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<?php

namespace Drupal\Tests\Component\Plugin\Discovery;

use Drupal\Component\Plugin\Exception\PluginNotFoundException;
use PHPUnit\Framework\TestCase;

/**
 * @group Plugin
 * @coversDefaultClass \Drupal\Component\Plugin\Discovery\DiscoveryTrait
 */
class DiscoveryTraitTest extends TestCase {

  /**
   * Data provider for testDoGetDefinition().
   *
   * @return array
   *   - Expected plugin definition.
   *   - Plugin definition array, to pass to doGetDefinition().
   *   - Plugin ID to get, passed to doGetDefinition().
   */
  public function providerDoGetDefinition() {
    return [
      ['definition', ['plugin_name' => 'definition'], 'plugin_name'],
      [NULL, ['plugin_name' => 'definition'], 'bad_plugin_name'],
    ];
  }

  /**
   * @covers ::doGetDefinition
   * @dataProvider providerDoGetDefinition
   */
  public function testDoGetDefinition($expected, $definitions, $plugin_id) {
    // Mock the trait.
    $trait = $this->getMockForTrait('Drupal\Component\Plugin\Discovery\DiscoveryTrait');
    // Un-protect the method using reflection.
    $method_ref = new \ReflectionMethod($trait, 'doGetDefinition');
    $method_ref->setAccessible(TRUE);
    // Call doGetDefinition, with $exception_on_invalid always FALSE.
    $this->assertSame(
      $expected,
      $method_ref->invoke($trait, $definitions, $plugin_id, FALSE)
    );
  }

  /**
   * Data provider for testDoGetDefinitionException()
   *
   * @return array
   *   - Expected plugin definition.
   *   - Plugin definition array, to pass to doGetDefinition().
   *   - Plugin ID to get, passed to doGetDefinition().
   */
  public function providerDoGetDefinitionException() {
    return [
      [FALSE, ['plugin_name' => 'definition'], 'bad_plugin_name'],
    ];
  }

  /**
   * @covers ::doGetDefinition
   * @dataProvider providerDoGetDefinitionException
   * @uses \Drupal\Component\Plugin\Exception\PluginNotFoundException
   */
  public function testDoGetDefinitionException($expected, $definitions, $plugin_id) {
    // Mock the trait.
    $trait = $this->getMockForTrait('Drupal\Component\Plugin\Discovery\DiscoveryTrait');
    // Un-protect the method using reflection.
    $method_ref = new \ReflectionMethod($trait, 'doGetDefinition');
    $method_ref->setAccessible(TRUE);
    // Call doGetDefinition, with $exception_on_invalid always TRUE.
    $this->expectException(PluginNotFoundException::class);
    $method_ref->invoke($trait, $definitions, $plugin_id, TRUE);
  }

  /**
   * @covers ::getDefinition
   * @dataProvider providerDoGetDefinition
   */
  public function testGetDefinition($expected, $definitions, $plugin_id) {
    // Since getDefinition is a wrapper around doGetDefinition(), we can re-use
    // its data provider. We just have to tell abstract method getDefinitions()
    // to use the $definitions array.
    $trait = $this->getMockForTrait('Drupal\Component\Plugin\Discovery\DiscoveryTrait');
    $trait->expects($this->once())
      ->method('getDefinitions')
      ->willReturn($definitions);
    // Call getDefinition(), with $exception_on_invalid always FALSE.
    $this->assertSame(
      $expected,
      $trait->getDefinition($plugin_id, FALSE)
    );
  }

  /**
   * @covers ::getDefinition
   * @dataProvider providerDoGetDefinitionException
   * @uses \Drupal\Component\Plugin\Exception\PluginNotFoundException
   */
  public function testGetDefinitionException($expected, $definitions, $plugin_id) {
    // Since getDefinition is a wrapper around doGetDefinition(), we can re-use
    // its data provider. We just have to tell abstract method getDefinitions()
    // to use the $definitions array.
    $trait = $this->getMockForTrait('Drupal\Component\Plugin\Discovery\DiscoveryTrait');
    $trait->expects($this->once())
      ->method('getDefinitions')
      ->willReturn($definitions);
    // Call getDefinition(), with $exception_on_invalid always TRUE.
    $this->expectException(PluginNotFoundException::class);
    $trait->getDefinition($plugin_id, TRUE);
  }

  /**
   * Data provider for testHasDefinition().
   *
   * @return array
   *   - Expected TRUE or FALSE.
   *   - Plugin ID to look for.
   */
  public function providerHasDefinition() {
    return [
      [TRUE, 'valid'],
      [FALSE, 'not_valid'],
    ];
  }

  /**
   * @covers ::hasDefinition
   * @dataProvider providerHasDefinition
   */
  public function testHasDefinition($expected, $plugin_id) {
    $trait = $this->getMockBuilder('Drupal\Component\Plugin\Discovery\DiscoveryTrait')
      ->setMethods(['getDefinition'])
      ->getMockForTrait();
    // Set up our mocked getDefinition() to return TRUE for 'valid' and FALSE
    // for 'not_valid'.
    $trait->expects($this->once())
      ->method('getDefinition')
      ->will($this->returnValueMap([
        ['valid', FALSE, TRUE],
        ['not_valid', FALSE, FALSE],
      ]));
    // Call hasDefinition().
    $this->assertSame(
      $expected,
      $trait->hasDefinition($plugin_id)
    );
  }

}