@Test
	public void testCloseProgram() {
		programMgr.closeProgram();
		ViewProviderService vps = provider.getCurrentViewProvider();
		assertNotNull(vps);
		assertEquals(DEFAULT_TREE_NAME, vps.getViewName());
		int index = tabbedPane.getSelectedIndex();
		assertEquals(DEFAULT_TREE_NAME, tabbedPane.getTitleAt(index));
		assertTrue(provider.getCurrentView().isEmpty());
	}
Test the view manager plugin that controls the view in the browser and the
program tree.
Ghidra/Features/Base/src/test.slow/java/ghidra/app/plugin/core/programtree/ViewManagerPluginTest.java