Checks the node preview functionality, when using revisions.
function testPagePreviewWithRevisions() {
$langcode = LANGUAGE_NOT_SPECIFIED;
$title_key = "title";
$body_key = "body[{$langcode}][0][value]";
// Force revision on "Basic page" content.
variable_set('node_options_page', array(
'status',
'revision',
));
// Fill in node creation form and preview node.
$edit = array();
$edit[$title_key] = $this
->randomName(8);
$edit[$body_key] = $this
->randomName(16);
$edit['log'] = $this
->randomName(32);
$this
->drupalPost('node/add/page', $edit, t('Preview'));
// Check that the preview is displaying the title and body.
$this
->assertTitle(t('Preview | Drupal'), 'Basic page title is preview.');
$this
->assertText($edit[$title_key], 'Title displayed.');
$this
->assertText($edit[$body_key], 'Body displayed.');
// Check that the title and body fields are displayed with the correct values.
$this
->assertFieldByName($title_key, $edit[$title_key], 'Title field displayed.');
$this
->assertFieldByName($body_key, $edit[$body_key], 'Body field displayed.');
// Check that the log field has the correct value.
$this
->assertFieldByName('log', $edit['log'], 'Log field displayed.');
}