@Test public void testToString() { ArrayTagSet ts1 = ArrayTagSet.create("k1", "v1"); ArrayTagSet ts2 = ArrayTagSet.create("k2", "v2").addAll(ts1); ArrayTagSet ts3 = ArrayTagSet.create("k3", "v3").addAll(ts2); Assertions.assertEquals(":k1=v1", ts1.toString()); Assertions.assertEquals(":k1=v1:k2=v2", ts2.toString()); Assertions.assertEquals(":k1=v1:k2=v2:k3=v3", ts3.toString()); }