WP_Customize_Manager::set_autofocus PHP Method

    public function set_autofocus($autofocus)
    {
        $this->autofocus = array_filter(wp_array_slice_assoc($autofocus, array('panel', 'section', 'control')), 'is_string');
    }

	/**
	 * Test customize_pane_settings() method.
	 *
	 * @see WP_Customize_Manager::customize_pane_settings()
	 */
	function test_customize_pane_settings() {
		wp_set_current_user( self::factory()->user->create( array( 'role' => 'administrator' ) ) );
		$this->manager->register_controls();
		$this->manager->prepare_controls();
		$autofocus = array( 'control' => 'blogname' );
		$this->manager->set_autofocus( $autofocus );

		ob_start();
		$this->manager->customize_pane_settings();
		$content = ob_get_clean();

		$this->assertContains( 'var _wpCustomizeSettings =', $content );
		$this->assertContains( '"blogname"', $content );
		$this->assertContains( '_wpCustomizeSettings.controls', $content );
		$this->assertContains( '_wpCustomizeSettings.settings', $content );
		$this->assertContains( '</script>', $content );

		$this->assertNotEmpty( preg_match( '#var _wpCustomizeSettings\s*=\s*({.*?});\s*\n#', $content, $matches ) );
		$json = $matches[1];
		$data = json_decode( $json, true );
		$this->assertNotEmpty( $data );

		$this->assertEqualSets( array( 'theme', 'url', 'browser', 'panels', 'sections', 'nonce', 'autofocus', 'documentTitleTmpl', 'previewableDevices' ), array_keys( $data ) );
		$this->assertEquals( $autofocus, $data['autofocus'] );
		$this->assertArrayHasKey( 'save', $data['nonce'] );
		$this->assertArrayHasKey( 'preview', $data['nonce'] );
	}