function CacheExampleTest::testCacheExampleBasic

Test that our caches function.

Does the following:

• Load cache example page and test if displaying uncached version.
• Reload once again and test if displaying cached version.
• Find reload link and click on it.
• Clear cache at the end and test if displaying uncached version again.

File

modules/cache_example/tests/src/Functional/CacheExampleTest.php, line 67

Class

CacheExampleTest

Tests for the cache_example module.

Namespace

Code

public function testCacheExampleBasic() {
    $assert = $this->assertSession();
    // We need administrative privileges to clear the cache.
    $admin_user = $this->drupalCreateUser([
        'administer site configuration',
    ]);
    $this->drupalLogin($admin_user);
    // Get initial page cache example page, first time accessed,
    // and assert uncached output.
    $this->drupalGet('examples/cache-example');
    $assert->pageTextContains('Source: actual file search');
    // Reload the page; the number should be cached.
    $this->drupalGet('examples/cache-example');
    $assert->pageTextContains('Source: cached');
    // Now push the button to remove the count.
    $this->drupalGet('examples/cache-example');
    $this->submitForm([], 'Explicitly remove cached file count');
    $assert->pageTextContains('Source: actual file search');
    // Create a cached item. First make sure it doesn't already exist.
    $assert->pageTextContains('Cache item does not exist');
    $this->drupalGet('examples/cache-example');
    $this->submitForm([
        'expiration' => -10,
    ], 'Create a cache item with this expiration');
    // We should now have an already-expired item. Automatically invalid.
    $assert->pageTextContains('Cache_item is invalid');
    // Now do the expiration operation.
    $this->drupalGet('examples/cache-example');
    $this->submitForm([
        'cache_clear_type' => 'expire',
    ], 'Clear or expire cache');
    // And verify that it was removed.
    $assert->pageTextContains('Cache item does not exist');
    // Create a cached item. This time we'll make it not expire.
    $this->drupalGet('examples/cache-example');
    $this->submitForm([
        'expiration' => 'never_remove',
    ], 'Create a cache item with this expiration');
    // We should now have an never-remove item.
    $assert->pageTextContains('Cache item exists and is set to expire at Never expires');
    // Now do the expiration operation.
    $this->drupalGet('examples/cache-example');
    $this->submitForm([
        'cache_clear_type' => 'expire',
    ], 'Clear or expire cache');
    // And verify that it was not removed.
    $assert->pageTextContains('Cache item exists and is set to expire at Never expires');
    // Now do tag invalidation.
    $this->drupalGet('examples/cache-example');
    $this->submitForm([
        'cache_clear_type' => 'remove_tag',
    ], 'Clear or expire cache');
    // And verify that it was invalidated.
    $assert->pageTextContains('Cache_item is invalid');
    // Do the hard delete.
    $this->drupalGet('examples/cache-example');
    $this->submitForm([
        'cache_clear_type' => 'remove_all',
    ], 'Clear or expire cache');
    // And verify that it was removed.
    $assert->pageTextContains('Cache item does not exist');
}