Symfony\Component\HttpFoundation\Tests\RequestTest::testGetHost PHP Method

    public function testGetHost()
    {
        $request = new Request();

        $request->initialize(array('foo' => 'bar'));
        $this->assertEquals('', $request->getHost(), '->getHost() return empty string if not initialized');

        $request->initialize(array(), array(), array(), array(), array(), array('HTTP_HOST' => 'www.example.com'));
        $this->assertEquals('www.example.com', $request->getHost(), '->getHost() from Host Header');

        // Host header with port number
        $request->initialize(array(), array(), array(), array(), array(), array('HTTP_HOST' => 'www.example.com:8080'));
        $this->assertEquals('www.example.com', $request->getHost(), '->getHost() from Host Header with port number');

        // Server values
        $request->initialize(array(), array(), array(), array(), array(), array('SERVER_NAME' => 'www.example.com'));
        $this->assertEquals('www.example.com', $request->getHost(), '->getHost() from server name');

        $request->initialize(array(), array(), array(), array(), array(), array('SERVER_NAME' => 'www.example.com', 'HTTP_HOST' => 'www.host.com'));
        $this->assertEquals('www.host.com', $request->getHost(), '->getHost() value from Host header has priority over SERVER_NAME ');
    }