test: add fixture trim option

Author: codebytere

test/common/fixtures.js

@@ -15,8 +15,13 @@ function readFixtureSync(args, enc) {
   return fs.readFileSync(fixturesPath(args), enc);
 }
 
-function readFixtureKey(name, enc) {
-  return fs.readFileSync(fixturesPath('keys', name), enc);
+function readFixtureKey(name, enc, trim) {
+  let result = fs.readFileSync(fixturesPath('keys', name), enc);
+  if (trim) {
+    result = Buffer.from(result.toString().trim(), 'utf8');
+  }
+
+  return result;
 }
 
 function readFixtureKeys(enc, ...names) {

test/parallel/test-crypto-certificate.js

@@ -30,9 +30,9 @@ const { Certificate } = crypto;
 const fixtures = require('../common/fixtures');
 
 // Test Certificates
-const spkacValid = fixtures.readKey('rsa_spkac.spkac');
+const spkacValid = fixtures.readKey('rsa_spkac.spkac', null, true);
 const spkacChallenge = 'this-is-a-challenge';
-const spkacFail = fixtures.readKey('rsa_spkac_invalid.spkac');
+const spkacFail = fixtures.readKey('rsa_spkac_invalid.spkac', null, true);
 const spkacPublicPem = fixtures.readKey('rsa_public.pem');
 
 function copyArrayBuffer(buf) {