From “How to use Truth” http://google.github.io/truth/

String string = "awesome";
assertThat(string).startsWith("awe");
assertWithMessage("Without me, it's just aweso").that(string).contains("me");

Iterable<Color> googleColors = googleLogo.getColors();
assertThat(googleColors)

.containsExactly(BLUE, RED, YELLOW, BLUE, GREEN, RED) .inOrder();