/** Zest-To-Dot transformation for a graph with styled edges (dotted, etc). */
 @Test
 public void styledGraph() {
   testDotGeneration(DotTestUtils.getStyledGraph());
 }
 /** Zest-To-Dot transformation for a minimal directed graph. */
 @Test
 public void directedGraph() {
   testDotGeneration(DotTestUtils.getSimpleDiGraph());
 }
 /** Zest-To-Dot transformation for a graph with edge and node labels. */
 @Test
 public void labeledGraph() {
   testDotGeneration(DotTestUtils.getLabeledGraph());
 }
 /** Zest-To-Dot transformation for a minimal undirected graph. */
 @Test
 public void simpleGraph() {
   testDotGeneration(DotTestUtils.getSimpleGraph());
 }