function BlockInstallTest::testCacheTagInvalidationUponInstallation

Tests cache tag invalidation after installing the block module.

File

core/modules/block/tests/src/Functional/BlockInstallTest.php, line 24

Class

BlockInstallTest

Tests block module's installation.

Namespace

Code

public function testCacheTagInvalidationUponInstallation() : void {
    // Warm the page cache.
    $this->drupalGet('');
    $this->assertSession()
        ->pageTextNotContains('Powered by Drupal');
    $this->assertSession()
        ->responseHeaderNotContains('X-Drupal-Cache-Tags', 'config:block_list');
    // Install the block module, and place the "Powered by Drupal" block.
    $this->container
        ->get('module_installer')
        ->install([
        'block',
        'shortcut',
    ]);
    $this->rebuildContainer();
    $this->drupalPlaceBlock('system_powered_by_block');
    // Check the same page, block.module's hook_install() should have
    // invalidated the 'rendered' cache tag to make blocks show up.
    $this->drupalGet('');
    $this->assertSession()
        ->responseHeaderContains('X-Drupal-Cache-Tags', 'config:block_list');
    $this->assertSession()
        ->pageTextContains('Powered by Drupal');
}