--- /dev/null
+<?php
+
+namespace Drupal\Tests\block\Functional;
+
+use Drupal\Core\Cache\Cache;
+use Drupal\Tests\BrowserTestBase;
+
+/**
+ * Tests block caching.
+ *
+ * @group block
+ */
+class BlockCacheTest extends BrowserTestBase {
+
+ /**
+ * Modules to install.
+ *
+ * @var array
+ */
+ public static $modules = ['block', 'block_test', 'test_page_test'];
+
+ /**
+ * A user with permission to create and edit books and to administer blocks.
+ *
+ * @var object
+ */
+ protected $adminUser;
+
+ /**
+ * An authenticated user to test block caching.
+ *
+ * @var object
+ */
+ protected $normalUser;
+
+ /**
+ * Another authenticated user to test block caching.
+ *
+ * @var object
+ */
+ protected $normalUserAlt;
+
+ /**
+ * The block used by this test.
+ *
+ * @var \Drupal\block\BlockInterface
+ */
+ protected $block;
+
+ protected function setUp() {
+ parent::setUp();
+
+ // Create an admin user, log in and enable test blocks.
+ $this->adminUser = $this->drupalCreateUser(['administer blocks', 'access administration pages']);
+ $this->drupalLogin($this->adminUser);
+
+ // Create additional users to test caching modes.
+ $this->normalUser = $this->drupalCreateUser();
+ $this->normalUserAlt = $this->drupalCreateUser();
+ // Sync the roles, since drupalCreateUser() creates separate roles for
+ // the same permission sets.
+ $this->normalUserAlt->roles = $this->normalUser->getRoles();
+ $this->normalUserAlt->save();
+
+ // Enable our test block.
+ $this->block = $this->drupalPlaceBlock('test_cache');
+ }
+
+ /**
+ * Test "user.roles" cache context.
+ */
+ public function testCachePerRole() {
+ \Drupal::state()->set('block_test.cache_contexts', ['user.roles']);
+
+ // Enable our test block. Set some content for it to display.
+ $current_content = $this->randomMachineName();
+ \Drupal::state()->set('block_test.content', $current_content);
+ $this->drupalLogin($this->normalUser);
+ $this->drupalGet('');
+ $this->assertText($current_content, 'Block content displays.');
+
+ // Change the content, but the cached copy should still be served.
+ $old_content = $current_content;
+ $current_content = $this->randomMachineName();
+ \Drupal::state()->set('block_test.content', $current_content);
+ $this->drupalGet('');
+ $this->assertText($old_content, 'Block is served from the cache.');
+
+ // Clear the cache and verify that the stale data is no longer there.
+ Cache::invalidateTags(['block_view']);
+ $this->drupalGet('');
+ $this->assertNoText($old_content, 'Block cache clear removes stale cache data.');
+ $this->assertText($current_content, 'Fresh block content is displayed after clearing the cache.');
+
+ // Test whether the cached data is served for the correct users.
+ $old_content = $current_content;
+ $current_content = $this->randomMachineName();
+ \Drupal::state()->set('block_test.content', $current_content);
+ $this->drupalLogout();
+ $this->drupalGet('');
+ $this->assertNoText($old_content, 'Anonymous user does not see content cached per-role for normal user.');
+
+ $this->drupalLogin($this->normalUserAlt);
+ $this->drupalGet('');
+ $this->assertText($old_content, 'User with the same roles sees per-role cached content.');
+
+ $this->drupalLogin($this->adminUser);
+ $this->drupalGet('');
+ $this->assertNoText($old_content, 'Admin user does not see content cached per-role for normal user.');
+
+ $this->drupalLogin($this->normalUser);
+ $this->drupalGet('');
+ $this->assertText($old_content, 'Block is served from the per-role cache.');
+ }
+
+ /**
+ * Test a cacheable block without any additional cache context.
+ */
+ public function testCachePermissions() {
+ // user.permissions is a required context, so a user with different
+ // permissions will see a different version of the block.
+ \Drupal::state()->set('block_test.cache_contexts', []);
+
+ $current_content = $this->randomMachineName();
+ \Drupal::state()->set('block_test.content', $current_content);
+
+ $this->drupalGet('');
+ $this->assertText($current_content, 'Block content displays.');
+
+ $old_content = $current_content;
+ $current_content = $this->randomMachineName();
+ \Drupal::state()->set('block_test.content', $current_content);
+
+ $this->drupalGet('user');
+ $this->assertText($old_content, 'Block content served from cache.');
+
+ $this->drupalLogout();
+ $this->drupalGet('user');
+ $this->assertText($current_content, 'Block content not served from cache.');
+ }
+
+ /**
+ * Test non-cacheable block.
+ */
+ public function testNoCache() {
+ \Drupal::state()->set('block_test.cache_max_age', 0);
+
+ $current_content = $this->randomMachineName();
+ \Drupal::state()->set('block_test.content', $current_content);
+
+ // If max_age = 0 has no effect, the next request would be cached.
+ $this->drupalGet('');
+ $this->assertText($current_content, 'Block content displays.');
+
+ // A cached copy should not be served.
+ $current_content = $this->randomMachineName();
+ \Drupal::state()->set('block_test.content', $current_content);
+ $this->drupalGet('');
+ $this->assertText($current_content, 'Maximum age of zero prevents blocks from being cached.');
+ }
+
+ /**
+ * Test "user" cache context.
+ */
+ public function testCachePerUser() {
+ \Drupal::state()->set('block_test.cache_contexts', ['user']);
+
+ $current_content = $this->randomMachineName();
+ \Drupal::state()->set('block_test.content', $current_content);
+ $this->drupalLogin($this->normalUser);
+
+ $this->drupalGet('');
+ $this->assertText($current_content, 'Block content displays.');
+
+ $old_content = $current_content;
+ $current_content = $this->randomMachineName();
+ \Drupal::state()->set('block_test.content', $current_content);
+
+ $this->drupalGet('');
+ $this->assertText($old_content, 'Block is served from per-user cache.');
+
+ $this->drupalLogin($this->normalUserAlt);
+ $this->drupalGet('');
+ $this->assertText($current_content, 'Per-user block cache is not served for other users.');
+
+ $this->drupalLogin($this->normalUser);
+ $this->drupalGet('');
+ $this->assertText($old_content, 'Per-user block cache is persistent.');
+ }
+
+ /**
+ * Test "url" cache context.
+ */
+ public function testCachePerPage() {
+ \Drupal::state()->set('block_test.cache_contexts', ['url']);
+
+ $current_content = $this->randomMachineName();
+ \Drupal::state()->set('block_test.content', $current_content);
+
+ $this->drupalGet('test-page');
+ $this->assertText($current_content, 'Block content displays on the test page.');
+
+ $old_content = $current_content;
+ $current_content = $this->randomMachineName();
+ \Drupal::state()->set('block_test.content', $current_content);
+
+ $this->drupalGet('user');
+ $this->assertResponse(200);
+ $this->assertNoText($old_content, 'Block content cached for the test page does not show up for the user page.');
+ $this->drupalGet('test-page');
+ $this->assertResponse(200);
+ $this->assertText($old_content, 'Block content cached for the test page.');
+ }
+
+}