chore: fix broken test in circus (#8009)

Author: SimenB

e2e/__tests__/detectOpenHandles.ts

@@ -22,7 +22,7 @@ try {
   }
 }
 
-function getTextAfterTest(stderr) {
+function getTextAfterTest(stderr: string) {
   return (stderr.split(/Ran all test suites(.*)\n/)[2] || '').trim();
 }
 

packages/jest-circus/src/utils.ts

@@ -157,89 +157,92 @@ function checkIsError(error: any): error is Error {
   return !!(error && (error as Error).message && (error as Error).stack);
 }
 
-export const callAsyncCircusFn = async (
+export const callAsyncCircusFn = (
   fn: AsyncFn,
   testContext: TestContext | undefined,
   {isHook, timeout}: {isHook?: boolean | null; timeout: number},
 ): Promise<any> => {
-  let timeoutID: NodeJS.Timeout | undefined;
+  let timeoutID: NodeJS.Timeout;
   let completed = false;
 
-  try {
-    return await new Promise((resolve, reject) => {
-      timeoutID = setTimeout(
-        () => reject(_makeTimeoutMessage(timeout, !!isHook)),
-        timeout,
-      );
-
-      // If this fn accepts `done` callback we return a promise that fulfills as
-      // soon as `done` called.
-      if (fn.length) {
-        const done = (reason?: Error | string): void => {
-          const errorAsErrorObject = checkIsError(reason)
-            ? reason
-            : new Error(`Failed: ${prettyFormat(reason, {maxDepth: 3})}`);
-
-          // Consider always throwing, regardless if `reason` is set or not
-          if (completed && reason) {
-            errorAsErrorObject.message =
-              'Caught error after test environment was torn down\n\n' +
-              errorAsErrorObject.message;
-
-            throw errorAsErrorObject;
-          }
+  return new Promise((resolve, reject) => {
+    timeoutID = setTimeout(
+      () => reject(_makeTimeoutMessage(timeout, !!isHook)),
+      timeout,
+    );
+
+    // If this fn accepts `done` callback we return a promise that fulfills as
+    // soon as `done` called.
+    if (fn.length) {
+      const done = (reason?: Error | string): void => {
+        const errorAsErrorObject = checkIsError(reason)
+          ? reason
+          : new Error(`Failed: ${prettyFormat(reason, {maxDepth: 3})}`);
+
+        // Consider always throwing, regardless if `reason` is set or not
+        if (completed && reason) {
+          errorAsErrorObject.message =
+            'Caught error after test environment was torn down\n\n' +
+            errorAsErrorObject.message;
+
+          throw errorAsErrorObject;
+        }
 
-          return reason ? reject(errorAsErrorObject) : resolve();
-        };
+        return reason ? reject(errorAsErrorObject) : resolve();
+      };
 
-        return fn.call(testContext, done);
-      }
+      return fn.call(testContext, done);
+    }
 
-      let returnedValue;
-      if (isGeneratorFn(fn)) {
-        returnedValue = co.wrap(fn).call({});
-      } else {
-        try {
-          returnedValue = fn.call(testContext);
-        } catch (error) {
-          return reject(error);
-        }
+    let returnedValue;
+    if (isGeneratorFn(fn)) {
+      returnedValue = co.wrap(fn).call({});
+    } else {
+      try {
+        returnedValue = fn.call(testContext);
+      } catch (error) {
+        return reject(error);
       }
+    }
 
-      // If it's a Promise, return it. Test for an object with a `then` function
-      // to support custom Promise implementations.
-      if (
-        typeof returnedValue === 'object' &&
-        returnedValue !== null &&
-        typeof returnedValue.then === 'function'
-      ) {
-        return returnedValue.then(resolve, reject);
-      }
+    // If it's a Promise, return it. Test for an object with a `then` function
+    // to support custom Promise implementations.
+    if (
+      typeof returnedValue === 'object' &&
+      returnedValue !== null &&
+      typeof returnedValue.then === 'function'
+    ) {
+      return returnedValue.then(resolve, reject);
+    }
 
-      if (!isHook && returnedValue !== void 0) {
-        return reject(
-          new Error(
-            `
+    if (!isHook && returnedValue !== void 0) {
+      return reject(
+        new Error(
+          `
       test functions can only return Promise or undefined.
       Returned value: ${String(returnedValue)}
       `,
-          ),
-        );
-      }
+        ),
+      );
+    }
 
-      // Otherwise this test is synchronous, and if it didn't throw it means
-      // it passed.
-      return resolve();
-    });
-  } finally {
-    completed = true;
-    // If timeout is not cleared/unrefed the node process won't exit until
-    // it's resolved.
-    if (timeoutID) {
+    // Otherwise this test is synchronous, and if it didn't throw it means
+    // it passed.
+    return resolve();
+  })
+    .then(() => {
+      completed = true;
+      // If timeout is not cleared/unrefed the node process won't exit until
+      // it's resolved.
       timeoutID.unref && timeoutID.unref();
       clearTimeout(timeoutID);
-    }
-  }
+    })
+    .catch(error => {
+      completed = true;
+      timeoutID.unref && timeoutID.unref();
+      clearTimeout(timeoutID);
+      throw error;
+    });
 };
 
 export const getTestDuration = (test: TestEntry): number | null => {