diff --git a/src/AsyncTestCase.php b/src/AsyncTestCase.php
index 4a352b3..56601c2 100644
--- a/src/AsyncTestCase.php
+++ b/src/AsyncTestCase.php
@@ -60,6 +60,16 @@ final public function runAsyncTest(...$args)
                 $invoked = true;
                 $exception = $error;
                 $returnValue = $value;
+
+                if ($exception) {
+                    Loop::unreference(Loop::delay(1000, function () use ($exception) {
+                        Loop::stop();
+                        $this->fail(
+                            'An exception was thrown from the test method or promise returned from test method failed),'
+                            . 'but the event loop continued to run; ' . $exception
+                        );
+                    }));
+                }
             });
         });
 
diff --git a/test/AsyncTestCaseTest.php b/test/AsyncTestCaseTest.php
index b03eefa..cf40068 100644
--- a/test/AsyncTestCaseTest.php
+++ b/test/AsyncTestCaseTest.php
@@ -158,4 +158,13 @@ public function testCreateCallback()
 
         $this->assertSame(2, $mock(1));
     }
+
+    public function testIssue8()
+    {
+        $this->expectException(AssertionFailedError::class);
+        $this->expectExceptionMessage('the event loop continued to run');
+
+        Loop::repeat(1000, static function () {});
+        throw new \Exception('Test exception');
+    }
 }