CanvasAssertions.numLinesDrawn(htx, "#ff0000"),
CanvasAssertions.numLinesDrawn(htx, "#00ff00"),
CanvasAssertions.numLinesDrawn(htx, "#0000ff")];
CanvasAssertions.numLinesDrawn(htx, "#ff0000"),
CanvasAssertions.numLinesDrawn(htx, "#00ff00"),
CanvasAssertions.numLinesDrawn(htx, "#0000ff")];