PhlyTest\Http\MessageTraitTest::testHasHeaderReturnsTrueIfHeaderIsPresent PHP Метод

    public function testHasHeaderReturnsTrueIfHeaderIsPresent()
    {
        $message = $this->message->withHeader('X-Foo', 'Foo');
        $this->assertNotSame($this->message, $message);
        $this->assertTrue($message->hasHeader('X-Foo'));
    }