private void selectTab(GTabPanel<Program> panel, Program pgm) {
		runSwing(() -> panel.selectTab(pgm));
		waitForSwing();
	}
Checks that the specified Diff action is in the indicated state and
causes a JUnit assert if not.

@param actionName the name of the DIff action.
@param inTool the action is currently added to the tool.
@param enabled the action is enabled.
Ghidra/Features/ProgramDiff/src/test.slow/java/ghidra/app/plugin/core/diff/DiffTest.java