@Test
	public void testMovingCaret_WhenFocused() {

		//
		// The field is wired to show the popup list as the user moves the caret around the
		// field.  
		//

		// use a string that allows us to move the caret and still have matches
		typeText("e123", true);

		closeMatchingWindow();

		setCaretPosition(1);
		assertMatchingWindowShowing();

		setCaretPosition(2);
		assertMatchingWindowShowing();
	}
This test achieves partial coverage of {@link DropDownTextField}.  Further coverage is
provided by {@link DropDownSelectionTextFieldTest}, as that test enables item selection 
in the widget being tested.
Ghidra/Framework/Docking/src/test/java/docking/widgets/DropDownTextFieldTest.java