added unit test for NO_EXECUTE toString method

Author: priyal13m

util/src/test/java/io/kubernetes/client/util/taints/TaintsTest.java

@@ -13,6 +13,7 @@
 package io.kubernetes.client.util.taints;
 
 import static io.kubernetes.client.util.taints.Taints.taints;
+import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertNotNull;
 import static org.junit.Assert.assertNull;
 
@@ -57,4 +58,13 @@ public void testRemoveTaints() {
     assertNotNull(Taints.findTaint(node, "key2", Taints.Effect.PREFER_NO_SCHEDULE));
     assertNotNull(Taints.findTaint(node, "key3", Taints.Effect.NO_SCHEDULE));
   }
+
+  @Test
+  public void testNoExecuteTaints(){
+    V1Node node = new V1Node();
+    String effect = "NoExecute";
+    taints(node)
+        .addTaint("key1", "value1", Taints.Effect.NO_EXECUTE);
+    assertEquals(effect,Taints.findTaint(node, "key1", Taints.Effect.NO_EXECUTE).getEffect());
+  }
 }