Add failing tests

Added tests for date and text inputs for both the value and defaultValue
props. The mock object used for those props approximates the behavior
of Temporal.PlainDate whose `valueOf` method will throw.

Author: justingrant

packages/react-dom/src/__tests__/ReactDOMInput-test.js

@@ -544,6 +544,78 @@ describe('ReactDOMInput', () => {
     expect(node.value).toBe('foobar');
   });
 
+  it('should not throw for date inputs even if `defaultValue` is an object where valueOf() throws', () => {
+    class Foo {
+      valueOf() {
+        // Throwing here is the behavior of ECMAScript "Temporal" date/time API.
+        // See https://tc39.es/proposal-temporal/docs/plaindate.html#valueOf
+        throw new Error();
+      }
+      toString() {
+        return '2020-01-01';
+      }
+    }
+    const input = ReactDOM.render(
+      <input defaultValue={new Foo()} type="date" />,
+      container,
+    );
+    expect(input.value).toBe('2020-01-01');
+  });
+
+  it('should not throw for text inputs even if `defaultValue` is an object where valueOf() throws', () => {
+    class Foo {
+      valueOf() {
+        // Throwing here is the behavior of ECMAScript "Temporal" date/time API.
+        // See https://tc39.es/proposal-temporal/docs/plaindate.html#valueOf
+        throw new Error();
+      }
+      toString() {
+        return '2020-01-01';
+      }
+    }
+    const input = ReactDOM.render(
+      <input defaultValue={new Foo()} type="text" />,
+      container,
+    );
+    expect(input.value).toBe('2020-01-01');
+  });
+
+  it('should not throw for date inputs even if `value` is an object where valueOf() throws', () => {
+    class Foo {
+      valueOf() {
+        // Throwing here is the behavior of ECMAScript "Temporal" date/time API.
+        // See https://tc39.es/proposal-temporal/docs/plaindate.html#valueOf
+        throw new Error();
+      }
+      toString() {
+        return '2020-01-01';
+      }
+    }
+    const input = ReactDOM.render(
+      <input value={new Foo()} type="date" readOnly={true} />,
+      container,
+    );
+    expect(input.value).toBe('2020-01-01');
+  });
+
+  it('should not throw for date inputs even if `value` is an object where valueOf() throws', () => {
+    class Foo {
+      valueOf() {
+        // Throwing here is the behavior of ECMAScript "Temporal" date/time API.
+        // See https://tc39.es/proposal-temporal/docs/plaindate.html#valueOf
+        throw new Error();
+      }
+      toString() {
+        return '2020-01-01';
+      }
+    }
+    const input = ReactDOM.render(
+      <input value={new Foo()} type="text" readOnly={true} />,
+      container,
+    );
+    expect(input.value).toBe('2020-01-01');
+  });
+
   it('should display `value` of number 0', () => {
     const stub = <input type="text" value={0} onChange={emptyFunction} />;
     const node = ReactDOM.render(stub, container);