Ticket #57416: 57416.2.diff

src/wp-includes/class-wp-query.php

@@ -3283 +3283 @@
 
                 if ( null === $this->posts ) {
                         $split_the_query = (
+                                $q['posts_per_page'] != 1
+                                &&
                                 $is_unfiltered_query
                                 && (
                                         wp_using_ext_object_cache()

tests/phpunit/tests/post/getPosts.php

@@ -163 +163 @@
 
                 $this->assertSame( array( $p3 ), $found );
         }
+
+        public function test_one_post_per_page_no_split_query() {
+                $p1 = self::factory()->post->create(
+                        array(
+                                'post_date' => '2015-04-04 04:04:04',
+                        )
+                );
+                $p2 = self::factory()->post->create(
+                        array(
+                                'post_date' => '2014-04-04 04:04:04',
+                        )
+                );
+
+                add_filter( 'split_the_query', array( $this, 'filter_split_the_query_is_false' ) );
+
+                $found = get_posts(
+                        array(
+                                'posts_per_page' => 1,
+                        )
+                );
+
+                remove_filter( 'split_the_query', array( $this, 'filter_split_the_query_is_false' ) );
+        }
+
+        public function test_two_posts_per_page_split_query() {
+                $p1 = self::factory()->post->create(
+                        array(
+                                'post_date' => '2015-04-04 04:04:04',
+                        )
+                );
+                $p2 = self::factory()->post->create(
+                        array(
+                                'post_date' => '2014-04-04 04:04:04',
+                        )
+                );
+
+                add_filter( 'split_the_query', array( $this, 'filter_split_the_query_is_true' ) );
+
+                $found = get_posts(
+                        array(
+                                'posts_per_page' => 2,
+                        )
+                );
+
+                remove_filter( 'split_the_query', array( $this, 'filter_split_the_query_is_true' ) );
+        }
+
+        public function filter_split_the_query_is_false( $split_the_query_default ) {
+                $this->assertEquals( $split_the_query_default, false );
+        }
+
+        public function filter_split_the_query_is_true( $split_the_query_default ) {
+                $this->assertEquals( $split_the_query_default, true );
+        }
 }