@Test
public void testHtmlVectorTracerWithAsciiFallback() throws IOException {

    Vector vec1 = makeRandomVector(1000);
    // Default color mapping.
    Tracer.showHtml(vec1, true);
    // Custom color mapping.
    Tracer.showHtml(vec1, COLOR_MAPPER, true);
    // Default color mapping with sorted vector.
    Tracer.showHtml(vec1.copy().sort(), true);
}