--- /dev/null
+<?php
+
+namespace Drupal\config\Tests;
+
+use Drupal\simpletest\WebTestBase;
+
+/**
+ * Tests the importing/exporting configuration based on the install profile.
+ *
+ * @group config
+ */
+class ConfigImportInstallProfileTest extends WebTestBase {
+
+ /**
+ * The profile to install as a basis for testing.
+ *
+ * @var string
+ */
+ protected $profile = 'testing_config_import';
+
+ /**
+ * Modules to install.
+ *
+ * @var array
+ */
+ public static $modules = ['config'];
+
+ /**
+ * A user with the 'synchronize configuration' permission.
+ *
+ * @var \Drupal\user\UserInterface
+ */
+ protected $webUser;
+
+ protected function setUp() {
+ parent::setUp();
+
+ $this->webUser = $this->drupalCreateUser(['synchronize configuration']);
+ $this->drupalLogin($this->webUser);
+ $this->copyConfig($this->container->get('config.storage'), $this->container->get('config.storage.sync'));
+ }
+
+ /**
+ * Tests config importer cannot uninstall install profiles.
+ *
+ * @see \Drupal\Core\EventSubscriber\ConfigImportSubscriber
+ */
+ public function testInstallProfileValidation() {
+ $sync = $this->container->get('config.storage.sync');
+ $this->copyConfig($this->container->get('config.storage'), $sync);
+ $core = $sync->read('core.extension');
+
+ // Ensure install profiles can not be uninstalled.
+ unset($core['module']['testing_config_import']);
+ $sync->write('core.extension', $core);
+
+ $this->drupalPostForm('admin/config/development/configuration', [], t('Import all'));
+ $this->assertText('The configuration cannot be imported because it failed validation for the following reasons:');
+ $this->assertText('Unable to uninstall the Testing config import profile since it is the install profile.');
+
+ // Uninstall dependencies of testing_config_import.
+ $core['module']['testing_config_import'] = 0;
+ unset($core['module']['syslog']);
+ unset($core['theme']['stark']);
+ $core['theme']['stable'] = 0;
+ $core['theme']['classy'] = 0;
+ $sync->write('core.extension', $core);
+ $sync->deleteAll('syslog.');
+ $theme = $sync->read('system.theme');
+ $theme['default'] = 'classy';
+ $sync->write('system.theme', $theme);
+ $this->drupalPostForm('admin/config/development/configuration', [], t('Import all'));
+ $this->assertText('The configuration was imported successfully.');
+ $this->rebuildContainer();
+ $this->assertFalse(\Drupal::moduleHandler()->moduleExists('syslog'), 'The syslog module has been uninstalled.');
+ $this->assertFalse(\Drupal::service('theme_handler')->themeExists('stark'), 'The stark theme has been uninstalled.');
+ $this->assertTrue(\Drupal::service('theme_handler')->themeExists('classy'), 'The classy theme has been installed.');
+ }
+
+}