VariantCollectionTraitTest.php

<?php

namespace Drupal\Tests\ctools\Unit;

use Prophecy\PhpUnit\ProphecyTrait;
use Drupal\Component\Plugin\PluginManagerInterface;
use Drupal\Component\Uuid\UuidInterface;
use Drupal\Core\DependencyInjection\ContainerBuilder;
use Drupal\Core\Display\VariantInterface;
use Drupal\ctools\Plugin\VariantCollectionTrait;
use Drupal\ctools\Plugin\VariantPluginCollection;
use Drupal\Tests\UnitTestCase;

/**
 * Tests the methods of a variant-aware class.
 *
 * @coversDefaultClass \Drupal\ctools\Plugin\VariantCollectionTrait
 *
 * @group Ctools
 */
class VariantCollectionTraitTest extends UnitTestCase {
    use ProphecyTrait;
    
    /**
     * @var \Drupal\Component\Plugin\PluginManagerInterface|\PHPUnit\Framework\MockObject\MockObject
     */
    protected $manager;
    
    /**
     * {@inheritdoc}
     */
    protected function setUp() : void {
        parent::setUp();
        $container = new ContainerBuilder();
        $this->manager = $this->prophesize(PluginManagerInterface::class);
        $container->set('plugin.manager.display_variant', $this->manager
            ->reveal());
        \Drupal::setContainer($container);
    }
    
    /**
     * @covers ::getVariants
     */
    public function testGetVariantsEmpty() {
        $trait_object = new TestVariantCollectionTrait();
        $this->manager
            ->createInstance()
            ->shouldNotBeCalled();
        $variants = $trait_object->getVariants();
        $this->assertInstanceOf(VariantPluginCollection::class, $variants);
        $this->assertSame(0, count($variants));
    }
    
    /**
     * @covers ::getVariants
     */
    public function testGetVariants() {
        $trait_object = new TestVariantCollectionTrait();
        $config = [
            'foo' => [
                'id' => 'foo_plugin',
            ],
            'bar' => [
                'id' => 'bar_plugin',
            ],
        ];
        foreach ($config as $value) {
            $plugin = $this->prophesize(VariantInterface::class);
            $this->manager
                ->createInstance($value['id'], $value)
                ->willReturn($plugin->reveal());
        }
        $trait_object->setVariantConfig($config);
        $variants = $trait_object->getVariants();
        $this->assertInstanceOf(VariantPluginCollection::class, $variants);
        $this->assertSame(2, count($variants));
        return $variants;
    }
    
    /**
     * @covers ::getVariants
     *
     * @depends testGetVariants
     */
    public function testGetVariantsSort(VariantPluginCollection $variants) {
        $this->assertEquals([
            'bar' => 'bar',
            'foo' => 'foo',
        ], $variants->getInstanceIds());
    }
    
    /**
     * @covers ::addVariant
     */
    public function testAddVariant() {
        $config = [
            'id' => 'foo',
        ];
        $uuid = 'test-uuid';
        $expected_config = $config + [
            'uuid' => $uuid,
        ];
        $uuid_generator = $this->prophesize(UuidInterface::class);
        $uuid_generator->generate()
            ->willReturn($uuid)
            ->shouldBeCalledTimes(1);
        $trait_object = new TestVariantCollectionTrait();
        $trait_object->setUuidGenerator($uuid_generator->reveal());
        $plugin_prophecy = $this->prophesize(VariantInterface::class);
        $plugin_prophecy->getConfiguration()
            ->willReturn($expected_config)
            ->shouldBeCalled();
        $plugin_prophecy->setConfiguration($expected_config)
            ->willReturn($expected_config)
            ->shouldBeCalled();
        $this->manager
            ->createInstance('foo', $expected_config)
            ->willReturn($plugin_prophecy->reveal());
        $resulting_uuid = $trait_object->addVariant($config);
        $this->assertSame($uuid, $resulting_uuid);
        $variants = $trait_object->getVariants();
        $this->assertSame([
            $uuid => $uuid,
        ], $variants->getInstanceIds());
        $this->assertSame([
            $uuid => $expected_config,
        ], $variants->getConfiguration());
        $this->assertSame($plugin_prophecy->reveal(), $variants->get($uuid));
        return [
            $trait_object,
            $uuid,
            $plugin_prophecy->reveal(),
        ];
    }
    
    /**
     * @covers ::getVariant
     *
     * @depends testAddVariant
     */
    public function testGetVariant($data) {
        [
            $trait_object,
            $uuid,
            $plugin,
        ] = $data;
        $this->manager
            ->createInstance()
            ->shouldNotBeCalled();
        $this->assertSame($plugin, $trait_object->getVariant($uuid));
        return [
            $trait_object,
            $uuid,
        ];
    }
    
    /**
     * @covers ::removeVariant
     *
     * @depends testGetVariant
     */
    public function testRemoveVariant($data) {
        [
            $trait_object,
            $uuid,
        ] = $data;
        $this->assertSame($trait_object, $trait_object->removeVariant($uuid));
        $this->assertFalse($trait_object->getVariants()
            ->has($uuid));
        return [
            $trait_object,
            $uuid,
        ];
    }
    
    /**
     * @covers ::getVariant
     *
     * @depends testRemoveVariant
     */
    public function testGetVariantException($data) {
        [
            $trait_object,
            $uuid,
        ] = $data;
        // Attempt to retrieve a variant that has been removed.
        $this->expectException('\\Drupal\\Component\\Plugin\\Exception\\PluginNotFoundException');
        $this->expectExceptionMessage("Plugin ID 'test-uuid' was not found.");
        $this->assertNull($trait_object->getVariant($uuid));
    }

}

/**
 *
 */
class TestVariantCollectionTrait {
    use VariantCollectionTrait;
    
    /**
     * @var array
     */
    protected $variantConfig = [];
    
    /**
     * @var \Drupal\Component\Uuid\UuidInterface
     */
    protected $uuidGenerator;
    
    /**
     * @param \Drupal\Component\Uuid\UuidInterface $uuid_generator
     *
     * @return $this
     */
    public function setUuidGenerator(UuidInterface $uuid_generator) {
        $this->uuidGenerator = $uuid_generator;
        return $this;
    }
    
    /**
     * {@inheritdoc}
     */
    protected function uuidGenerator() {
        return $this->uuidGenerator;
    }
    
    /**
     * Sets the variant configuration.
     *
     * @param array $config
     *   The variant configuration.
     *
     * @return $this
     */
    public function setVariantConfig(array $config) {
        $this->variantConfig = $config;
        return $this;
    }
    
    /**
     * {@inheritdoc}
     */
    protected function getVariantConfig() {
        return $this->variantConfig;
    }

}