public function testReferrer() { $request = new Request(); $this->assertNull($request->referrer()); $request = new Request(); $this->assertEquals('MY_REF', $request->userAgent('MY_REF')); $request = new Request(); $server = ['HTTP_REFERER' => 'http://www.cubex.io']; $request->initialize([], [], [], [], [], $server); $this->assertEquals('http://www.cubex.io', $request->referrer()); }