Resolves #22

Author: seregazhuk

src/AssertsPromise.php

@@ -107,6 +107,8 @@ public function assertPromiseRejectsWith(PromiseInterface $promise, string $reas
             $this->assertInstanceOf(
                 $reasonExceptionClass, $reason, 'Failed asserting that promise rejects with a specified reason.'
             );
+
+            return;
         }
 
         $this->fail('Failed asserting that promise rejects. Promise was fulfilled.');

tests/PromiseRejectsWithTest.php

@@ -13,8 +13,8 @@ public function promise_rejects_with_a_specified_reason(): void
     {
         try {
             $deferred = new Deferred();
-            $deferred->reject(new \LogicException());
-            $this->assertPromiseRejectsWith($deferred->promise(), \InvalidArgumentException::class);
+            $deferred->reject(new \InvalidArgumentException());
+            $this->assertPromiseRejectsWith($deferred->promise(), \LogicException::class);
         } catch (Exception $exception) {
             $this->assertMatchesRegularExpression('/Failed asserting that promise rejects with a specified reason/', $exception->getMessage());
             $this->assertMatchesRegularExpression(