class NodeRevisionsTestCase

class NodeRevisionsTestCase extends DrupalWebTestCase {
    
    /**
     * Nodes used by the test.
     *
     * @var array
     */
    protected $nodes;
    
    /**
     * The revision messages for node revisions created in the test.
     *
     * @var array
     */
    protected $logs;
    public static function getInfo() {
        return array(
            'name' => 'Node revisions',
            'description' => 'Create a node with revisions and test viewing, saving, reverting, and deleting revisions.',
            'group' => 'Node',
        );
    }
    function setUp() {
        parent::setUp();
        // Create and login user.
        $web_user = $this->drupalCreateUser(array(
            'view revisions',
            'revert revisions',
            'edit any page content',
            'delete revisions',
            'delete any page content',
        ));
        $this->drupalLogin($web_user);
        // Create initial node.
        $node = $this->drupalCreateNode();
        $settings = get_object_vars($node);
        $settings['revision'] = 1;
        $nodes = array();
        $logs = array();
        // Get original node.
        $nodes[] = $node;
        // Create three revisions.
        $revision_count = 3;
        for ($i = 0; $i < $revision_count; $i++) {
            $logs[] = $settings['log'] = $this->randomName(32);
            // Create revision with random title and body and update variables.
            $this->drupalCreateNode($settings);
            $node = node_load($node->nid);
            // Make sure we get revision information.
            $settings = get_object_vars($node);
            $nodes[] = $node;
        }
        $this->nodes = $nodes;
        $this->logs = $logs;
    }
    
    /**
     * Checks node revision related operations.
     */
    function testRevisions() {
        $nodes = $this->nodes;
        $logs = $this->logs;
        // Get last node for simple checks.
        $node = $nodes[3];
        // Confirm the correct revision text appears on "view revisions" page.
        $this->drupalGet("node/{$node->nid}/revisions/{$node->vid}/view");
        $this->assertText($node->body[LANGUAGE_NONE][0]['value'], 'Correct text displays for version.');
        // Confirm the correct log message appears on "revisions overview" page.
        $this->drupalGet("node/{$node->nid}/revisions");
        foreach ($logs as $log) {
            $this->assertText($log, 'Log message found.');
        }
        // Confirm that revisions revert properly.
        $this->drupalPost("node/{$node->nid}/revisions/{$nodes[1]->vid}/revert", array(), t('Revert'));
        $this->assertRaw(t('@type %title has been reverted back to the revision from %revision-date.', array(
            '@type' => 'Basic page',
            '%title' => $nodes[1]->title,
            '%revision-date' => format_date($nodes[1]->revision_timestamp),
        )), 'Revision reverted.');
        $reverted_node = node_load($node->nid);
        $this->assertTrue($nodes[1]->body[LANGUAGE_NONE][0]['value'] == $reverted_node->body[LANGUAGE_NONE][0]['value'], 'Node reverted correctly.');
        // Confirm revisions delete properly.
        $this->drupalPost("node/{$node->nid}/revisions/{$nodes[1]->vid}/delete", array(), t('Delete'));
        $this->assertRaw(t('Revision from %revision-date of @type %title has been deleted.', array(
            '%revision-date' => format_date($nodes[1]->revision_timestamp),
            '@type' => 'Basic page',
            '%title' => $nodes[1]->title,
        )), 'Revision deleted.');
        $this->assertTrue(db_query('SELECT COUNT(vid) FROM {node_revision} WHERE nid = :nid and vid = :vid', array(
            ':nid' => $node->nid,
            ':vid' => $nodes[1]->vid,
        ))
            ->fetchField() == 0, 'Revision not found.');
    }
    
    /**
     * Checks that revisions are correctly saved without log messages.
     */
    function testNodeRevisionWithoutLogMessage() {
        // Create a node with an initial log message.
        $log = $this->randomName(10);
        $node = $this->drupalCreateNode(array(
            'log' => $log,
        ));
        // Save over the same revision and explicitly provide an empty log message
        // (for example, to mimic the case of a node form submitted with no text in
        // the "log message" field), and check that the original log message is
        // preserved.
        $new_title = $this->randomName(10) . 'testNodeRevisionWithoutLogMessage1';
        $updated_node = (object) array(
            'nid' => $node->nid,
            'vid' => $node->vid,
            'uid' => $node->uid,
            'type' => $node->type,
            'title' => $new_title,
            'log' => '',
        );
        node_save($updated_node);
        $this->drupalGet('node/' . $node->nid);
        $this->assertText($new_title, 'New node title appears on the page.');
        $node_revision = node_load($node->nid, NULL, TRUE);
        $this->assertEqual($node_revision->log, $log, 'After an existing node revision is re-saved without a log message, the original log message is preserved.');
        // Create another node with an initial log message.
        $node = $this->drupalCreateNode(array(
            'log' => $log,
        ));
        // Save a new node revision without providing a log message, and check that
        // this revision has an empty log message.
        $new_title = $this->randomName(10) . 'testNodeRevisionWithoutLogMessage2';
        $updated_node = (object) array(
            'nid' => $node->nid,
            'vid' => $node->vid,
            'uid' => $node->uid,
            'type' => $node->type,
            'title' => $new_title,
            'revision' => 1,
        );
        node_save($updated_node);
        $this->drupalGet('node/' . $node->nid);
        $this->assertText($new_title, 'New node title appears on the page.');
        $node_revision = node_load($node->nid, NULL, TRUE);
        $this->assertTrue(empty($node_revision->log), 'After a new node revision is saved with an empty log message, the log message for the node is empty.');
    }

}