class MenuTreeParametersTest

class MenuTreeParametersTest extends UnitTestCase {
  
  /**
   * Provides test data for testSetMinDepth().
   */
  public static function providerTestSetMinDepth() {
    $data = [];
    // Valid values at the extremes and in the middle.
    $data[] = [
      1,
      1,
    ];
    $data[] = [
      2,
      2,
    ];
    $data[] = [
      9,
      9,
    ];
    // Invalid values are mapped to the closest valid value.
    $data[] = [
      -10000,
      1,
    ];
    $data[] = [
      0,
      1,
    ];
    // … except for those invalid values that reach beyond the maximum depth,
    // because MenuTreeParameters is a value object and hence cannot depend
    // on anything; to know the actual maximum depth, it'd have to depend on the
    // MenuTreeStorage service.
    $data[] = [
      10,
      10,
    ];
    $data[] = [
      100000,
      100000,
    ];
    return $data;
  }
  
  /**
   * Tests setMinDepth().
   *
   * @covers ::setMinDepth
   * @dataProvider providerTestSetMinDepth
   */
  public function testSetMinDepth($min_depth, $expected) : void {
    $parameters = new MenuTreeParameters();
    $parameters->setMinDepth($min_depth);
    $this->assertEquals($expected, $parameters->minDepth);
  }
  
  /**
   * Tests addExpandedParents().
   *
   * @covers ::addExpandedParents
   */
  public function testAddExpanded() : void {
    $parameters = new MenuTreeParameters();
    // Verify default value.
    $this->assertEquals([], $parameters->expandedParents);
    // Add actual menu link plugin IDs to be expanded.
    $parameters->addExpandedParents([
      'foo',
      'bar',
      'baz',
    ]);
    $this->assertEquals([
      'foo',
      'bar',
      'baz',
    ], $parameters->expandedParents);
    // Add additional menu link plugin IDs; they should be merged, not replacing
    // the old ones.
    $parameters->addExpandedParents([
      'qux',
      'foobar',
    ]);
    $this->assertEquals([
      'foo',
      'bar',
      'baz',
      'qux',
      'foobar',
    ], $parameters->expandedParents);
    // Add pre-existing menu link plugin IDs; they should not be added again;
    // this is a set.
    $parameters->addExpandedParents([
      'bar',
      'foobar',
    ]);
    $this->assertEquals([
      'foo',
      'bar',
      'baz',
      'qux',
      'foobar',
    ], $parameters->expandedParents);
  }
  
  /**
   * Tests addCondition().
   *
   * @covers ::addCondition
   */
  public function testAddCondition() : void {
    $parameters = new MenuTreeParameters();
    // Verify default value.
    $this->assertEquals([], $parameters->conditions);
    // Add a condition.
    $parameters->addCondition('expanded', 1);
    $this->assertEquals([
      'expanded' => 1,
    ], $parameters->conditions);
    // Add another condition.
    $parameters->addCondition('has_children', 0);
    $this->assertEquals([
      'expanded' => 1,
      'has_children' => 0,
    ], $parameters->conditions);
    // Add a condition with an operator.
    $parameters->addCondition('provider', [
      'module1',
      'module2',
    ], 'IN');
    $this->assertEquals([
      'expanded' => 1,
      'has_children' => 0,
      'provider' => [
        [
          'module1',
          'module2',
        ],
        'IN',
      ],
    ], $parameters->conditions);
    // Add another condition with an operator.
    $parameters->addCondition('id', 1337, '<');
    $this->assertEquals([
      'expanded' => 1,
      'has_children' => 0,
      'provider' => [
        [
          'module1',
          'module2',
        ],
        'IN',
      ],
      'id' => [
        1337,
        '<',
      ],
    ], $parameters->conditions);
    // It's impossible to add two conditions on the same field; in that case,
    // the old condition will be overwritten.
    $parameters->addCondition('provider', 'other_module');
    $this->assertEquals([
      'expanded' => 1,
      'has_children' => 0,
      'provider' => 'other_module',
      'id' => [
        1337,
        '<',
      ],
    ], $parameters->conditions);
  }
  
  /**
   * Tests onlyEnabledLinks().
   *
   * @covers ::onlyEnabledLinks
   */
  public function testOnlyEnabledLinks() : void {
    $parameters = new MenuTreeParameters();
    $parameters->onlyEnabledLinks();
    $this->assertEquals(1, $parameters->conditions['enabled']);
  }
  
  /**
   * Tests setTopLevelOnly().
   *
   * @covers ::setTopLevelOnly
   */
  public function testSetTopLevelOnly() : void {
    $parameters = new MenuTreeParameters();
    $parameters->setTopLevelOnly();
    $this->assertEquals(1, $parameters->maxDepth);
  }
  
  /**
   * Tests excludeRoot().
   *
   * @covers ::excludeRoot
   */
  public function testExcludeRoot() : void {
    $parameters = new MenuTreeParameters();
    $parameters->excludeRoot();
    $this->assertEquals(1, $parameters->minDepth);
  }
  
  /**
   * @covers ::serialize
   * @covers ::unserialize
   */
  public function testSerialize() : void {
    $parameters = new MenuTreeParameters();
    $parameters->setRoot(1);
    $parameters->setMinDepth('2');
    $parameters->setMaxDepth('9');
    $parameters->addExpandedParents([
      '',
      'foo',
    ]);
    $parameters->setActiveTrail([
      '',
      'bar',
    ]);
    $after_serialize = unserialize(serialize($parameters));
    $this->assertSame('1', $after_serialize->root);
    $this->assertSame(2, $after_serialize->minDepth);
    $this->assertSame(9, $after_serialize->maxDepth);
    $this->assertSame([
      '',
      'foo',
    ], $after_serialize->expandedParents);
    $this->assertSame([
      'bar',
    ], $after_serialize->activeTrail);
  }

}