class NidArgumentTest

class NidArgumentTest extends ViewsKernelTestBase {
    
    /**
     * {@inheritdoc}
     */
    protected static $modules = [
        'node',
        'field',
        'text',
        'node_test_config',
        'user',
        'node_test_views',
    ];
    
    /**
     * Views used by this test.
     *
     * @var array
     */
    public static $testViews = [
        'test_nid_argument',
    ];
    
    /**
     * {@inheritdoc}
     */
    protected function setUp($import_test_views = TRUE) : void {
        parent::setUp($import_test_views);
        $this->installEntitySchema('node');
        $this->installEntitySchema('user');
        $this->installConfig([
            'node',
            'field',
        ]);
        ViewTestData::createTestViews(static::class, [
            'node_test_views',
        ]);
    }
    
    /**
     * Tests the nid argument.
     */
    public function testNidArgument() {
        $view = Views::getView('test_nid_argument');
        $view->setDisplay();
        $node1 = Node::create([
            'type' => 'default',
            'title' => $this->randomMachineName(),
        ]);
        $node1->save();
        $node2 = Node::create([
            'type' => 'default',
            'title' => $this->randomMachineName(),
        ]);
        $node2->save();
        $view->preview();
        $this->assertCount(2, $view->result, 'Found the expected number of results.');
        // Set the second node id as an argument.
        $view->destroy();
        $view->preview('default', [
            $node2->id(),
        ]);
        // Verify that the title is overridden.
        $this->assertEquals($node2->getTitle(), $view->getTitle());
        // Verify that the argument filtering works.
        $this->assertCount(1, $view->result, 'Found the expected number of results.');
        $this->assertEquals($node2->id(), (string) $view->style_plugin
            ->getField(0, 'nid'), 'Found the correct nid.');
        // Verify that setting a non-existing id as argument results in no nodes
        // being shown.
        $view->destroy();
        $view->preview('default', [
            22,
        ]);
        $this->assertCount(0, $view->result, 'Found the expected number of results.');
    }

}