function ContextPluginTest::testContext

Tests basic context definition and value getters and setters.

File

core/tests/Drupal/KernelTests/Core/Plugin/ContextPluginTest.php, line 34

Class

ContextPluginTest

Tests that contexts are properly set and working within plugins.

Namespace

Code

public function testContext() : void {
    $this->installEntitySchema('user');
    $this->installEntitySchema('node');
    $type = NodeType::create([
        'type' => 'page',
        'name' => 'Page',
    ]);
    $type->save();
    $name = $this->randomMachineName();
    $manager = new MockBlockManager();
    $plugin = $manager->createInstance('user_name');
    // Create a node, add it as context, catch the exception.
    $node = Node::create([
        'type' => 'page',
        'title' => $name,
    ]);
    // Try to get context that is missing its definition.
    try {
        $plugin->getContextDefinition('not_exists');
        $this->fail('The user context should not yet be set.');
    } catch (ContextException $e) {
        $this->assertEquals('The not_exists context is not a valid context.', $e->getMessage());
    }
    // Test the getContextDefinitions() method.
    $user_context_definition = EntityContextDefinition::fromEntityTypeId('user')->setLabel('User');
    $this->assertEquals($plugin->getContextDefinitions()['user']
        ->getLabel(), $user_context_definition->getLabel());
    // Test the getContextDefinition() method for a valid context.
    $this->assertEquals($plugin->getContextDefinition('user')
        ->getLabel(), $user_context_definition->getLabel());
    // Try to get a context with valid definition.
    $this->assertNotNull($plugin->getContext('user'), 'Succeeded to get a context with a valid definition.');
    // Try to get a value of a valid context, while this value has not been set.
    try {
        $plugin->getContextValue('user');
    } catch (ContextException $e) {
        $this->assertSame("The 'entity:user' context is required and not present.", $e->getMessage(), 'Requesting a non-set value of a required context should throw a context exception.');
    }
    // Try to pass the wrong class type as a context value.
    $plugin->setContextValue('user', $node);
    $violations = $plugin->validateContexts();
    $this->assertNotEmpty($violations, 'The provided context value does not pass validation.');
    // Set an appropriate context value and check to make sure its methods work
    // as expected.
    $user = User::create([
        'name' => $name,
    ]);
    $plugin->setContextValue('user', $user);
    $this->assertEquals($user->getAccountName(), $plugin->getContextValue('user')
        ->getAccountName());
    $this->assertEquals($user->label(), $plugin->getTitle());
    // Test Optional context handling.
    $plugin = $manager->createInstance('user_name_optional');
    $this->assertNull($plugin->getContextValue('user'), 'Requesting a non-set value of a valid context should return NULL.');
    // Test Complex compound context handling.
    $complex_plugin = $manager->createInstance('complex_context');
    $complex_plugin->setContextValue('user', $user);
    // With only the user context set, try to get the context values.
    $values = $complex_plugin->getContextValues();
    $this->assertNull($values['node'], 'The node context is not yet set.');
    $this->assertNotNull($values['user'], 'The user context is set');
    $complex_plugin->setContextValue('node', $node);
    $context_wrappers = $complex_plugin->getContexts();
    // Make sure what came out of the wrappers is good.
    $this->assertEquals($user->label(), $context_wrappers['user']->getContextValue()
        ->label());
    $this->assertEquals($node->label(), $context_wrappers['node']->getContextValue()
        ->label());
    // Make sure what comes out of the context values is good.
    $contexts = $complex_plugin->getContextValues();
    $this->assertEquals($user->label(), $contexts['user']->label());
    $this->assertEquals($node->label(), $contexts['node']->label());
    // Test the title method for the complex context plugin.
    $this->assertEquals($user->label() . ' -- ' . $node->label(), $complex_plugin->getTitle());
}