
+
+ensureCwdIsProjectRoot();
+await spawnAndAssert(
+  fixtures.path('test-runner/output/coverage-width-80-uncovered-lines-color.mjs'),
+  specTransform,
+  { flags: ['--test-coverage-exclude=!test/**'], tty: true },
+);
diff --git a/test/test-runner/test-output-coverage-width-80-uncovered-lines.mjs b/test/test-runner/test-output-coverage-width-80-uncovered-lines.mjs
new file mode 100644
index 00000000000000..39cc7d9403c96a
--- /dev/null
+++ b/test/test-runner/test-output-coverage-width-80-uncovered-lines.mjs
@@ -0,0 +1,16 @@
+// Test that the output of test-runner/output/coverage-width-80-uncovered-lines.mjs matches
+// test-runner/output/coverage-width-80-uncovered-lines.snapshot
+import * as common from '../common/index.mjs';
+import * as fixtures from '../common/fixtures.mjs';
+import { spawnAndAssert, defaultTransform, ensureCwdIsProjectRoot } from '../common/assertSnapshot.js';
+
+if (!process.features.inspector) {
+  common.skip('inspector support required');
+}
+
+ensureCwdIsProjectRoot();
+await spawnAndAssert(
+  fixtures.path('test-runner/output/coverage-width-80-uncovered-lines.mjs'),
+  defaultTransform,
+  { flags: ['--test-reporter=tap', '--test-coverage-exclude=!test/**'] },
+);
diff --git a/test/test-runner/test-output-coverage-width-80.mjs b/test/test-runner/test-output-coverage-width-80.mjs
new file mode 100644
index 00000000000000..dabf7644726b43
--- /dev/null
+++ b/test/test-runner/test-output-coverage-width-80.mjs
@@ -0,0 +1,16 @@
+// Test that the output of test-runner/output/coverage-width-80.mjs matches
+// test-runner/output/coverage-width-80.snapshot
+import * as common from '../common/index.mjs';
+import * as fixtures from '../common/fixtures.mjs';
+import { spawnAndAssert, defaultTransform, ensureCwdIsProjectRoot } from '../common/assertSnapshot.js';
+
+if (!process.features.inspector) {
+  common.skip('inspector support required');
+}
+
+ensureCwdIsProjectRoot();
+await spawnAndAssert(
+  fixtures.path('test-runner/output/coverage-width-80.mjs'),
+  defaultTransform,
+  { flags: ['--test-reporter=tap', '--test-coverage-exclude=!test/**'] },
+);
diff --git a/test/test-runner/test-output-coverage-width-infinity-uncovered-lines.mjs b/test/test-runner/test-output-coverage-width-infinity-uncovered-lines.mjs
new file mode 100644
index 00000000000000..b75bec1e04ec37
--- /dev/null
+++ b/test/test-runner/test-output-coverage-width-infinity-uncovered-lines.mjs
@@ -0,0 +1,16 @@
+// Test that the output of test-runner/output/coverage-width-infinity-uncovered-lines.mjs matches
+// test-runner/output/coverage-width-infinity-uncovered-lines.snapshot
+import * as common from '../common/index.mjs';
+import * as fixtures from '../common/fixtures.mjs';
+import { spawnAndAssert, defaultTransform, ensureCwdIsProjectRoot } from '../common/assertSnapshot.js';
+
+if (!process.features.inspector) {
+  common.skip('inspector support required');
+}
+
+ensureCwdIsProjectRoot();
+await spawnAndAssert(
+  fixtures.path('test-runner/output/coverage-width-infinity-uncovered-lines.mjs'),
+  defaultTransform,
+  { flags: ['--test-reporter=tap', '--test-coverage-exclude=!test/**'] },
+);
diff --git a/test/test-runner/test-output-coverage-width-infinity.mjs b/test/test-runner/test-output-coverage-width-infinity.mjs
new file mode 100644
index 00000000000000..f586ff9ab159d0
--- /dev/null
+++ b/test/test-runner/test-output-coverage-width-infinity.mjs
@@ -0,0 +1,16 @@
+// Test that the output of test-runner/output/coverage-width-infinity.mjs matches
+// test-runner/output/coverage-width-infinity.snapshot
+import * as common from '../common/index.mjs';
+import * as fixtures from '../common/fixtures.mjs';
+import { spawnAndAssert, defaultTransform, ensureCwdIsProjectRoot } from '../common/assertSnapshot.js';
+
+if (!process.features.inspector) {
+  common.skip('inspector support required');
+}
+
+ensureCwdIsProjectRoot();
+await spawnAndAssert(
+  fixtures.path('test-runner/output/coverage-width-infinity.mjs'),
+  defaultTransform,
+  { flags: ['--test-reporter=tap', '--test-coverage-exclude=!test/**'] },
+);
diff --git a/test/test-runner/test-output-coverage-with-mock.mjs b/test/test-runner/test-output-coverage-with-mock.mjs
new file mode 100644
index 00000000000000..f489451e184d6d
--- /dev/null
+++ b/test/test-runner/test-output-coverage-with-mock.mjs
@@ -0,0 +1,25 @@
+// Test that the output of test-runner/output/coverage-with-mock.mjs matches
+// test-runner/output/coverage-with-mock.snapshot
+import * as common from '../common/index.mjs';
+import * as fixtures from '../common/fixtures.mjs';
+import { spawnAndAssert, defaultTransform, ensureCwdIsProjectRoot } from '../common/assertSnapshot.js';
+
+if (!process.features.inspector) {
+  common.skip('inspector support required');
+}
+
+ensureCwdIsProjectRoot();
+await spawnAndAssert(
+  fixtures.path('test-runner/output/coverage-with-mock.mjs'),
+  defaultTransform,
+  {
+    flags: [
+      '--disable-warning=ExperimentalWarning',
+      '--test-reporter=tap',
+      '--experimental-transform-types',
+      '--experimental-test-module-mocks',
+      '--experimental-test-coverage',
+      '--test-coverage-exclude=!test/**',
+    ],
+  },
+);
diff --git a/test/test-runner/test-output-default-output.mjs b/test/test-runner/test-output-default-output.mjs
new file mode 100644
index 00000000000000..96ae139902755e
--- /dev/null
+++ b/test/test-runner/test-output-default-output.mjs
@@ -0,0 +1,11 @@
+// Test that the output of test-runner/output/default_output.js matches test-runner/output/default_output.snapshot
+import '../common/index.mjs';
+import * as fixtures from '../common/fixtures.mjs';
+import { spawnAndAssert, specTransform, ensureCwdIsProjectRoot } from '../common/assertSnapshot.js';
+
+ensureCwdIsProjectRoot();
+await spawnAndAssert(
+  fixtures.path('test-runner/output/default_output.js'),
+  specTransform,
+  { tty: true },
+);
diff --git a/test/test-runner/test-output-describe-it.mjs b/test/test-runner/test-output-describe-it.mjs
new file mode 100644
index 00000000000000..219951d5aec75e
--- /dev/null
+++ b/test/test-runner/test-output-describe-it.mjs
@@ -0,0 +1,11 @@
+// Test that the output of test-runner/output/describe_it.js matches test-runner/output/describe_it.snapshot
+import '../common/index.mjs';
+import * as fixtures from '../common/fixtures.mjs';
+import { spawnAndAssert, defaultTransform, ensureCwdIsProjectRoot } from '../common/assertSnapshot.js';
+
+ensureCwdIsProjectRoot();
+await spawnAndAssert(
+  fixtures.path('test-runner/output/describe_it.js'),
+  defaultTransform,
+  { flags: ['--test-reporter=tap'] },
+);
diff --git a/test/test-runner/test-output-describe-nested.mjs b/test/test-runner/test-output-describe-nested.mjs
new file mode 100644
index 00000000000000..661048527fa668
--- /dev/null
+++ b/test/test-runner/test-output-describe-nested.mjs
@@ -0,0 +1,11 @@
+// Test that the output of test-runner/output/describe_nested.js matches test-runner/output/describe_nested.snapshot
+import '../common/index.mjs';
+import * as fixtures from '../common/fixtures.mjs';
+import { spawnAndAssert, defaultTransform, ensureCwdIsProjectRoot } from '../common/assertSnapshot.js';
+
+ensureCwdIsProjectRoot();
+await spawnAndAssert(
+  fixtures.path('test-runner/output/describe_nested.js'),
+  defaultTransform,
+  { flags: ['--test-reporter=tap'] },
+);
diff --git a/test/test-runner/test-output-dot-output-custom-columns.mjs b/test/test-runner/test-output-dot-output-custom-columns.mjs
new file mode 100644
index 00000000000000..c8061e6ba27e85
--- /dev/null
+++ b/test/test-runner/test-output-dot-output-custom-columns.mjs
@@ -0,0 +1,12 @@
+// Test that the output of test-runner/output/dot_output_custom_columns.js matches
+// test-runner/output/dot_output_custom_columns.snapshot
+import '../common/index.mjs';
+import * as fixtures from '../common/fixtures.mjs';
+import { spawnAndAssert, specTransform, ensureCwdIsProjectRoot } from '../common/assertSnapshot.js';
+
+ensureCwdIsProjectRoot();
+await spawnAndAssert(
+  fixtures.path('test-runner/output/dot_output_custom_columns.js'),
+  specTransform,
+  { tty: true },
+);
diff --git a/test/test-runner/test-output-dot-reporter.mjs b/test/test-runner/test-output-dot-reporter.mjs
new file mode 100644
index 00000000000000..46312203bb46d7
--- /dev/null
+++ b/test/test-runner/test-output-dot-reporter.mjs
@@ -0,0 +1,10 @@
+// Test that the output of test-runner/output/dot_reporter.js matches test-runner/output/dot_reporter.snapshot
+import '../common/index.mjs';
+import * as fixtures from '../common/fixtures.mjs';
+import { spawnAndAssert, specTransform, ensureCwdIsProjectRoot } from '../common/assertSnapshot.js';
+
+ensureCwdIsProjectRoot();
+await spawnAndAssert(
+  fixtures.path('test-runner/output/dot_reporter.js'),
+  specTransform,
+);
diff --git a/test/test-runner/test-output-eval-dot.mjs b/test/test-runner/test-output-eval-dot.mjs
new file mode 100644
index 00000000000000..e31334ac52dd2b
--- /dev/null
+++ b/test/test-runner/test-output-eval-dot.mjs
@@ -0,0 +1,10 @@
+// Test that the output of test-runner/output/eval_dot.js matches test-runner/output/eval_dot.snapshot
+import '../common/index.mjs';
+import * as fixtures from '../common/fixtures.mjs';
+import { spawnAndAssert, specTransform, ensureCwdIsProjectRoot } from '../common/assertSnapshot.js';
+
+ensureCwdIsProjectRoot();
+await spawnAndAssert(
+  fixtures.path('test-runner/output/eval_dot.js'),
+  specTransform,
+);
diff --git a/test/test-runner/test-output-eval-spec.mjs b/test/test-runner/test-output-eval-spec.mjs
new file mode 100644
index 00000000000000..86d6677552bdc5
--- /dev/null
+++ b/test/test-runner/test-output-eval-spec.mjs
@@ -0,0 +1,10 @@
+// Test that the output of test-runner/output/eval_spec.js matches test-runner/output/eval_spec.snapshot
+import '../common/index.mjs';
+import * as fixtures from '../common/fixtures.mjs';
+import { spawnAndAssert, specTransform, ensureCwdIsProjectRoot } from '../common/assertSnapshot.js';
+
+ensureCwdIsProjectRoot();
+await spawnAndAssert(
+  fixtures.path('test-runner/output/eval_spec.js'),
+  specTransform,
+);
diff --git a/test/test-runner/test-output-eval-tap.mjs b/test/test-runner/test-output-eval-tap.mjs
new file mode 100644
index 00000000000000..a1902ec92878f4
--- /dev/null
+++ b/test/test-runner/test-output-eval-tap.mjs
@@ -0,0 +1,10 @@
+// Test that the output of test-runner/output/eval_tap.js matches test-runner/output/eval_tap.snapshot
+import '../common/index.mjs';
+import * as fixtures from '../common/fixtures.mjs';
+import { spawnAndAssert, defaultTransform, ensureCwdIsProjectRoot } from '../common/assertSnapshot.js';
+
+ensureCwdIsProjectRoot();
+await spawnAndAssert(
+  fixtures.path('test-runner/output/eval_tap.js'),
+  defaultTransform,
+);
diff --git a/test/test-runner/test-output-filtered-suite-delayed-build.mjs b/test/test-runner/test-output-filtered-suite-delayed-build.mjs
new file mode 100644
index 00000000000000..c4ec3f3b019731
--- /dev/null
+++ b/test/test-runner/test-output-filtered-suite-delayed-build.mjs
@@ -0,0 +1,12 @@
+// Test that the output of test-runner/output/filtered-suite-delayed-build.js matches
+// test-runner/output/filtered-suite-delayed-build.snapshot
+import '../common/index.mjs';
+import * as fixtures from '../common/fixtures.mjs';
+import { spawnAndAssert, defaultTransform, ensureCwdIsProjectRoot } from '../common/assertSnapshot.js';
+
+ensureCwdIsProjectRoot();
+await spawnAndAssert(
+  fixtures.path('test-runner/output/filtered-suite-delayed-build.js'),
+  defaultTransform,
+  { flags: ['--test-reporter=tap'] },
+);
diff --git a/test/test-runner/test-output-filtered-suite-order.mjs b/test/test-runner/test-output-filtered-suite-order.mjs
new file mode 100644
index 00000000000000..f29c4dcf62bc3f
--- /dev/null
+++ b/test/test-runner/test-output-filtered-suite-order.mjs
@@ -0,0 +1,12 @@
+// Test that the output of test-runner/output/filtered-suite-order.mjs matches
+// test-runner/output/filtered-suite-order.snapshot
+import '../common/index.mjs';
+import * as fixtures from '../common/fixtures.mjs';
+import { spawnAndAssert, defaultTransform, ensureCwdIsProjectRoot } from '../common/assertSnapshot.js';
+
+ensureCwdIsProjectRoot();
+await spawnAndAssert(
+  fixtures.path('test-runner/output/filtered-suite-order.mjs'),
+  defaultTransform,
+  { flags: ['--test-reporter=tap'] },
+);
diff --git a/test/test-runner/test-output-filtered-suite-throws.mjs b/test/test-runner/test-output-filtered-suite-throws.mjs
new file mode 100644
index 00000000000000..7976e3b63753de
--- /dev/null
+++ b/test/test-runner/test-output-filtered-suite-throws.mjs
@@ -0,0 +1,12 @@
+// Test that the output of test-runner/output/filtered-suite-throws.js matches
+// test-runner/output/filtered-suite-throws.snapshot
+import '../common/index.mjs';
+import * as fixtures from '../common/fixtures.mjs';
+import { spawnAndAssert, defaultTransform, ensureCwdIsProjectRoot } from '../common/assertSnapshot.js';
+
+ensureCwdIsProjectRoot();
+await spawnAndAssert(
+  fixtures.path('test-runner/output/filtered-suite-throws.js'),
+  defaultTransform,
+  { flags: ['--test-reporter=tap'] },
+);
diff --git a/test/test-runner/test-output-force-exit.mjs b/test/test-runner/test-output-force-exit.mjs
new file mode 100644
index 00000000000000..5138e3df57da31
--- /dev/null
+++ b/test/test-runner/test-output-force-exit.mjs
@@ -0,0 +1,10 @@
+// Test that the output of test-runner/output/force_exit.js matches test-runner/output/force_exit.snapshot
+import '../common/index.mjs';
+import * as fixtures from '../common/fixtures.mjs';
+import { spawnAndAssert, specTransform, ensureCwdIsProjectRoot } from '../common/assertSnapshot.js';
+
+ensureCwdIsProjectRoot();
+await spawnAndAssert(
+  fixtures.path('test-runner/output/force_exit.js'),
+  specTransform,
+);
diff --git a/test/test-runner/test-output-global-after-should-fail-the-test.mjs b/test/test-runner/test-output-global-after-should-fail-the-test.mjs
new file mode 100644
index 00000000000000..71179d7f15ebfc
--- /dev/null
+++ b/test/test-runner/test-output-global-after-should-fail-the-test.mjs
@@ -0,0 +1,12 @@
+// Test that the output of test-runner/output/global_after_should_fail_the_test.js matches
+// test-runner/output/global_after_should_fail_the_test.snapshot
+import '../common/index.mjs';
+import * as fixtures from '../common/fixtures.mjs';
+import { spawnAndAssert, defaultTransform, ensureCwdIsProjectRoot } from '../common/assertSnapshot.js';
+
+ensureCwdIsProjectRoot();
+await spawnAndAssert(
+  fixtures.path('test-runner/output/global_after_should_fail_the_test.js'),
+  defaultTransform,
+  { flags: ['--test-reporter=tap'] },
+);
diff --git a/test/test-runner/test-output-global-hooks-with-no-tests.mjs b/test/test-runner/test-output-global-hooks-with-no-tests.mjs
new file mode 100644
index 00000000000000..361948df103ba2
--- /dev/null
+++ b/test/test-runner/test-output-global-hooks-with-no-tests.mjs
@@ -0,0 +1,12 @@
+// Test that the output of test-runner/output/global-hooks-with-no-tests.js matches
+// test-runner/output/global-hooks-with-no-tests.snapshot
+import '../common/index.mjs';
+import * as fixtures from '../common/fixtures.mjs';
+import { spawnAndAssert, defaultTransform, ensureCwdIsProjectRoot } from '../common/assertSnapshot.js';
+
+ensureCwdIsProjectRoot();
+await spawnAndAssert(
+  fixtures.path('test-runner/output/global-hooks-with-no-tests.js'),
+  defaultTransform,
+  { flags: ['--test-reporter=tap'] },
+);
diff --git a/test/test-runner/test-output-hooks-spec-reporter.mjs b/test/test-runner/test-output-hooks-spec-reporter.mjs
new file mode 100644
index 00000000000000..cc46592fb74c6d
--- /dev/null
+++ b/test/test-runner/test-output-hooks-spec-reporter.mjs
@@ -0,0 +1,11 @@
+// Test that the output of test-runner/output/hooks_spec_reporter.js matches
+// test-runner/output/hooks_spec_reporter.snapshot
+import '../common/index.mjs';
+import * as fixtures from '../common/fixtures.mjs';
+import { spawnAndAssert, specTransform, ensureCwdIsProjectRoot } from '../common/assertSnapshot.js';
+
+ensureCwdIsProjectRoot();
+await spawnAndAssert(
+  fixtures.path('test-runner/output/hooks_spec_reporter.js'),
+  specTransform,
+);
diff --git a/test/test-runner/test-output-hooks-with-no-global-test.mjs b/test/test-runner/test-output-hooks-with-no-global-test.mjs
new file mode 100644
index 00000000000000..a0c0327e0f9ec2
--- /dev/null
+++ b/test/test-runner/test-output-hooks-with-no-global-test.mjs
@@ -0,0 +1,12 @@
+// Test that the output of test-runner/output/hooks-with-no-global-test.js matches
+// test-runner/output/hooks-with-no-global-test.snapshot
+import '../common/index.mjs';
+import * as fixtures from '../common/fixtures.mjs';
+import { spawnAndAssert, defaultTransform, ensureCwdIsProjectRoot } from '../common/assertSnapshot.js';
+
+ensureCwdIsProjectRoot();
+await spawnAndAssert(
+  fixtures.path('test-runner/output/hooks-with-no-global-test.js'),
+  defaultTransform,
+  { flags: ['--test-reporter=tap'] },
+);
diff --git a/test/test-runner/test-output-hooks.mjs b/test/test-runner/test-output-hooks.mjs
new file mode 100644
index 00000000000000..b1e1d655df6db8
--- /dev/null
+++ b/test/test-runner/test-output-hooks.mjs
@@ -0,0 +1,11 @@
+// Test that the output of test-runner/output/hooks.js matches test-runner/output/hooks.snapshot
+import '../common/index.mjs';
+import * as fixtures from '../common/fixtures.mjs';
+import { spawnAndAssert, defaultTransform, ensureCwdIsProjectRoot } from '../common/assertSnapshot.js';
+
+ensureCwdIsProjectRoot();
+await spawnAndAssert(
+  fixtures.path('test-runner/output/hooks.js'),
+  defaultTransform,
+  { flags: ['--test-reporter=tap'] },
+);
diff --git a/test/test-runner/test-output-junit-reporter.mjs b/test/test-runner/test-output-junit-reporter.mjs
new file mode 100644
index 00000000000000..ece14e09ac2e04
--- /dev/null
+++ b/test/test-runner/test-output-junit-reporter.mjs
@@ -0,0 +1,11 @@
+// Test that the output of test-runner/output/junit_reporter.js matches
+// test-runner/output/junit_reporter.snapshot
+import '../common/index.mjs';
+import * as fixtures from '../common/fixtures.mjs';
+import { spawnAndAssert, junitTransform, ensureCwdIsProjectRoot } from '../common/assertSnapshot.js';
+
+ensureCwdIsProjectRoot();
+await spawnAndAssert(
+  fixtures.path('test-runner/output/junit_reporter.js'),
+  junitTransform,
+);
diff --git a/test/test-runner/test-output-lcov-reporter.mjs b/test/test-runner/test-output-lcov-reporter.mjs
new file mode 100644
index 00000000000000..93aa38fff2bc66
--- /dev/null
+++ b/test/test-runner/test-output-lcov-reporter.mjs
@@ -0,0 +1,14 @@
+// Test that the output of test-runner/output/lcov_reporter.js matches test-runner/output/lcov_reporter.snapshot
+import * as common from '../common/index.mjs';
+import * as fixtures from '../common/fixtures.mjs';
+import { spawnAndAssert, lcovTransform, ensureCwdIsProjectRoot } from '../common/assertSnapshot.js';
+
+if (!process.features.inspector) {
+  common.skip('inspector support required');
+}
+
+ensureCwdIsProjectRoot();
+await spawnAndAssert(
+  fixtures.path('test-runner/output/lcov_reporter.js'),
+  lcovTransform,
+);
diff --git a/test/test-runner/test-output-name-and-skip-patterns.mjs b/test/test-runner/test-output-name-and-skip-patterns.mjs
new file mode 100644
index 00000000000000..875641a28435c4
--- /dev/null
+++ b/test/test-runner/test-output-name-and-skip-patterns.mjs
@@ -0,0 +1,12 @@
+// Test that the output of test-runner/output/name_and_skip_patterns.js matches
+// test-runner/output/name_and_skip_patterns.snapshot
+import '../common/index.mjs';
+import * as fixtures from '../common/fixtures.mjs';
+import { spawnAndAssert, defaultTransform, ensureCwdIsProjectRoot } from '../common/assertSnapshot.js';
+
+ensureCwdIsProjectRoot();
+await spawnAndAssert(
+  fixtures.path('test-runner/output/name_and_skip_patterns.js'),
+  defaultTransform,
+  { flags: ['--test-reporter=tap'] },
+);
diff --git a/test/test-runner/test-output-name-pattern-with-only.mjs b/test/test-runner/test-output-name-pattern-with-only.mjs
new file mode 100644
index 00000000000000..89b94f8a80a031
--- /dev/null
+++ b/test/test-runner/test-output-name-pattern-with-only.mjs
@@ -0,0 +1,12 @@
+// Test that the output of test-runner/output/name_pattern_with_only.js matches
+// test-runner/output/name_pattern_with_only.snapshot
+import '../common/index.mjs';
+import * as fixtures from '../common/fixtures.mjs';
+import { spawnAndAssert, defaultTransform, ensureCwdIsProjectRoot } from '../common/assertSnapshot.js';
+
+ensureCwdIsProjectRoot();
+await spawnAndAssert(
+  fixtures.path('test-runner/output/name_pattern_with_only.js'),
+  defaultTransform,
+  { flags: ['--test-reporter=tap'] },
+);
diff --git a/test/test-runner/test-output-name-pattern.mjs b/test/test-runner/test-output-name-pattern.mjs
new file mode 100644
index 00000000000000..efaef28ed0f0a9
--- /dev/null
+++ b/test/test-runner/test-output-name-pattern.mjs
@@ -0,0 +1,11 @@
+// Test that the output of test-runner/output/name_pattern.js matches test-runner/output/name_pattern.snapshot
+import '../common/index.mjs';
+import * as fixtures from '../common/fixtures.mjs';
+import { spawnAndAssert, defaultTransform, ensureCwdIsProjectRoot } from '../common/assertSnapshot.js';
+
+ensureCwdIsProjectRoot();
+await spawnAndAssert(
+  fixtures.path('test-runner/output/name_pattern.js'),
+  defaultTransform,
+  { flags: ['--test-reporter=tap'] },
+);
diff --git a/test/test-runner/test-output-no-refs.mjs b/test/test-runner/test-output-no-refs.mjs
new file mode 100644
index 00000000000000..5e2fbab53b2f54
--- /dev/null
+++ b/test/test-runner/test-output-no-refs.mjs
@@ -0,0 +1,11 @@
+// Test that the output of test-runner/output/no_refs.js matches test-runner/output/no_refs.snapshot
+import '../common/index.mjs';
+import * as fixtures from '../common/fixtures.mjs';
+import { spawnAndAssert, defaultTransform, ensureCwdIsProjectRoot } from '../common/assertSnapshot.js';
+
+ensureCwdIsProjectRoot();
+await spawnAndAssert(
+  fixtures.path('test-runner/output/no_refs.js'),
+  defaultTransform,
+  { flags: ['--test-reporter=tap'] },
+);
diff --git a/test/test-runner/test-output-no-tests.mjs b/test/test-runner/test-output-no-tests.mjs
new file mode 100644
index 00000000000000..0cff4003e7598c
--- /dev/null
+++ b/test/test-runner/test-output-no-tests.mjs
@@ -0,0 +1,11 @@
+// Test that the output of test-runner/output/no_tests.js matches test-runner/output/no_tests.snapshot
+import '../common/index.mjs';
+import * as fixtures from '../common/fixtures.mjs';
+import { spawnAndAssert, defaultTransform, ensureCwdIsProjectRoot } from '../common/assertSnapshot.js';
+
+ensureCwdIsProjectRoot();
+await spawnAndAssert(
+  fixtures.path('test-runner/output/no_tests.js'),
+  defaultTransform,
+  { flags: ['--test-reporter=tap'] },
+);
diff --git a/test/test-runner/test-output-non-tty-forced-color-output.mjs b/test/test-runner/test-output-non-tty-forced-color-output.mjs
new file mode 100644
index 00000000000000..d630c52e293a35
--- /dev/null
+++ b/test/test-runner/test-output-non-tty-forced-color-output.mjs
@@ -0,0 +1,11 @@
+// Test that the output of test-runner/output/non-tty-forced-color-output.js matches
+// test-runner/output/non-tty-forced-color-output.snapshot
+import '../common/index.mjs';
+import * as fixtures from '../common/fixtures.mjs';
+import { spawnAndAssert, specTransform, ensureCwdIsProjectRoot } from '../common/assertSnapshot.js';
+
+ensureCwdIsProjectRoot();
+await spawnAndAssert(
+  fixtures.path('test-runner/output/non-tty-forced-color-output.js'),
+  specTransform,
+);
diff --git a/test/test-runner/test-output-only-tests.mjs b/test/test-runner/test-output-only-tests.mjs
new file mode 100644
index 00000000000000..93a9097bec15dc
--- /dev/null
+++ b/test/test-runner/test-output-only-tests.mjs
@@ -0,0 +1,11 @@
+// Test that the output of test-runner/output/only_tests.js matches test-runner/output/only_tests.snapshot
+import '../common/index.mjs';
+import * as fixtures from '../common/fixtures.mjs';
+import { spawnAndAssert, defaultTransform, ensureCwdIsProjectRoot } from '../common/assertSnapshot.js';
+
+ensureCwdIsProjectRoot();
+await spawnAndAssert(
+  fixtures.path('test-runner/output/only_tests.js'),
+  defaultTransform,
+  { flags: ['--test-reporter=tap'] },
+);
diff --git a/test/test-runner/test-output-output-cli.mjs b/test/test-runner/test-output-output-cli.mjs
new file mode 100644
index 00000000000000..924b6212e2eae8
--- /dev/null
+++ b/test/test-runner/test-output-output-cli.mjs
@@ -0,0 +1,10 @@
+// Test that the output of test-runner/output/output_cli.js matches test-runner/output/output_cli.snapshot
+import '../common/index.mjs';
+import * as fixtures from '../common/fixtures.mjs';
+import { spawnAndAssert, defaultTransform, ensureCwdIsProjectRoot } from '../common/assertSnapshot.js';
+
+ensureCwdIsProjectRoot();
+await spawnAndAssert(
+  fixtures.path('test-runner/output/output_cli.js'),
+  defaultTransform,
+);
diff --git a/test/test-runner/test-output-output.mjs b/test/test-runner/test-output-output.mjs
new file mode 100644
index 00000000000000..1eb152324c4063
--- /dev/null
+++ b/test/test-runner/test-output-output.mjs
@@ -0,0 +1,11 @@
+// Test that the output of test-runner/output/output.js matches test-runner/output/output.snapshot
+import '../common/index.mjs';
+import * as fixtures from '../common/fixtures.mjs';
+import { spawnAndAssert, defaultTransform, ensureCwdIsProjectRoot } from '../common/assertSnapshot.js';
+
+ensureCwdIsProjectRoot();
+await spawnAndAssert(
+  fixtures.path('test-runner/output/output.js'),
+  defaultTransform,
+  { flags: ['--test-reporter=tap'] },
+);
diff --git a/test/test-runner/test-output-skip-each-hooks.mjs b/test/test-runner/test-output-skip-each-hooks.mjs
new file mode 100644
index 00000000000000..a5fb2fb613627b
--- /dev/null
+++ b/test/test-runner/test-output-skip-each-hooks.mjs
@@ -0,0 +1,11 @@
+// Test that the output of test-runner/output/skip-each-hooks.js matches
+// test-runner/output/skip-each-hooks.snapshot
+import '../common/index.mjs';
+import * as fixtures from '../common/fixtures.mjs';
+import { spawnAndAssert, specTransform, ensureCwdIsProjectRoot } from '../common/assertSnapshot.js';
+
+ensureCwdIsProjectRoot();
+await spawnAndAssert(
+  fixtures.path('test-runner/output/skip-each-hooks.js'),
+  specTransform,
+);
diff --git a/test/test-runner/test-output-skip-pattern.mjs b/test/test-runner/test-output-skip-pattern.mjs
new file mode 100644
index 00000000000000..852b48e7a2b6a1
--- /dev/null
+++ b/test/test-runner/test-output-skip-pattern.mjs
@@ -0,0 +1,11 @@
+// Test that the output of test-runner/output/skip_pattern.js matches test-runner/output/skip_pattern.snapshot
+import '../common/index.mjs';
+import * as fixtures from '../common/fixtures.mjs';
+import { spawnAndAssert, defaultTransform, ensureCwdIsProjectRoot } from '../common/assertSnapshot.js';
+
+ensureCwdIsProjectRoot();
+await spawnAndAssert(
+  fixtures.path('test-runner/output/skip_pattern.js'),
+  defaultTransform,
+  { flags: ['--test-reporter=tap'] },
+);
diff --git a/test/test-runner/test-output-source-mapped-locations.mjs b/test/test-runner/test-output-source-mapped-locations.mjs
new file mode 100644
index 00000000000000..a24bed052dc3ad
--- /dev/null
+++ b/test/test-runner/test-output-source-mapped-locations.mjs
@@ -0,0 +1,12 @@
+// Test that the output of test-runner/output/source_mapped_locations.mjs matches
+// test-runner/output/source_mapped_locations.snapshot
+import '../common/index.mjs';
+import * as fixtures from '../common/fixtures.mjs';
+import { spawnAndAssert, defaultTransform, ensureCwdIsProjectRoot } from '../common/assertSnapshot.js';
+
+ensureCwdIsProjectRoot();
+await spawnAndAssert(
+  fixtures.path('test-runner/output/source_mapped_locations.mjs'),
+  defaultTransform,
+  { flags: ['--test-reporter=tap'] },
+);
diff --git a/test/test-runner/test-output-spec-reporter-cli.mjs b/test/test-runner/test-output-spec-reporter-cli.mjs
new file mode 100644
index 00000000000000..5b44483601c3a5
--- /dev/null
+++ b/test/test-runner/test-output-spec-reporter-cli.mjs
@@ -0,0 +1,11 @@
+// Test that the output of test-runner/output/spec_reporter_cli.js matches
+// test-runner/output/spec_reporter_cli.snapshot
+import '../common/index.mjs';
+import * as fixtures from '../common/fixtures.mjs';
+import { spawnAndAssert, specTransform, ensureCwdIsProjectRoot } from '../common/assertSnapshot.js';
+
+ensureCwdIsProjectRoot();
+await spawnAndAssert(
+  fixtures.path('test-runner/output/spec_reporter_cli.js'),
+  specTransform,
+);
diff --git a/test/test-runner/test-output-spec-reporter-successful.mjs b/test/test-runner/test-output-spec-reporter-successful.mjs
new file mode 100644
index 00000000000000..0308d1e1f01b24
--- /dev/null
+++ b/test/test-runner/test-output-spec-reporter-successful.mjs
@@ -0,0 +1,11 @@
+// Test that the output of test-runner/output/spec_reporter_successful.js matches
+// test-runner/output/spec_reporter_successful.snapshot
+import '../common/index.mjs';
+import * as fixtures from '../common/fixtures.mjs';
+import { spawnAndAssert, specTransform, ensureCwdIsProjectRoot } from '../common/assertSnapshot.js';
+
+ensureCwdIsProjectRoot();
+await spawnAndAssert(
+  fixtures.path('test-runner/output/spec_reporter_successful.js'),
+  specTransform,
+);
diff --git a/test/test-runner/test-output-spec-reporter.mjs b/test/test-runner/test-output-spec-reporter.mjs
new file mode 100644
index 00000000000000..e7233b13da95d1
--- /dev/null
+++ b/test/test-runner/test-output-spec-reporter.mjs
@@ -0,0 +1,10 @@
+// Test that the output of test-runner/output/spec_reporter.js matches test-runner/output/spec_reporter.snapshot
+import '../common/index.mjs';
+import * as fixtures from '../common/fixtures.mjs';
+import { spawnAndAssert, specTransform, ensureCwdIsProjectRoot } from '../common/assertSnapshot.js';
+
+ensureCwdIsProjectRoot();
+await spawnAndAssert(
+  fixtures.path('test-runner/output/spec_reporter.js'),
+  specTransform,
+);
diff --git a/test/test-runner/test-output-suite-skip-hooks.mjs b/test/test-runner/test-output-suite-skip-hooks.mjs
new file mode 100644
index 00000000000000..183c4bb27c5d34
--- /dev/null
+++ b/test/test-runner/test-output-suite-skip-hooks.mjs
@@ -0,0 +1,11 @@
+// Test that the output of test-runner/output/suite-skip-hooks.js matches
+// test-runner/output/suite-skip-hooks.snapshot
+import '../common/index.mjs';
+import * as fixtures from '../common/fixtures.mjs';
+import { spawnAndAssert, specTransform, ensureCwdIsProjectRoot } from '../common/assertSnapshot.js';
+
+ensureCwdIsProjectRoot();
+await spawnAndAssert(
+  fixtures.path('test-runner/output/suite-skip-hooks.js'),
+  specTransform,
+);
diff --git a/test/test-runner/test-output-tap-escape.mjs b/test/test-runner/test-output-tap-escape.mjs
new file mode 100644
index 00000000000000..f0b4471d5158bb
--- /dev/null
+++ b/test/test-runner/test-output-tap-escape.mjs
@@ -0,0 +1,17 @@
+// Test that the output of test-runner/output/tap_escape.js matches test-runner/output/tap_escape.snapshot
+import '../common/index.mjs';
+import * as fixtures from '../common/fixtures.mjs';
+import {
+  spawnAndAssert,
+  transform,
+  replaceWindowsLineEndings,
+  replaceTestDuration,
+  ensureCwdIsProjectRoot,
+} from '../common/assertSnapshot.js';
+
+ensureCwdIsProjectRoot();
+await spawnAndAssert(
+  fixtures.path('test-runner/output/tap_escape.js'),
+  transform(replaceWindowsLineEndings, replaceTestDuration),
+  { flags: ['--test-reporter=tap'] },
+);
diff --git a/test/test-runner/test-output-test-diagnostic-warning-without-test-only-flag.mjs b/test/test-runner/test-output-test-diagnostic-warning-without-test-only-flag.mjs
new file mode 100644
index 00000000000000..b5f59df53b867d
--- /dev/null
+++ b/test/test-runner/test-output-test-diagnostic-warning-without-test-only-flag.mjs
@@ -0,0 +1,12 @@
+// Test that the output of test-runner/output/test-diagnostic-warning-without-test-only-flag.js matches
+// test-runner/output/test-diagnostic-warning-without-test-only-flag.snapshot
+import '../common/index.mjs';
+import * as fixtures from '../common/fixtures.mjs';
+import { spawnAndAssert, defaultTransform, ensureCwdIsProjectRoot } from '../common/assertSnapshot.js';
+
+ensureCwdIsProjectRoot();
+await spawnAndAssert(
+  fixtures.path('test-runner/output/test-diagnostic-warning-without-test-only-flag.js'),
+  defaultTransform,
+  { flags: ['--test', '--test-reporter=tap'] },
+);
diff --git a/test/test-runner/test-output-test-runner-plan-timeout.mjs b/test/test-runner/test-output-test-runner-plan-timeout.mjs
new file mode 100644
index 00000000000000..6771468d3b9fa9
--- /dev/null
+++ b/test/test-runner/test-output-test-runner-plan-timeout.mjs
@@ -0,0 +1,12 @@
+// Test that the output of test-runner/output/test-runner-plan-timeout.js matches
+// test-runner/output/test-runner-plan-timeout.snapshot
+import '../common/index.mjs';
+import * as fixtures from '../common/fixtures.mjs';
+import { spawnAndAssert, defaultTransform, ensureCwdIsProjectRoot } from '../common/assertSnapshot.js';
+
+ensureCwdIsProjectRoot();
+await spawnAndAssert(
+  fixtures.path('test-runner/output/test-runner-plan-timeout.js'),
+  defaultTransform,
+  { flags: ['--test-reporter=tap', '--test-force-exit'] },
+);
diff --git a/test/test-runner/test-output-test-runner-plan.mjs b/test/test-runner/test-output-test-runner-plan.mjs
new file mode 100644
index 00000000000000..a4533e9a1b1196
--- /dev/null
+++ b/test/test-runner/test-output-test-runner-plan.mjs
@@ -0,0 +1,12 @@
+// Test that the output of test-runner/output/test-runner-plan.js matches
+// test-runner/output/test-runner-plan.snapshot
+import '../common/index.mjs';
+import * as fixtures from '../common/fixtures.mjs';
+import { spawnAndAssert, defaultTransform, ensureCwdIsProjectRoot } from '../common/assertSnapshot.js';
+
+ensureCwdIsProjectRoot();
+await spawnAndAssert(
+  fixtures.path('test-runner/output/test-runner-plan.js'),
+  defaultTransform,
+  { flags: ['--test-reporter=tap'] },
+);
diff --git a/test/test-runner/test-output-test-runner-watch-spec.mjs b/test/test-runner/test-output-test-runner-watch-spec.mjs
new file mode 100644
index 00000000000000..c835b11527a8f0
--- /dev/null
+++ b/test/test-runner/test-output-test-runner-watch-spec.mjs
@@ -0,0 +1,11 @@
+// Test that the output of test-runner/output/test-runner-watch-spec.mjs matches
+// test-runner/output/test-runner-watch-spec.snapshot
+import '../common/index.mjs';
+import * as fixtures from '../common/fixtures.mjs';
+import { spawnAndAssert, specTransform, ensureCwdIsProjectRoot } from '../common/assertSnapshot.js';
+
+ensureCwdIsProjectRoot();
+await spawnAndAssert(
+  fixtures.path('test-runner/output/test-runner-watch-spec.mjs'),
+  specTransform,
+);
diff --git a/test/test-runner/test-output-test-timeout-flag-with-test.mjs b/test/test-runner/test-output-test-timeout-flag-with-test.mjs
new file mode 100644
index 00000000000000..f34db67d0be2c0
--- /dev/null
+++ b/test/test-runner/test-output-test-timeout-flag-with-test.mjs
@@ -0,0 +1,13 @@
+// Test that the output of test-runner/output/test-timeout-flag.js matches
+// test-runner/output/test-timeout-flag.snapshot with --test flag.
+// --test-timeout should work with or without --test flag.
+import '../common/index.mjs';
+import * as fixtures from '../common/fixtures.mjs';
+import { spawnAndAssert, defaultTransform, ensureCwdIsProjectRoot } from '../common/assertSnapshot.js';
+
+ensureCwdIsProjectRoot();
+await spawnAndAssert(
+  fixtures.path('test-runner/output/test-timeout-flag.js'),
+  defaultTransform,
+  { flags: ['--test-reporter=tap', '--test-timeout=100', '--test'] },
+);
diff --git a/test/test-runner/test-output-test-timeout-flag.mjs b/test/test-runner/test-output-test-timeout-flag.mjs
new file mode 100644
index 00000000000000..96ef6c47af00aa
--- /dev/null
+++ b/test/test-runner/test-output-test-timeout-flag.mjs
@@ -0,0 +1,12 @@
+// Test that the output of test-runner/output/test-timeout-flag.js matches
+// test-runner/output/test-timeout-flag.snapshot
+import '../common/index.mjs';
+import * as fixtures from '../common/fixtures.mjs';
+import { spawnAndAssert, defaultTransform, ensureCwdIsProjectRoot } from '../common/assertSnapshot.js';
+
+ensureCwdIsProjectRoot();
+await spawnAndAssert(
+  fixtures.path('test-runner/output/test-timeout-flag.js'),
+  defaultTransform,
+  { flags: ['--test-reporter=tap', '--test-timeout=100'] },
+);
diff --git a/test/test-runner/test-output-timeout-in-before-each.mjs b/test/test-runner/test-output-timeout-in-before-each.mjs
new file mode 100644
index 00000000000000..e0efd67155f556
--- /dev/null
+++ b/test/test-runner/test-output-timeout-in-before-each.mjs
@@ -0,0 +1,12 @@
+// Test that the output of test-runner/output/timeout_in_before_each_should_not_affect_further_tests.js matches
+// test-runner/output/timeout_in_before_each_should_not_affect_further_tests.snapshot
+import '../common/index.mjs';
+import * as fixtures from '../common/fixtures.mjs';
+import { spawnAndAssert, defaultTransform, ensureCwdIsProjectRoot } from '../common/assertSnapshot.js';
+
+ensureCwdIsProjectRoot();
+await spawnAndAssert(
+  fixtures.path('test-runner/output/timeout_in_before_each_should_not_affect_further_tests.js'),
+  defaultTransform,
+  { flags: ['--test-reporter=tap'] },
+);
diff --git a/test/test-runner/test-output-typescript-coverage.mjs b/test/test-runner/test-output-typescript-coverage.mjs
new file mode 100644
index 00000000000000..41aa97d194cc20
--- /dev/null
+++ b/test/test-runner/test-output-typescript-coverage.mjs
@@ -0,0 +1,25 @@
+// Test that the output of test-runner/output/typescript-coverage.mts matches
+// test-runner/output/typescript-coverage.snapshot
+import * as common from '../common/index.mjs';
+import * as fixtures from '../common/fixtures.mjs';
+import { spawnAndAssert, defaultTransform, ensureCwdIsProjectRoot } from '../common/assertSnapshot.js';
+
+if (!process.features.inspector) {
+  common.skip('inspector support required');
+}
+
+ensureCwdIsProjectRoot();
+await spawnAndAssert(
+  fixtures.path('test-runner/output/typescript-coverage.mts'),
+  defaultTransform,
+  {
+    flags: [
+      '--disable-warning=ExperimentalWarning',
+      '--test-reporter=tap',
+      '--experimental-transform-types',
+      '--experimental-test-module-mocks',
+      '--experimental-test-coverage',
+      '--test-coverage-exclude=!test/**',
+    ],
+  },
+);
diff --git a/test/test-runner/test-output-unfinished-suite-async-error.mjs b/test/test-runner/test-output-unfinished-suite-async-error.mjs
new file mode 100644
index 00000000000000..b6af0ae9a1170f
--- /dev/null
+++ b/test/test-runner/test-output-unfinished-suite-async-error.mjs
@@ -0,0 +1,12 @@
+// Test that the output of test-runner/output/unfinished-suite-async-error.js matches
+// test-runner/output/unfinished-suite-async-error.snapshot
+import '../common/index.mjs';
+import * as fixtures from '../common/fixtures.mjs';
+import { spawnAndAssert, defaultTransform, ensureCwdIsProjectRoot } from '../common/assertSnapshot.js';
+
+ensureCwdIsProjectRoot();
+await spawnAndAssert(
+  fixtures.path('test-runner/output/unfinished-suite-async-error.js'),
+  defaultTransform,
+  { flags: ['--test-reporter=tap'] },
+);
diff --git a/test/test-runner/test-runner.status b/test/test-runner/test-runner.status
new file mode 100644
index 00000000000000..65ae96eb9e3726
--- /dev/null
+++ b/test/test-runner/test-runner.status
@@ -0,0 +1,7 @@
+prefix test-runner
+
+# To mark a test as flaky, list the test name in the appropriate section
+# below, without ".js", followed by ": PASS,FLAKY". Example:
+# sample-test                        : PASS,FLAKY
+
+[true] # This section applies to all platforms
diff --git a/test/test-runner/testcfg.py b/test/test-runner/testcfg.py
new file mode 100644
index 00000000000000..fa53433d0dd1e5
--- /dev/null
+++ b/test/test-runner/testcfg.py
@@ -0,0 +1,6 @@
+import sys, os
+sys.path.append(os.path.join(os.path.dirname(__file__), '..'))
+import testpy
+
+def GetConfiguration(context, root):
+  return testpy.ParallelTestConfiguration(context, root, 'test-runner')