--- /dev/null
+<?php
+
+namespace Drupal\Tests\block\Functional;
+
+use Drupal\Tests\BrowserTestBase;
+
+/**
+ * Tests block module's installation.
+ *
+ * @group block
+ */
+class BlockInstallTest extends BrowserTestBase {
+
+ public function testCacheTagInvalidationUponInstallation() {
+ // Warm the page cache.
+ $this->drupalGet('');
+ $this->assertNoText('Powered by Drupal');
+ $this->assertNoCacheTag('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->container->get('router.builder')->rebuild();
+ $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->assertCacheTag('config:block_list');
+ $this->assertText('Powered by Drupal');
+ }
+
+}