--- /dev/null
+<?php
+
+namespace Drupal\Tests\config\Functional;
+
+use Drupal\Core\Serialization\Yaml;
+use Drupal\Tests\BrowserTestBase;
+
+/**
+ * Tests the user interface for importing/exporting a single configuration.
+ *
+ * @group config
+ */
+class ConfigSingleImportExportTest extends BrowserTestBase {
+
+ /**
+ * Modules to enable.
+ *
+ * @var array
+ */
+ public static $modules = [
+ 'block',
+ 'config',
+ 'config_test',
+ // Adding language module makes it possible to involve non-default
+ // (language.xx) collections in import/export operations.
+ 'language',
+ ];
+
+ protected function setUp() {
+ parent::setUp();
+
+ $this->drupalPlaceBlock('page_title_block');
+ }
+
+ /**
+ * Tests importing a single configuration file.
+ */
+ public function testImport() {
+ $storage = \Drupal::entityManager()->getStorage('config_test');
+ $uuid = \Drupal::service('uuid');
+
+ $this->drupalLogin($this->drupalCreateUser(['import configuration']));
+
+ // Attempt an import with invalid YAML.
+ $edit = [
+ 'config_type' => 'action',
+ 'import' => '{{{',
+ ];
+
+ $this->drupalPostForm('admin/config/development/configuration/single/import', $edit, t('Import'));
+ // Assert the static portion of the error since different parsers could give different text in their error.
+ $this->assertText('The import failed with the following message: ');
+
+ $import = <<<EOD
+label: First
+weight: 0
+style: ''
+status: '1'
+EOD;
+ $edit = [
+ 'config_type' => 'config_test',
+ 'import' => $import,
+ ];
+ // Attempt an import with a missing ID.
+ $this->drupalPostForm('admin/config/development/configuration/single/import', $edit, t('Import'));
+ $this->assertText(t('Missing ID key "@id_key" for this @entity_type import.', ['@id_key' => 'id', '@entity_type' => 'Test configuration']));
+
+ // Perform an import with no specified UUID and a unique ID.
+ $this->assertNull($storage->load('first'));
+ $edit['import'] = "id: first\n" . $edit['import'];
+ $this->drupalPostForm('admin/config/development/configuration/single/import', $edit, t('Import'));
+ $this->assertRaw(t('Are you sure you want to create a new %name @type?', ['%name' => 'first', '@type' => 'test configuration']));
+ $this->drupalPostForm(NULL, [], t('Confirm'));
+ $entity = $storage->load('first');
+ $this->assertIdentical($entity->label(), 'First');
+ $this->assertIdentical($entity->id(), 'first');
+ $this->assertTrue($entity->status());
+ $this->assertRaw(t('The configuration was imported successfully.'));
+
+ // Attempt an import with an existing ID but missing UUID.
+ $this->drupalPostForm('admin/config/development/configuration/single/import', $edit, t('Import'));
+ $this->assertText(t('An entity with this machine name already exists but the import did not specify a UUID.'));
+
+ // Attempt an import with a mismatched UUID and existing ID.
+ $edit['import'] .= "\nuuid: " . $uuid->generate();
+ $this->drupalPostForm('admin/config/development/configuration/single/import', $edit, t('Import'));
+ $this->assertText(t('An entity with this machine name already exists but the UUID does not match.'));
+
+ // Attempt an import with a custom ID.
+ $edit['custom_entity_id'] = 'custom_id';
+ $this->drupalPostForm('admin/config/development/configuration/single/import', $edit, t('Import'));
+ $this->assertRaw(t('Are you sure you want to create a new %name @type?', ['%name' => 'custom_id', '@type' => 'test configuration']));
+ $this->drupalPostForm(NULL, [], t('Confirm'));
+ $this->assertRaw(t('The configuration was imported successfully.'));
+
+ // Perform an import with a unique ID and UUID.
+ $import = <<<EOD
+id: second
+label: Second
+weight: 0
+style: ''
+status: '0'
+EOD;
+ $edit = [
+ 'config_type' => 'config_test',
+ 'import' => $import,
+ ];
+ $second_uuid = $uuid->generate();
+ $edit['import'] .= "\nuuid: " . $second_uuid;
+ $this->drupalPostForm('admin/config/development/configuration/single/import', $edit, t('Import'));
+ $this->assertRaw(t('Are you sure you want to create a new %name @type?', ['%name' => 'second', '@type' => 'test configuration']));
+ $this->drupalPostForm(NULL, [], t('Confirm'));
+ $entity = $storage->load('second');
+ $this->assertRaw(t('The configuration was imported successfully.'));
+ $this->assertIdentical($entity->label(), 'Second');
+ $this->assertIdentical($entity->id(), 'second');
+ $this->assertFalse($entity->status());
+ $this->assertIdentical($entity->uuid(), $second_uuid);
+
+ // Perform an update.
+ $import = <<<EOD
+id: second
+uuid: $second_uuid
+label: 'Second updated'
+weight: 0
+style: ''
+status: '0'
+EOD;
+ $edit = [
+ 'config_type' => 'config_test',
+ 'import' => $import,
+ ];
+ $this->drupalPostForm('admin/config/development/configuration/single/import', $edit, t('Import'));
+ $this->assertRaw(t('Are you sure you want to update the %name @type?', ['%name' => 'second', '@type' => 'test configuration']));
+ $this->drupalPostForm(NULL, [], t('Confirm'));
+ $entity = $storage->load('second');
+ $this->assertRaw(t('The configuration was imported successfully.'));
+ $this->assertIdentical($entity->label(), 'Second updated');
+
+ // Try to perform an update which adds missing dependencies.
+ $import = <<<EOD
+id: second
+uuid: $second_uuid
+label: 'Second updated'
+weight: 0
+style: ''
+status: '0'
+dependencies:
+ module:
+ - does_not_exist
+EOD;
+ $edit = [
+ 'config_type' => 'config_test',
+ 'import' => $import,
+ ];
+ $this->drupalPostForm('admin/config/development/configuration/single/import', $edit, t('Import'));
+ $this->assertRaw(t('Configuration %name depends on the %owner module that will not be installed after import.', ['%name' => 'config_test.dynamic.second', '%owner' => 'does_not_exist']));
+
+ // Try to preform an update which would create a PHP object if Yaml parsing
+ // not securely set up.
+ // Perform an update.
+ $import = <<<EOD
+id: second
+uuid: $second_uuid
+label: !php/object "O:36:\"Drupal\\\Core\\\Test\\\ObjectSerialization\":0:{}"
+weight: 0
+style: ''
+status: '0'
+EOD;
+ $edit = [
+ 'config_type' => 'config_test',
+ 'import' => $import,
+ ];
+ $this->drupalPostForm('admin/config/development/configuration/single/import', $edit, t('Import'));
+ $this->assertRaw(t('Are you sure you want to update the %name @type?', ['%name' => 'second', '@type' => 'test configuration']));
+ $this->drupalPostForm(NULL, [], t('Confirm'));
+ $entity = $storage->load('second');
+ $this->assertRaw(t('The configuration was imported successfully.'));
+ $this->assertTrue(is_string($entity->label()), 'Entity label is a string');
+ $this->assertTrue(strpos($entity->label(), 'ObjectSerialization') > 0, 'Label contains serialized object');
+ }
+
+ /**
+ * Tests importing a simple configuration file.
+ */
+ public function testImportSimpleConfiguration() {
+ $this->drupalLogin($this->drupalCreateUser(['import configuration']));
+ $config = $this->config('system.site')->set('name', 'Test simple import');
+
+ // Place branding block with site name into header region.
+ $this->drupalPlaceBlock('system_branding_block', ['region' => 'header']);
+
+ $edit = [
+ 'config_type' => 'system.simple',
+ 'config_name' => $config->getName(),
+ 'import' => Yaml::encode($config->get()),
+ ];
+ $this->drupalPostForm('admin/config/development/configuration/single/import', $edit, t('Import'));
+ $this->assertRaw(t('Are you sure you want to update the %name @type?', ['%name' => $config->getName(), '@type' => 'simple configuration']));
+ $this->drupalPostForm(NULL, [], t('Confirm'));
+ $this->drupalGet('');
+ $this->assertText('Test simple import');
+
+ // Ensure that ConfigImporter validation is running when importing simple
+ // configuration.
+ $config_data = $this->config('core.extension')->get();
+ // Simulate uninstalling the Config module.
+ unset($config_data['module']['config']);
+ $edit = [
+ 'config_type' => 'system.simple',
+ 'config_name' => 'core.extension',
+ 'import' => Yaml::encode($config_data),
+ ];
+ $this->drupalPostForm('admin/config/development/configuration/single/import', $edit, t('Import'));
+ $this->assertText(t('Can not uninstall the Configuration module as part of a configuration synchronization through the user interface.'));
+
+ }
+
+ /**
+ * Tests exporting a single configuration file.
+ */
+ public function testExport() {
+ $this->drupalLogin($this->drupalCreateUser(['export configuration']));
+
+ $this->drupalGet('admin/config/development/configuration/single/export/system.simple');
+ $this->assertFieldByXPath('//select[@name="config_type"]//option[@selected="selected"]', t('Simple configuration'), 'The simple configuration option is selected when specified in the URL.');
+ // Spot check several known simple configuration files.
+ $element = $this->xpath('//select[@name="config_name"]')[0];
+ $options = $element->findAll('css', 'option');
+ $expected_options = ['system.site', 'user.settings'];
+ foreach ($options as &$option) {
+ $option = $option->getValue();
+ }
+ $this->assertIdentical($expected_options, array_intersect($expected_options, $options), 'The expected configuration files are listed.');
+
+ $this->drupalGet('admin/config/development/configuration/single/export/system.simple/system.image');
+ $this->assertEquals("toolkit: gd\n_core:\n default_config_hash: durWHaKeBaq4d9Wpi4RqwADj1OufDepcnJuhVLmKN24\n", $this->xpath('//textarea[@name="export"]')[0]->getValue(), 'The expected system configuration is displayed.');
+
+ $this->drupalGet('admin/config/development/configuration/single/export/date_format');
+ $this->assertFieldByXPath('//select[@name="config_type"]//option[@selected="selected"]', t('Date format'), 'The date format entity type is selected when specified in the URL.');
+
+ $this->drupalGet('admin/config/development/configuration/single/export/date_format/fallback');
+ $this->assertFieldByXPath('//select[@name="config_name"]//option[@selected="selected"]', t('Fallback date format (fallback)'), 'The fallback date format config entity is selected when specified in the URL.');
+
+ $fallback_date = \Drupal::entityManager()->getStorage('date_format')->load('fallback');
+ $yaml_text = $this->xpath('//textarea[@name="export"]')[0]->getValue();
+ $this->assertEqual(Yaml::decode($yaml_text), $fallback_date->toArray(), 'The fallback date format config entity export code is displayed.');
+ }
+
+}