@Test
	public void testEdgeFocusMode_IN() {

		/*		  
		  		   v1
		           |
		 		   v2
				 / |
		        /  | 
		      v3   v4
		       \   |
		        \  |
		         - v5
		           |
		           |
		           v6		  
		  
		 */

		edge(1, 2);
		edge(2, 3);
		edge(2, 4);
		edge(3, 5);
		edge(4, 5);
		edge(5, 6);

		focusMode(PathHighlightMode.IN);

		focusVertex(v(1));
		assertNoEdgesInFocusedPath();

		focusVertex(v(6));
		assertAllEdgesInFocusedPath();
	}
A test meant to exercise most of the code paths inside of {@link VisualGraphPathHighlighter}.
These tests are not validating the actual correctness of the path calculation, as that work
is being done by the various graph algorithm tests.
Ghidra/Framework/Graph/src/test.slow/java/ghidra/graph/viewer/edge/VisualGraphPathHighlighterTest.java