SessionCacheContextTest.php

<?php

namespace Drupal\Tests\Core\Cache\Context;

use Drupal\Core\Cache\Context\SessionCacheContext;
use Drupal\Tests\UnitTestCase;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpFoundation\RequestStack;

/**
 * @coversDefaultClass \Drupal\Core\Cache\Context\SessionCacheContext
 * @group Cache
 */
class SessionCacheContextTest extends UnitTestCase {
    
    /**
     * The request.
     *
     * @var \Symfony\Component\HttpFoundation\Request
     */
    protected $request;
    
    /**
     * The request stack.
     *
     * @var \Symfony\Component\HttpFoundation\RequestStack
     */
    protected $requestStack;
    
    /**
     * The session object.
     *
     * @var \Symfony\Component\HttpFoundation\Session\SessionInterface|\PHPUnit\Framework\MockObject\MockObject
     */
    protected $session;
    public function setUp() {
        $this->request = new Request();
        $this->requestStack = new RequestStack();
        $this->requestStack
            ->push($this->request);
        $this->session = $this->getMockBuilder('\\Symfony\\Component\\HttpFoundation\\Session\\SessionInterface')
            ->getMock();
    }
    
    /**
     * @covers ::getContext
     */
    public function testSameContextForSameSession() {
        $this->request
            ->setSession($this->session);
        $cache_context = new SessionCacheContext($this->requestStack);
        $session_id = 'aSebeZ52bbM6SvADurQP89SFnEpxY6j8';
        $this->session
            ->expects($this->exactly(2))
            ->method('getId')
            ->will($this->returnValue($session_id));
        $context1 = $cache_context->getContext();
        $context2 = $cache_context->getContext();
        $this->assertSame($context1, $context2);
        $this->assertStringNotContainsString($session_id, $context1, 'Session ID not contained in cache context');
    }
    
    /**
     * @covers ::getContext
     */
    public function testDifferentContextForDifferentSession() {
        $this->request
            ->setSession($this->session);
        $cache_context = new SessionCacheContext($this->requestStack);
        $session1_id = 'pjH_8aSoofyCDQiuVYXJcbfyr-CPtkUY';
        $this->session
            ->expects($this->at(0))
            ->method('getId')
            ->will($this->returnValue($session1_id));
        $session2_id = 'aSebeZ52bbM6SvADurQP89SFnEpxY6j8';
        $this->session
            ->expects($this->at(1))
            ->method('getId')
            ->will($this->returnValue($session2_id));
        $context1 = $cache_context->getContext();
        $context2 = $cache_context->getContext();
        $this->assertNotEquals($context1, $context2);
        $this->assertStringNotContainsString($session1_id, $context1, 'Session ID not contained in cache context');
        $this->assertStringNotContainsString($session2_id, $context2, 'Session ID not contained in cache context');
    }
    
    /**
     * @covers ::getContext
     */
    public function testContextWithoutSessionInRequest() {
        $cache_context = new SessionCacheContext($this->requestStack);
        $this->assertSame('none', $cache_context->getContext());
    }

}