Add ::assertNothingDispatched() to events fake

src/Illuminate/Support/Testing/Fakes/EventFake.php

@@ -106,6 +106,21 @@ public function assertNotDispatched($event, $callback = null)
         );
     }
 
+    /**
+     * Assert if no event was dispatched.
+     *
+     * @return void
+     */
+    public function assertNothingDispatched()
+    {
+        $count = count(Arr::flatten($this->events));
+
+        PHPUnit::assertSame(
+            0, $count,
+            "Unexpected {$count} events were dispatched."
+        );
+    }
+
     /**
      * Get all of the events matching a truth-test callback.
      *

tests/Support/SupportTestingEventFakeTest.php

@@ -118,6 +118,21 @@ function ($event, $payload) {
         $fake->assertDispatched('Bar');
         $fake->assertNotDispatched('Baz');
     }
+
+    public function testAssertNothingDispatched()
+    {
+        $this->fake->assertNothingDispatched();
+
+        $this->fake->dispatch(EventStub::class);
+        $this->fake->dispatch(EventStub::class);
+
+        try {
+            $this->fake->assertNothingDispatched();
+            $this->fail();
+        } catch (ExpectationFailedException $e) {
+            $this->assertThat($e, new ExceptionMessage('Unexpected 2 events were dispatched.'));
+        }
+    }
 }
 
 class EventStub