Ticket #7392: revisions.php

<?php
/**
 * @group revisions
 */
class Tests_Revisions extends WP_UnitTestCase {

        /**
        * @ticket 7392
        */
        function test_revision_dont_save_revision_if_unchanged() {
                $post_id = $this->factory->post->create( array( 'post_title' => 'some-post', 'post_type' => 'post', 'post_content' => 'some_content' ) );

                wp_update_post( array( 'post_content'   => 'some updated content', 'ID' => $post_id ) );        //1st revision
                $this->assertEquals( 1, count( wp_get_post_revisions( $post_id ) ) ); //should be 1 revision so far

                //update the post
                wp_update_post( array( 'post_content'   => 'new update for some updated content', 'ID' => $post_id ) ); //2nd revision
                $this->assertEquals( 2, count( wp_get_post_revisions( $post_id ) ) ); //should be 2 revision so far

                //next try to save another identical update, tests for patch that prevents storing duplicates
                wp_update_post( array( 'post_content'   => 'new update for some updated content', 'ID' => $post_id ) ); //content unchanged, shouldn't save
                $this->assertEquals( 2, count( wp_get_post_revisions( $post_id ) ) ); //should still be 2 revision

                //next try to save another update, same content, but new ttile, should save revision
                wp_update_post( array( 'post_title' => 'some-post-changed', 'post_content'      => 'new update for some updated content', 'ID' => $post_id ) );
                $this->assertEquals( 3, count( wp_get_post_revisions( $post_id ) ) ); //should  be 3 revision

                //next try to save another identical update
                wp_update_post( array( 'post_title' => 'some-post-changed', 'post_content'      => 'new update for some updated content', 'ID' => $post_id ) ); //content unchanged, shouldn't save
                $this->assertEquals( 3, count( wp_get_post_revisions( $post_id ) ) ); //should still be 3 revision
        }
}