Test layout functionality as applies to pages.
function testPageLayout() {
// The layout-test page uses the layout_test_theme page layout.
$this
->drupalGet('layout-test');
$this
->assertText('Left side');
$this
->assertText('Right side');
$this
->assertRaw('<div class="layout-region layout-col-right">');
// Ensure the CSS was added.
$this
->assertRaw('@import url("' . url('', array(
'absolute' => TRUE,
)) . drupal_get_path('theme', 'layout_test_theme') . '/layouts/static/two-col/two-col.css');
}