---

Ajay Kannan · Ajay Kannan · commit 7ffb4e4e3302 · 2016-02-25T09:29:59.000-08:00
yaml --- r: 1727 b: refs/heads/master c: 08295ee h: refs/heads/master i: 1725: 53d2792 1723: d45c1b3 1719: 352147d 1711: 152369a 1695: 62f0149 1663: 95b4bf0
diff --git a/[refs] b/[refs]
@@ -1,5 +1,5 @@
 ---
-refs/heads/master: ee78b22a2656517681ab157aecd1667fdb384a4e
+refs/heads/master: 08295eeca633772ebab9dafab62aa2cc1e8ad627
 refs/heads/travis: e21ee7b88a5edc3f3d8c71f90c3fc32abf7e8dd6
 refs/heads/gh-pages: d1b373c30c176edc08692348167bec3a244bb823
 refs/heads/bigquery: 762fa5830e6c398c0396177e3e7fd243bd62cfc3
diff --git a/trunk/gcloud-java-core/src/main/java/com/google/gcloud/IamPolicy.java b/trunk/gcloud-java-core/src/main/java/com/google/gcloud/IamPolicy.java
@@ -58,6 +58,9 @@ public abstract static class Builder<R, B extends Builder<R, B>> {
     private String etag;
     private Integer version;
 
+    /**
+     * Constructor for IAM Policy builder.
+     */
     protected Builder() {}
 
     /**
@@ -73,6 +76,8 @@ public final B bindings(Map<R, Set<Identity>> bindings) {
 
     /**
      * Adds a binding to the policy.
+     *
+     * @throws IllegalArgumentException if the policy already contains a binding with the same role
      */
     public final B addBinding(R role, Set<Identity> identities) {
       checkArgument(!bindings.containsKey(role),
@@ -83,6 +88,8 @@ public final B addBinding(R role, Set<Identity> identities) {
 
     /**
      * Adds a binding to the policy.
+     *
+     * @throws IllegalArgumentException if the policy already contains a binding with the same role
      */
     public final B addBinding(R role, Identity first, Identity... others) {
       checkArgument(!bindings.containsKey(role),
@@ -104,8 +111,12 @@ public final B removeBinding(R role) {
 
     /**
      * Adds one or more identities to an existing binding.
+     *
+     * @throws IllegalArgumentException if the policy doesn't contain a binding with the specified
+     *     role
      */
     public final B addIdentity(R role, Identity first, Identity... others) {
+      checkArgument(bindings.containsKey(role), "The policy doesn't contain the specified role.");
       Set<Identity> identities = bindings.get(role);
       identities.add(first);
       identities.addAll(Arrays.asList(others));
@@ -114,8 +125,12 @@ public final B addIdentity(R role, Identity first, Identity... others) {
 
     /**
      * Removes one or more identities from an existing binding.
+     *
+     * @throws IllegalArgumentException if the policy doesn't contain a binding with the specified
+     *     role
      */
     public final B removeIdentity(R role, Identity first, Identity... others) {
+      checkArgument(bindings.containsKey(role), "The policy doesn't contain the specified role.");
       bindings.get(role).remove(first);
       bindings.get(role).removeAll(Arrays.asList(others));
       return self();
diff --git a/trunk/gcloud-java-core/src/test/java/com/google/gcloud/IdentityTest.java b/trunk/gcloud-java-core/src/test/java/com/google/gcloud/IdentityTest.java
@@ -18,7 +18,6 @@
 
 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertNull;
-import static org.junit.Assert.fail;
 
 import org.junit.Test;
 
@@ -48,48 +47,44 @@ public void testAllAuthenticatedUsers() {
   public void testUser() {
     assertEquals(Identity.Type.USER, USER.type());
     assertEquals("abc@gmail.com", USER.id());
-    try {
-      Identity.user(null);
-      fail("Should have thrown exception due to null email address.");
-    } catch (NullPointerException e) {
-      // expected
-    }
+  }
+
+  @Test(expected = NullPointerException.class)
+  public void testUserNullEmail() {
+    Identity.user(null);
   }
 
   @Test
   public void testServiceAccount() {
     assertEquals(Identity.Type.SERVICE_ACCOUNT, SERVICE_ACCOUNT.type());
     assertEquals("service-account@gmail.com", SERVICE_ACCOUNT.id());
-    try {
-      Identity.serviceAccount(null);
-      fail("Should have thrown exception due to null email address.");
-    } catch (NullPointerException e) {
-      // expected
-    }
+  }
+
+  @Test(expected = NullPointerException.class)
+  public void testServiceAccountNullEmail() {
+    Identity.serviceAccount(null);
   }
 
   @Test
   public void testGroup() {
     assertEquals(Identity.Type.GROUP, GROUP.type());
     assertEquals("group@gmail.com", GROUP.id());
-    try {
-      Identity.group(null);
-      fail("Should have thrown exception due to null email address.");
-    } catch (NullPointerException e) {
-      // expected
-    }
+  }
+
+  @Test(expected = NullPointerException.class)
+  public void testGroupNullEmail() {
+    Identity.group(null);
   }
 
   @Test
   public void testDomain() {
     assertEquals(Identity.Type.DOMAIN, DOMAIN.type());
     assertEquals("google.com", DOMAIN.id());
-    try {
-      Identity.domain(null);
-      fail("Should have thrown exception due to null domain.");
-    } catch (NullPointerException e) {
-      // expected
-    }
+  }
+
+  @Test(expected = NullPointerException.class)
+  public void testDomainNullId() {
+    Identity.domain(null);
   }
 
   @Test
