private void assertPopupsShown(AbstractTestVertex v, int n) {
		List<SpyTooltip> tooltips = swing(() -> tooltipSpy.getShownTooltips(v));
		assertEquals(n, tooltips.size());
	}
Finds a point which intersects the given edge and does not intersect any vertex.

@param e the edge
@return the point
Ghidra/Framework/Graph/src/test.slow/java/ghidra/graph/viewer/GraphViewerTest.java