avoid false positive from try-catch in tests

packages/react-debug-tools/src/__tests__/ReactHooksInspection-test.js

@@ -276,6 +276,7 @@ describe('ReactHooksInspection', () => {
       },
     };
 
+    let didCatch = false;
     expect(() => {
       // mock the Error constructor to check the internal of the error instance
       try {
@@ -288,6 +289,7 @@ describe('ReactHooksInspection', () => {
           "Cannot read property 'useState' of null",
         );
       }
+      didCatch = true;
     }).toErrorDev(
       'Invalid hook call. Hooks can only be called inside of the body of a function component. This could happen for' +
         ' one of the following reasons:\n' +
@@ -297,6 +299,8 @@ describe('ReactHooksInspection', () => {
         'See https://reactjs.org/link/invalid-hook-call for tips about how to debug and fix this problem.',
       {withoutStack: true},
     );
+    // avoid false positive if no error was thrown at all
+    expect(didCatch).toBe(true);
 
     expect(getterCalls).toBe(1);
     expect(setterCalls).toHaveLength(2);

packages/react-debug-tools/src/__tests__/ReactHooksInspectionIntegration-test.js

@@ -921,6 +921,8 @@ describe('ReactHooksInspectionIntegration', () => {
     const renderer = ReactTestRenderer.create(<Foo />);
     const childFiber = renderer.root._currentFiber();
 
+    let didCatch = false;
+
     try {
       ReactDebugTools.inspectHooksOfFiber(childFiber, FakeDispatcherRef);
     } catch (error) {
@@ -934,7 +936,11 @@ describe('ReactHooksInspectionIntegration', () => {
           '3. You might have more than one copy of React in the same app\n' +
           'See https://reactjs.org/link/invalid-hook-call for tips about how to debug and fix this problem.',
       );
+      didCatch = true;
     }
+    // avoid false positive if no error was thrown at all
+    expect(didCatch).toBe(true);
+
     expect(getterCalls).toBe(1);
     expect(setterCalls).toHaveLength(2);
     expect(setterCalls[0]).not.toBe(initial);