Fail tests if unasserted console calls contain undefined (#34191)

packages/internal-test-utils/__tests__/ReactInternalTestUtils-test.js

@@ -2169,6 +2169,29 @@ describe('ReactInternalTestUtils console assertions', () => {
         + Bye      in div (at **)"
       `);
     });
+
+    // @gate __DEV__
+    it('fails if last received error containing "undefined" is not included', () => {
+      const message = expectToThrowFailure(() => {
+        console.error('Hi');
+        console.error(
+          "TypeError: Cannot read properties of undefined (reading 'stack')\n" +
+            '    in Foo (at **)'
+        );
+        assertConsoleErrorDev([['Hi', {withoutStack: true}]]);
+      });
+      expect(message).toMatchInlineSnapshot(`
+        "assertConsoleErrorDev(expected)
+
+        Unexpected error(s) recorded.
+
+        - Expected errors
+        + Received errors
+
+          Hi
+        + TypeError: Cannot read properties of undefined (reading 'stack')     in Foo (at **)"
+      `);
+    });
     // @gate __DEV__
     it('fails if only error does not contain a stack', () => {
       const message = expectToThrowFailure(() => {

packages/internal-test-utils/consoleMock.js

@@ -382,8 +382,9 @@ export function createLogAssertion(
 
         // Main logic to check if log is expected, with the component stack.
         if (
-          normalizedMessage === expectedMessage ||
-          normalizedMessage.includes(expectedMessage)
+          typeof expectedMessage === 'string' &&
+          (normalizedMessage === expectedMessage ||
+            normalizedMessage.includes(expectedMessage))
         ) {
           if (isLikelyAComponentStack(normalizedMessage)) {
             if (expectedWithoutStack === true) {