<?php

/**
 *
 * Test various query vars and make sure the WP_Query class selects the correct posts.
 * We're testing against a known data set, so we can check that specific posts are included in the output.
 *
 * @group query
 */
class Tests_Query_Results extends WP_UnitTestCase {
	protected $q;

	static $cat_ids = array();
	static $tag_ids = array();
	static $post_ids = array();

	static $parent_one;
	static $parent_two;
	static $parent_three;
	static $child_one;
	static $child_two;
	static $child_three;
	static $child_four;

	public static function wpSetUpBeforeClass( $factory ) {
		self::$cat_ids[] = $cat_a = $factory->term->create( array( 'taxonomy' => 'category', 'name' => 'cat-a' ) );
		self::$cat_ids[] = $cat_b = $factory->term->create( array( 'taxonomy' => 'category', 'name' => 'cat-b' ) );
		self::$cat_ids[] = $cat_c = $factory->term->create( array( 'taxonomy' => 'category', 'name' => 'cat-c' ) );

		self::$tag_ids[] = $tag_a = $factory->term->create( array( 'taxonomy' => 'post_tag', 'name' => 'tag-a' ) );
		self::$tag_ids[] = $tag_b = $factory->term->create( array( 'taxonomy' => 'post_tag', 'name' => 'tag-b' ) );
		self::$tag_ids[] = $tag_c = $factory->term->create( array( 'taxonomy' => 'post_tag', 'name' => 'tag-c' ) );
		self::$tag_ids[] = $tag_nun = $factory->term->create( array( 'taxonomy' => 'post_tag', 'name' => 'tag-נ' ) );

		self::$post_ids[] = $factory->post->create( array( 'post_title' => 'tag-נ', 'tags_input' => array( 'tag-נ' ), 'post_date' => '2008-11-01 00:00:00' ) );
		self::$post_ids[] = $factory->post->create( array( 'post_title' => 'cats-a-b-c', 'post_date' => '2008-12-01 00:00:00', 'post_category' => array( $cat_a, $cat_b, $cat_c ) ) );
		self::$post_ids[] = $factory->post->create( array( 'post_title' => 'cats-a-and-b', 'post_date' => '2009-01-01 00:00:00', 'post_category' => array( $cat_a, $cat_b ) ) );
		self::$post_ids[] = $factory->post->create( array( 'post_title' => 'cats-b-and-c', 'post_date' => '2009-02-01 00:00:00', 'post_category' => array( $cat_b, $cat_c ) ) );
		self::$post_ids[] = $factory->post->create( array( 'post_title' => 'cats-a-and-c', 'post_date' => '2009-03-01 00:00:00', 'post_category' => array( $cat_a, $cat_c ) ) );
		self::$post_ids[] = $factory->post->create( array( 'post_title' => 'cat-a', 'post_date' => '2009-04-01 00:00:00', 'post_category' => array( $cat_a ) ) );
		self::$post_ids[] = $factory->post->create( array( 'post_title' => 'cat-b', 'post_date' => '2009-05-01 00:00:00', 'post_category' => array( $cat_b ) ) );
		self::$post_ids[] = $factory->post->create( array( 'post_title' => 'cat-c', 'post_date' => '2009-06-01 00:00:00', 'post_category' => array( $cat_c ) ) );
		self::$post_ids[] = $factory->post->create( array( 'post_title' => 'lorem-ipsum', 'post_date' => '2009-07-01 00:00:00' ) );
		self::$post_ids[] = $factory->post->create( array( 'post_title' => 'comment-test', 'post_date' => '2009-08-01 00:00:00' ) );
		self::$post_ids[] = $factory->post->create( array( 'post_title' => 'one-trackback', 'post_date' => '2009-09-01 00:00:00' ) );
		self::$post_ids[] = $factory->post->create( array( 'post_title' => 'many-trackbacks', 'post_date' => '2009-10-01 00:00:00' ) );
		self::$post_ids[] = $factory->post->create( array( 'post_title' => 'no-comments', 'post_date' => '2009-10-01 00:00:00' ) );
		self::$post_ids[] = $factory->post->create( array( 'post_title' => 'one-comment', 'post_date' => '2009-11-01 00:00:00' ) );
		self::$post_ids[] = $factory->post->create( array( 'post_title' => 'contributor-post-approved', 'post_date' => '2009-12-01 00:00:00' ) );
		self::$post_ids[] = $factory->post->create( array( 'post_title' => 'embedded-video', 'post_date' => '2010-01-01 00:00:00' ) );
		self::$post_ids[] = $factory->post->create( array( 'post_title' => 'simple-markup-test', 'post_date' => '2010-02-01 00:00:00' ) );
		self::$post_ids[] = $factory->post->create( array( 'post_title' => 'raw-html-code', 'post_date' => '2010-03-01 00:00:00' ) );
		self::$post_ids[] = $factory->post->create( array( 'post_title' => 'tags-a-b-c', 'tags_input' => array( 'tag-a', 'tag-b', 'tag-c' ), 'post_date' => '2010-04-01 00:00:00' ) );
		self::$post_ids[] = $factory->post->create( array( 'post_title' => 'tag-a', 'tags_input' => array( 'tag-a' ), 'post_date' => '2010-05-01 00:00:00' ) );
		self::$post_ids[] = $factory->post->create( array( 'post_title' => 'tag-b', 'tags_input' => array( 'tag-b' ), 'post_date' => '2010-06-01 00:00:00' ) );
		self::$post_ids[] = $factory->post->create( array( 'post_title' => 'tag-c', 'tags_input' => array( 'tag-c' ), 'post_date' => '2010-07-01 00:00:00' ) );
		self::$post_ids[] = $factory->post->create( array( 'post_title' => 'tags-a-and-b', 'tags_input' => array( 'tag-a', 'tag-b' ), 'post_date' => '2010-08-01 00:00:00' ) );
		self::$post_ids[] = $factory->post->create( array( 'post_title' => 'tags-b-and-c', 'tags_input' => array( 'tag-b', 'tag-c' ), 'post_date' => '2010-09-01 00:00:00' ) );
		self::$post_ids[] = $factory->post->create( array( 'post_title' => 'tags-a-and-c', 'tags_input' => array( 'tag-a', 'tag-c' ), 'post_date' => '2010-10-01 00:00:00' ) );

		self::$post_ids[] = self::$parent_one = $factory->post->create( array( 'post_title' => 'parent-one', 'post_date' => '2007-01-01 00:00:00' ) );
		self::$post_ids[] = self::$parent_two = $factory->post->create( array( 'post_title' => 'parent-two', 'post_date' => '2007-01-01 00:00:00' ) );
		self::$post_ids[] = self::$parent_three = $factory->post->create( array( 'post_title' => 'parent-three', 'post_date' => '2007-01-01 00:00:00' ) );
		self::$post_ids[] = self::$child_one = $factory->post->create( array( 'post_title' => 'child-one', 'post_parent' => self::$parent_one, 'post_date' => '2007-01-01 00:00:01' ) );
		self::$post_ids[] = self::$child_two = $factory->post->create( array( 'post_title' => 'child-two', 'post_parent' => self::$parent_one, 'post_date' => '2007-01-01 00:00:02' ) );
		self::$post_ids[] = self::$child_three = $factory->post->create( array( 'post_title' => 'child-three', 'post_parent' => self::$parent_two, 'post_date' => '2007-01-01 00:00:03' ) );
		self::$post_ids[] = self::$child_four = $factory->post->create( array( 'post_title' => 'child-four', 'post_parent' => self::$parent_two, 'post_date' => '2007-01-01 00:00:04' ) );
	}

	function setUp() {
		parent::setUp();

		unset( $this->q );
		$this->q = new WP_Query();
	}

	function test_query_default() {
		$posts = $this->q->query('');

		// the output should be the most recent 10 posts as listed here
		$expected = array(
			0 => 'tags-a-and-c',
			1 => 'tags-b-and-c',
			2 => 'tags-a-and-b',
			3 => 'tag-c',
			4 => 'tag-b',
			5 => 'tag-a',
			6 => 'tags-a-b-c',
			7 => 'raw-html-code',
			8 => 'simple-markup-test',
			9 => 'embedded-video',
		);

		$this->assertEquals( $expected, wp_list_pluck( $posts, 'post_name' ) );
	}

	function test_query_tag_a() {
		$posts = $this->q->query('tag=tag-a');

		// there are 4 posts with Tag A
		$this->assertCount( 4, $posts );
		$this->assertEquals( 'tags-a-and-c', $posts[0]->post_name );
		$this->assertEquals( 'tags-a-and-b', $posts[1]->post_name );
		$this->assertEquals( 'tag-a', $posts[2]->post_name );
		$this->assertEquals( 'tags-a-b-c', $posts[3]->post_name );
	}

	function test_query_tag_b() {
		$posts = $this->q->query('tag=tag-b');

		// there are 4 posts with Tag A
		$this->assertCount( 4, $posts );
		$this->assertEquals( 'tags-b-and-c', $posts[0]->post_name );
		$this->assertEquals( 'tags-a-and-b', $posts[1]->post_name );
		$this->assertEquals( 'tag-b', $posts[2]->post_name );
		$this->assertEquals( 'tags-a-b-c', $posts[3]->post_name );
	}

	/**
	 * @ticket 21779
	 */
	function test_query_tag_nun() {
		$posts = $this->q->query('tag=tag-נ');

		// there is 1 post with Tag נ
		$this->assertCount( 1, $posts );
		$this->assertEquals( 'tag-%d7%a0', $posts[0]->post_name );
	}

	function test_query_tag_id() {
		$tag = tag_exists('tag-a');
		$posts = $this->q->query( "tag_id=" . $tag['term_id'] );

		// there are 4 posts with Tag A
		$this->assertCount( 4, $posts );
		$this->assertEquals( 'tags-a-and-c', $posts[0]->post_name );
		$this->assertEquals( 'tags-a-and-b', $posts[1]->post_name );
		$this->assertEquals( 'tag-a', $posts[2]->post_name );
		$this->assertEquals( 'tags-a-b-c', $posts[3]->post_name );
	}

	function test_query_tag_slug__in() {
		$posts = $this->q->query("tag_slug__in[]=tag-b&tag_slug__in[]=tag-c");

		// there are 4 posts with either Tag B or Tag C
		$this->assertCount( 6, $posts );
		$this->assertEquals( 'tags-a-and-c', $posts[0]->post_name );
		$this->assertEquals( 'tags-b-and-c', $posts[1]->post_name );
		$this->assertEquals( 'tags-a-and-b', $posts[2]->post_name );
		$this->assertEquals( 'tag-c', $posts[3]->post_name );
		$this->assertEquals( 'tag-b', $posts[4]->post_name );
		$this->assertEquals( 'tags-a-b-c', $posts[5]->post_name );
	}


	function test_query_tag__in() {
		$tag_a = tag_exists('tag-a');
		$tag_b = tag_exists('tag-b');
		$posts = $this->q->query( "tag__in[]=". $tag_a['term_id'] . "&tag__in[]=" . $tag_b['term_id'] );

		// there are 6 posts with either Tag A or Tag B
		$this->assertCount( 6, $posts );
		$this->assertEquals( 'tags-a-and-c', $posts[0]->post_name );
		$this->assertEquals( 'tags-b-and-c', $posts[1]->post_name );
		$this->assertEquals( 'tags-a-and-b', $posts[2]->post_name );
		$this->assertEquals( 'tag-b', $posts[3]->post_name );
		$this->assertEquals( 'tag-a', $posts[4]->post_name );
		$this->assertEquals( 'tags-a-b-c', $posts[5]->post_name );
	}

	function test_query_tag__not_in() {
		$tag_a = tag_exists('tag-a');
		$posts = $this->q->query( "tag__not_in[]=" . $tag_a['term_id'] );

		// the most recent 10 posts with Tag A excluded
		// (note the different between this and test_query_default)
		$expected = array (
			0 => 'tags-b-and-c',
			1 => 'tag-c',
			2 => 'tag-b',
			3 => 'raw-html-code',
			4 => 'simple-markup-test',
			5 => 'embedded-video',
			6 => 'contributor-post-approved',
			7 => 'one-comment',
			8 => 'no-comments',
			9 => 'many-trackbacks',
		);

		$this->assertEquals( $expected, wp_list_pluck( $posts, 'post_name' ) );
	}

	function test_query_tag__in_but__not_in() {
		$tag_a = tag_exists('tag-a');
		$tag_b = tag_exists('tag-b');
		$posts = $this->q->query( "tag__in[]=" . $tag_a['term_id'] . "&tag__not_in[]=" . $tag_b['term_id'] );

		// there are 4 posts with Tag A, only 2 when we exclude Tag B
		$this->assertCount( 2, $posts );
		$this->assertEquals( 'tags-a-and-c', $posts[0]->post_name );
		$this->assertEquals( 'tag-a', $posts[1]->post_name );
	}


	function test_query_category_name() {
		$posts = $this->q->query('category_name=cat-a');

		// there are 4 posts with Cat A, we'll check for them by name
		$this->assertCount( 4, $posts );
		$this->assertEquals( 'cat-a', $posts[0]->post_name );
		$this->assertEquals( 'cats-a-and-c', $posts[1]->post_name );
		$this->assertEquals( 'cats-a-and-b', $posts[2]->post_name );
		$this->assertEquals( 'cats-a-b-c', $posts[3]->post_name );
	}

	function test_query_cat() {
		$cat = category_exists('cat-b');
		$posts = $this->q->query("cat=$cat");

		// there are 4 posts with Cat B
		$this->assertCount( 4, $posts );
		$this->assertEquals( 'cat-b', $posts[0]->post_name );
		$this->assertEquals( 'cats-b-and-c', $posts[1]->post_name );
		$this->assertEquals( 'cats-a-and-b', $posts[2]->post_name );
		$this->assertEquals( 'cats-a-b-c', $posts[3]->post_name );
	}

	function test_query_posts_per_page() {
		$posts = $this->q->query('posts_per_page=5');

		$expected = array (
			0 => 'tags-a-and-c',
			1 => 'tags-b-and-c',
			2 => 'tags-a-and-b',
			3 => 'tag-c',
			4 => 'tag-b',
		);

		$this->assertCount( 5, $posts );
		$this->assertEquals( $expected, wp_list_pluck( $posts, 'post_name' ) );
	}

	function test_query_offset() {
		$posts = $this->q->query('offset=2');

		$expected = array (
			0 => 'tags-a-and-b',
			1 => 'tag-c',
			2 => 'tag-b',
			3 => 'tag-a',
			4 => 'tags-a-b-c',
			5 => 'raw-html-code',
			6 => 'simple-markup-test',
			7 => 'embedded-video',
			8 => 'contributor-post-approved',
			9 => 'one-comment',
		);

		$this->assertCount( 10, $posts );
		$this->assertEquals( $expected, wp_list_pluck( $posts, 'post_name' ) );
	}

	function test_query_paged() {
		$posts = $this->q->query('paged=2');

		$expected = array (
			0 => 'contributor-post-approved',
			1 => 'one-comment',
			2 => 'no-comments',
			3 => 'many-trackbacks',
			4 => 'one-trackback',
			5 => 'comment-test',
			6 => 'lorem-ipsum',
			7 => 'cat-c',
			8 => 'cat-b',
			9 => 'cat-a',
		);

		$this->assertCount( 10, $posts );
		$this->assertTrue( $this->q->is_paged() );
		$this->assertEquals( $expected, wp_list_pluck( $posts, 'post_name' ) );
	}

	function test_query_paged_and_posts_per_page() {
		$posts = $this->q->query('paged=4&posts_per_page=4');

		$expected = array (
			0 => 'no-comments',
			1 => 'many-trackbacks',
			2 => 'one-trackback',
			3 => 'comment-test',
		);

		$this->assertCount( 4, $posts );
		$this->assertTrue( $this->q->is_paged() );
		$this->assertEquals( $expected, wp_list_pluck( $posts, 'post_name' ) );
	}

	/**
	 * @ticket 11056
	 */
	function test_query_post_parent__in() {
		// Query for first parent's children
		$posts = $this->q->query( array(
			'post_parent__in' => array( self::$parent_one ),
			'orderby' => 'date',
			'order' => 'asc',
		) );

		$this->assertEquals( array(
			'child-one',
			'child-two',
		), wp_list_pluck( $posts, 'post_title' ) );

		// Second parent's children
		$posts = $this->q->query( array(
			'post_parent__in' => array( self::$parent_two ),
			'orderby' => 'date',
			'order' => 'asc',
		) );

		$this->assertEquals( array(
			'child-three',
			'child-four',
		), wp_list_pluck( $posts, 'post_title' ) );

		// Both first and second parent's children
		$posts = $this->q->query( array(
			'post_parent__in' => array( self::$parent_one, self::$parent_two ),
			'orderby' => 'date',
			'order' => 'asc',
		) );

		$this->assertEquals( array(
			'child-one',
			'child-two',
			'child-three',
			'child-four',
		), wp_list_pluck( $posts, 'post_title' ) );

		// Third parent's children
		$posts = $this->q->query( array(
			'post_parent__in' => array( self::$parent_three ),
		) );

		$this->assertEquals( array(), wp_list_pluck( $posts, 'post_title' ) );
	}

	/**
	 * @ticket 11056
	 */
	function test_query_orderby_post_parent__in() {
		$posts = $this->q->query( array(
			'post_parent__in' => array( self::$parent_two, self::$parent_one ),
			'orderby' => 'post_parent__in',
			'order' => 'asc',
		) );

		$this->assertEquals( array(
			'child-three',
			'child-four',
			'child-one',
			'child-two',
		), wp_list_pluck( $posts, 'post_title' ) );
	}

	/**
	 * @ticket 39055
	 */
	function test_query_orderby_post_parent__in_with_order_desc() {
		$post_parent__in_array = array( self::$parent_two, self::$parent_one );
		$expected_returned_array = array( 'child-three', 'child-four', 'child-one', 'child-two' );

		$posts = $this->q->query( array(
			'post_parent__in' => $post_parent__in_array,
			'orderby'         => 'post_parent__in',
			'order'           => 'desc',
		) );

		// order=desc does not influence the order of returned results (returns same order as order=asc)
		$this->assertEquals( $expected_returned_array, wp_list_pluck( $posts, 'post_title' ) );
	}

	/**
	 * @ticket 39055
	 */
	function test_query_orderby_post__in_with_no_order_specified() {
		$post__in_array = array( self::$post_ids[2], self::$post_ids[0], self::$post_ids[1] );
		$expected_returned_array = array( self::$post_ids[2], self::$post_ids[0], self::$post_ids[1] );

		$q = new WP_Query( array(
			'post__in' => $post__in_array,
			'orderby'  => 'post__in',
			'fields'   => 'ids'
		) );

		// Expect post ids in the same order as post__in array when no 'order' param is passed in
		$this->assertSame( $expected_returned_array, $q->posts );
	}

	/**
	 * @ticket 39055
	 */
	function test_query_orderby_post__in_with_order_asc() {
		$post__in_array = array( self::$post_ids[2], self::$post_ids[0], self::$post_ids[1] );
		$expected_returned_array = array( self::$post_ids[2], self::$post_ids[0], self::$post_ids[1] );

		$q = new WP_Query( array(
			'post__in' => $post__in_array,
			'orderby'  => 'post__in',
			'order'    => 'asc',
			'fields'   => 'ids'
		) );

		// Expect post ids in the same order as post__in array when order=asc is passed in
		$this->assertSame( $expected_returned_array, $q->posts );
	 }

	/**
	 * @ticket 39055
	 */
	function test_query_orderby_post__in_with_order_desc() {
		$post__in_array = array( self::$post_ids[1], self::$post_ids[2], self::$post_ids[0] );
		$expected_returned_array = array( self::$post_ids[1], self::$post_ids[2], self::$post_ids[0] );

		$q = new WP_Query( array(
			'post__in' => $post__in_array,
			'orderby'  => 'post__in',
			'order'    => 'desc',
			'fields'   => 'ids'
		) );

		// Note that results are returned in the order specified in the post__in array
		// Order=desc does not have an effect on the order of returned results
		$this->assertSame( $expected_returned_array, $q->posts );
	}

	/**
	 * @ticket 39055
	 */
	function test_query_orderby_post_name__in_with_order_asc() {
		$post_name__in_array = array( 'parent-two', 'parent-one', 'parent-three' );

		$q = new WP_Query( array(
			'post_name__in' => $post_name__in_array,
			'orderby'       => 'post_name__in',
			'order'         => 'asc'
		) );

		$this->assertSame( $post_name__in_array, array_unique( wp_list_pluck( $q->posts, 'post_title' ) ) );
	}

	/**
	 * @ticket 39055
	 */
	function test_query_orderby_post_name__in_with_order_desc() {
		$post_name__in_array = array( 'parent-two', 'parent-one', 'parent-three' );

		$q = new WP_Query( array(
			'post_name__in' => $post_name__in_array,
			'orderby'       => 'post_name__in',
			'order'         => 'desc'
		) );

		// order=desc does not influence the order of returned results (returns same order as order=asc)
		$this->assertSame( $post_name__in_array, array_unique( wp_list_pluck( $q->posts, 'post_title' ) ) );
	}

	/**
	 * @ticket 27252
	 * @ticket 31194
	 */
	function test_query_fields_integers() {

		$parents = array(
			(int) self::$parent_one,
			(int) self::$parent_two
		);
		$posts1 = $this->q->query( array(
			'post__in'  => $parents,
			'fields'    => 'ids',
			'orderby'   => 'post__in',
		) );

		$this->assertSame( $parents, $posts1 );
		$this->assertSame( $parents, $this->q->posts );

		$children = array(
			(int) self::$child_one => (int) self::$parent_one,
			(int) self::$child_two => (int) self::$parent_one
		);

		$posts2 = $this->q->query( array(
			'post__in'  => array_keys( $children ),
			'fields'    => 'id=>parent',
			'orderby'   => 'post__in',
		) );

		$this->assertSame( $children, $posts2 );

		foreach ( $this->q->posts as $post ) {
			$this->assertInternalType( 'int', $post->ID );
			$this->assertInternalType( 'int', $post->post_parent );
		}

	}

	/**
	 * @ticket 28099
	 */
	function test_empty_post__in() {
		$posts1 = $this->q->query( array() );
		$this->assertNotEmpty( $posts1 );
		$posts2 = $this->q->query( array( 'post__in' => array() ) );
		$this->assertNotEmpty( $posts2 );
		$posts3 = $this->q->query( array( 'post_parent__in' => array() ) );
		$this->assertNotEmpty( $posts3 );
	}

	/**
	 * @ticket 19198
	 */
	function test_exclude_from_search_empty() {
		global $wp_post_types;
		foreach ( array_keys( $wp_post_types ) as $slug )
			$wp_post_types[$slug]->exclude_from_search = true;

		$posts = $this->q->query( array( 'post_type' => 'any' ) );

		$this->assertEmpty( $posts );
		$this->assertRegExp( '#AND 1=0#', $this->q->request );

		foreach ( array_keys( $wp_post_types ) as $slug )
			$wp_post_types[$slug]->exclude_from_search = false;

		$posts2 = $this->q->query( array( 'post_type' => 'any' ) );

		$this->assertNotEmpty( $posts2 );
		$this->assertNotRegExp( '#AND 1=0#', $this->q->request );
	}

	/**
	 * @ticket 16854
	 */
	function test_query_author_vars() {
		$author_1 = self::factory()->user->create( array( 'user_login' => 'author1', 'role' => 'author' ) );
		$post_1 = self::factory()->post->create( array( 'post_title' => 'Post 1', 'post_author' => $author_1, 'post_date' => '2007-01-01 00:00:00' ) );

		$author_2 = self::factory()->user->create( array( 'user_login' => 'author2', 'role' => 'author' ) );
		$post_2 = self::factory()->post->create( array( 'post_title' => 'Post 2', 'post_author' => $author_2, 'post_date' => '2007-01-01 00:00:00' ) );

		$author_3 = self::factory()->user->create( array( 'user_login' => 'author3', 'role' => 'author' ) );
		$post_3 = self::factory()->post->create( array( 'post_title' => 'Post 3', 'post_author' => $author_3, 'post_date' => '2007-01-01 00:00:00' ) );

		$author_4 = self::factory()->user->create( array( 'user_login' => 'author4', 'role' => 'author' ) );
		$post_4 = self::factory()->post->create( array( 'post_title' => 'Post 4', 'post_author' => $author_4, 'post_date' => '2007-01-01 00:00:00' ) );

		$posts = $this->q->query( array(
			'author' => '',
			'post__in' => array( $post_1, $post_2, $post_3, $post_4 )
		) );
		$author_ids = array_unique( wp_list_pluck( $posts, 'post_author' ) );
		$this->assertEqualSets( array( $author_1, $author_2, $author_3, $author_4 ), $author_ids );

		$posts = $this->q->query( array(
			'author' => 0,
			'post__in' => array( $post_1, $post_2, $post_3, $post_4 )
		) );
		$author_ids = array_unique( wp_list_pluck( $posts, 'post_author' ) );
		$this->assertEqualSets( array( $author_1, $author_2, $author_3, $author_4 ), $author_ids );

		$posts = $this->q->query( array(
			'author' => '0',
			'post__in' => array( $post_1, $post_2, $post_3, $post_4 )
		) );
		$author_ids = array_unique( wp_list_pluck( $posts, 'post_author' ) );
		$this->assertEqualSets( array( $author_1, $author_2, $author_3, $author_4 ), $author_ids );

		$posts = $this->q->query( array(
			'author' => $author_1,
			'post__in' => array( $post_1, $post_2, $post_3, $post_4 )
		) );
		$author_ids = array_unique( wp_list_pluck( $posts, 'post_author' ) );
		$this->assertEqualSets( array( $author_1 ), $author_ids );

		$posts = $this->q->query( array(
			'author' => "$author_1",
			'post__in' => array( $post_1, $post_2, $post_3, $post_4 )
		) );
		$author_ids = array_unique( wp_list_pluck( $posts, 'post_author' ) );
		$this->assertEqualSets( array( $author_1 ), $author_ids );

		$posts = $this->q->query( array(
			'author' => "{$author_1},{$author_2}",
			'post__in' => array( $post_1, $post_2, $post_3, $post_4 )
		) );
		$author_ids = array_unique( wp_list_pluck( $posts, 'post_author' ) );
		$this->assertEqualSets( array( $author_1, $author_2 ), $author_ids );

		$posts = $this->q->query( array(
			'author' => "-{$author_1},{$author_2}",
			'post__in' => array( $post_1, $post_2, $post_3, $post_4 )
		) );
		$author_ids = array_unique( wp_list_pluck( $posts, 'post_author' ) );
		$this->assertEqualSets( array( $author_2, $author_3, $author_4 ), $author_ids );

		$posts = $this->q->query( array(
			'author' => "{$author_1},-{$author_2}",
			'post__in' => array( $post_1, $post_2, $post_3, $post_4 )
		) );
		$author_ids = array_unique( wp_list_pluck( $posts, 'post_author' ) );
		$this->assertEqualSets( array( $author_1, $author_3, $author_4 ), $author_ids );

		$posts = $this->q->query( array(
			'author' => "-{$author_1},-{$author_2}",
			'post__in' => array( $post_1, $post_2, $post_3, $post_4 )
		) );
		$author_ids = array_unique( wp_list_pluck( $posts, 'post_author' ) );
		$this->assertEqualSets( array( $author_3, $author_4 ), $author_ids );

		$posts = $this->q->query( array(
			'author__in' => array( $author_1, $author_2 ),
			'post__in' => array( $post_1, $post_2, $post_3, $post_4 )
		) );
		$author_ids = array_unique( wp_list_pluck( $posts, 'post_author' ) );
		$this->assertEqualSets( array( $author_1, $author_2 ), $author_ids );

		$posts = $this->q->query( array( 'author__in' => array() ) );
		$this->assertNotEmpty( $posts );

		$posts = $this->q->query( array(
			'author__not_in' => array( $author_1, $author_2 ),
			'post__in' => array( $post_1, $post_2, $post_3, $post_4 )
		) );
		$author_ids = array_unique( wp_list_pluck( $posts, 'post_author' ) );
		$this->assertEqualSets( array( $author_3, $author_4 ), $author_ids );

		$posts = $this->q->query( array(
			'author_name' => 'author1',
			'post__in' => array( $post_1, $post_2, $post_3, $post_4 )
		) );
		$author_ids = array_unique( wp_list_pluck( $posts, 'post_author' ) );
		$this->assertEqualSets( array( $author_1 ), $author_ids );
	}

	/**
	 * @ticket 10935
	 */
	function test_query_is_date() {
		$this->q->query( array(
			'year' => '2007',
			'monthnum' => '01',
			'day' => '01',
		) );

		$this->assertTrue( $this->q->is_date );
		$this->assertTrue( $this->q->is_day );
		$this->assertFalse( $this->q->is_month );
		$this->assertFalse( $this->q->is_year );

		$this->q->query( array(
			'year' => '2007',
			'monthnum' => '01',
		) );

		$this->assertTrue( $this->q->is_date );
		$this->assertFalse( $this->q->is_day );
		$this->assertTrue( $this->q->is_month );
		$this->assertFalse( $this->q->is_year );

		$this->q->query( array(
			'year' => '2007',
		) );

		$this->assertTrue( $this->q->is_date );
		$this->assertFalse( $this->q->is_day );
		$this->assertFalse( $this->q->is_month );
		$this->assertTrue( $this->q->is_year );
	}

	/**
	 * @ticket 10935
	 * @expectedIncorrectUsage WP_Date_Query
	 */
	public function test_query_is_date_with_bad_date() {
		$this->q->query( array(
			'year' => '2007',
			'monthnum' => '01',
			'day' => '50',
		) );

		$this->assertTrue( $this->q->is_404 );
		$this->assertFalse( $this->q->is_date );
		$this->assertFalse( $this->q->is_day );
		$this->assertFalse( $this->q->is_month );
		$this->assertFalse( $this->q->is_year );
	}

	function test_perm_with_status_array() {
		global $wpdb;
		$this->q->query( array( 'perm' => 'readable', 'post_status' => array( 'publish', 'private' ) ) );
		$this->assertTrue( $this->q->have_posts() );
		$this->assertContains( "(({$wpdb->posts}.post_status = 'publish') OR ({$wpdb->posts}.post_author = 0 AND ({$wpdb->posts}.post_status = 'private')))",
			$this->q->request
		);
		$this->assertNotContains( "({$wpdb->posts}.post_status = 'publish') AND", $this->q->request );
	}

	/**
	 * @ticket 20308
	 */
	function test_post_password() {
		$one   = (string) self::factory()->post->create( array( 'post_password' => '' ) );
		$two   = (string) self::factory()->post->create( array( 'post_password' => 'burrito' ) );
		$three = (string) self::factory()->post->create( array( 'post_password' => 'burrito' ) );

		$args = array( 'post__in' => array( $one, $two, $three ), 'fields' => 'ids' );

		$result1 = $this->q->query( array_merge( $args, array( 'has_password' => true ) ) );
		$this->assertEqualSets( array( $two, $three ), $result1 );
		$result2 = $this->q->query( array_merge( $args, array( 'has_password' => false ) ) );
		$this->assertEquals( array( $one ), $result2 );

		// This is equivalent to not passing it at all.
		$result3 = $this->q->query( array_merge( $args, array( 'has_password' => null ) ) );
		$this->assertEqualSets( array( $one, $two, $three ), $result3 );

		// If both arguments are passed, only post_password is considered.
		$result4 = $this->q->query( array_merge( $args, array( 'has_password' => true, 'post_password' => '' ) ) );
		$this->assertEquals( array( $one ), $result4 );
		$result5 = $this->q->query( array_merge( $args, array( 'has_password' => false, 'post_password' => '' ) ) );
		$this->assertEquals( array( $one ), $result5 );
		$result6 = $this->q->query( array_merge( $args, array( 'has_password' => null, 'post_password' => '' ) ) );
		$this->assertEquals( array( $one ), $result6 );

		$result7 = $this->q->query( array_merge( $args, array( 'has_password' => true, 'post_password' => 'burrito' ) ) );
		$this->assertEqualSets( array( $two, $three ), $result7 );
		$result8 = $this->q->query( array_merge( $args, array( 'has_password' => false, 'post_password' => 'burrito' ) ) );
		$this->assertEqualSets( array( $two, $three ), $result8 );
		$result9 = $this->q->query( array_merge( $args, array( 'has_password' => null, 'post_password' => 'burrito' ) ) );
		$this->assertEqualSets( array( $two, $three ), $result9 );

		$result10 = $this->q->query( array_merge( $args, array( 'post_password' => '' ) ) );
		$this->assertEquals( array( $one ), $result10 );
		$result11 = $this->q->query( array_merge( $args, array( 'post_password' => 'burrito' ) ) );
		$this->assertEqualSets( array( $two, $three ), $result11 );
	}

	/**
	 * @ticket 28611
	 */
	function test_duplicate_slug_in_hierarchical_post_type() {
		register_post_type( 'handbook', array( 'hierarchical' => true ) );

		$post_1 = self::factory()->post->create( array( 'post_title' => 'Getting Started', 'post_type' => 'handbook' ) );
		$post_2 = self::factory()->post->create( array( 'post_title' => 'Contributing to the WordPress Codex', 'post_type' => 'handbook' ) );
		$post_3 = self::factory()->post->create( array( 'post_title' => 'Getting Started', 'post_parent' => $post_2, 'post_type' => 'handbook' ) );

		$result = $this->q->query( array( 'handbook' => 'getting-started', 'post_type' => 'handbook' ) );
		$this->assertCount( 1, $result );
	}

	/**
	 * @ticket 29615
	 */
	function test_child_post_in_hierarchical_post_type_with_default_permalinks() {
		register_post_type( 'handbook', array( 'hierarchical' => true ) );

		$post_1 = self::factory()->post->create( array( 'post_title' => 'Contributing to the WordPress Codex', 'post_type' => 'handbook' ) );
		$post_2 = self::factory()->post->create( array( 'post_title' => 'Getting Started', 'post_parent' => $post_1, 'post_type' => 'handbook' ) );

		$this->assertContains( 'contributing-to-the-wordpress-codex/getting-started', get_permalink( $post_2 ) );

		$result = $this->q->query( array( 'handbook' => 'contributing-to-the-wordpress-codex/getting-started', 'post_type' => 'handbook' ) );
		$this->assertCount( 1, $result );
	}

	function test_title() {
		$title = 'Tacos are Cool';
		$post_id = self::factory()->post->create( array(
			'post_title' => $title,
			'post_type' => 'post',
			'post_status' => 'publish'
		) );

		$result1 = $this->q->query( array( 'title' => $title, 'fields' => 'ids' ) );
		$this->assertCount( 1, $result1 );
		$this->assertContains( $post_id, $result1 );

		$result2 = $this->q->query( array( 'title' => 'Tacos', 'fields' => 'ids' ) );
		$this->assertCount( 0, $result2 );
	}

	/**
	 * @ticket 15610
	 */
	public function test_main_comments_feed_includes_attachment_comments() {
		$attachment_id = self::factory()->post->create( array( 'post_type' => 'attachment' ) );
		$comment_id = self::factory()->comment->create( array( 'comment_post_ID' => $attachment_id, 'comment_approved' => '1' ) );

		$this->q->query( array( 'withcomments' => 1, 'feed' => 'feed' ) );

		$this->assertTrue( $this->q->have_comments() );

		$feed_comment = $this->q->next_comment();
		$this->assertEquals( $comment_id, $feed_comment->comment_ID );
	}
}