public void testInstallUI() throws Exception {
Caret caret = jta.getCaret();
Highlighter highlighter = jta.getHighlighter();
String prefix = ((BasicTextUI) tf.getUI()).getPropertyPrefix();
(jta.getUI()).uninstallUI(jta);
TextUI ui = jta.getUI();
assertTrue(ui instanceof TextAreaUI);
TextAreaUI.callOrder = "";
(jta.getUI()).installUI(jta);
String tmp = TextAreaUI.callOrder;
tmp = findAndRemoveSubstring(tmp, "installUI::");