silverstripe-framework/tests/control/PjaxResponseNegotiatorTest.php

<?php
class PjaxResponseNegotiatorTest extends SapphireTest {

	public function testDefaultCallbacks() {
		$negotiator = new PjaxResponseNegotiator(array(
			'default' => function() {return 'default response';},
		));
		$request = new SS_HTTPRequest('GET', '/'); // not setting pjax header
		$response = $negotiator->respond($request);
		$this->assertEquals('default response', $response->getBody());
	}

	public function testSelectsFragmentByHeader() {
		$negotiator = new PjaxResponseNegotiator(array(
			'default' => function() {return 'default response';},
			'myfragment' => function() {return 'myfragment response';},
		));
		$request = new SS_HTTPRequest('GET', '/');
		$request->addHeader('X-Pjax', 'myfragment');
		$response = $negotiator->respond($request);
		$this->assertEquals('{"myfragment":"myfragment response"}', $response->getBody());
	}

	public function testMultipleFragments() {
		$negotiator = new PjaxResponseNegotiator(array(
			'default' => function() {return 'default response';},
			'myfragment' => function() {return 'myfragment response';},
			'otherfragment' => function() {return 'otherfragment response';},
		));
		$request = new SS_HTTPRequest('GET', '/');
		$request->addHeader('X-Pjax', 'myfragment,otherfragment');
		$request->addHeader('Accept', 'application/json');
		$response = $negotiator->respond($request);
		$json = json_decode( $response->getBody());
		$this->assertObjectHasAttribute('myfragment', $json);
		$this->assertEquals('myfragment response', $json->myfragment);
		$this->assertObjectHasAttribute('otherfragment', $json);
		$this->assertEquals('otherfragment response', $json->otherfragment);
	}

	public function testFragmentsOverride() {
		$negotiator = new PjaxResponseNegotiator(array(
			'alpha' => function() {return 'alpha response';},
			'beta' => function() {return 'beta response';}
		));

		$request = new SS_HTTPRequest('GET', '/');
		$request->addHeader('X-Pjax', 'alpha');
		$request->addHeader('Accept', 'application/json');

		$response = $negotiator->setFragmentOverride(array('beta'))->respond($request);
		$json = json_decode( $response->getBody());
		$this->assertFalse(isset($json->alpha));
		$this->assertObjectHasAttribute('beta', $json);
	}

}