feat: adds fails

src/PendingCalls/TestCall.php

@@ -19,6 +19,7 @@ use Pest\Support\NullClosure;
 use Pest\Support\Str;
 use Pest\TestSuite;
 use PHPUnit\Framework\TestCase;
+use PHPUnit\Framework\AssertionFailedError;
 
 /**
  * @internal
@@ -57,6 +58,14 @@ final class TestCall
         $this->testSuite->beforeEach->get($this->filename)[0]($this);
     }
 
+    /**
+     * Asserts that the test fails with the given message.
+     */
+    public function fails(?string $message = null): self
+    {
+        return $this->throws(AssertionFailedError::class, $message);
+    }
+
     /**
      * Asserts that the test throws the given `$exceptionClass` when called.
      */