1 files changed, 95 insertions, 0 deletions
diff --git a/src/test/java/com/google/devtools/build/lib/rules/objc/ObjcProtoProviderTest.java b/src/test/java/com/google/devtools/build/lib/rules/objc/ObjcProtoProviderTest.java
new file mode 100644
index 0000000000..031a9516bd
--- /dev/null
+++ b/src/test/java/com/google/devtools/build/lib/rules/objc/ObjcProtoProviderTest.java
@@ -0,0 +1,95 @@
+// Copyright 2017 The Bazel Authors. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package com.google.devtools.build.lib.rules.objc;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import com.google.common.collect.ImmutableList;
+import com.google.common.collect.Iterables;
+import com.google.devtools.build.lib.actions.Artifact;
+import com.google.devtools.build.lib.analysis.ConfiguredTarget;
+import com.google.devtools.build.lib.analysis.util.BuildViewTestCase;
+import com.google.devtools.build.lib.collect.nestedset.NestedSetBuilder;
+import com.google.devtools.build.lib.collect.nestedset.Order;
+import com.google.devtools.build.lib.vfs.PathFragment;
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.junit.runners.JUnit4;
+
+/** Unit tests for {@link ObjcProvider}. */
+@RunWith(JUnit4.class)
+public class ObjcProtoProviderTest extends BuildViewTestCase {
+
+  @Before
+  public final void setup() throws Exception {
+    // Empty target just so artifacts can be created.
+    scratch.file("x/BUILD",
+        "objc_library(",
+        "    name = 'x',",
+        ")");
+  }
+
+  @Test
+  public void emptyProvider() {
+    ObjcProtoProvider empty = new ObjcProtoProvider.Builder().build();
+    assertThat(empty.getProtoGroups()).isEmpty();
+  }
+
+  @Test
+  public void onlyPropagatesProvider() throws Exception {
+    Artifact foo = getTestArtifact("foo");
+    ObjcProtoProvider onlyPropagates =
+        new ObjcProtoProvider.Builder()
+            .addProtoGroup(NestedSetBuilder.<Artifact>create(Order.NAIVE_LINK_ORDER, foo))
+            .build();
+    assertThat(Iterables.concat(onlyPropagates.getProtoGroups())).containsExactly(foo);
+  }
+
+  @Test
+  public void propagatesThroughDependers() throws Exception {
+    Artifact foo = getTestArtifact("foo");
+    Artifact bar = getTestArtifact("bar");
+    Artifact baz = getTestArtifact("baz");
+    Artifact header = getTestArtifact("protobuf");
+    PathFragment searchPath = header.getExecPath().getParentDirectory();
+
+    ObjcProtoProvider base1 =
+        new ObjcProtoProvider.Builder()
+            .addProtoGroup(NestedSetBuilder.<Artifact>create(Order.NAIVE_LINK_ORDER, foo))
+            .addPortableProtoFilters(NestedSetBuilder.<Artifact>create(Order.STABLE_ORDER, baz))
+            .addProtobufHeaders(NestedSetBuilder.<Artifact>create(Order.STABLE_ORDER, header))
+            .build();
+
+    ObjcProtoProvider base2 =
+        new ObjcProtoProvider.Builder()
+            .addProtoGroup(NestedSetBuilder.<Artifact>create(Order.NAIVE_LINK_ORDER, bar))
+            .addProtobufHeaderSearchPaths(
+                NestedSetBuilder.<PathFragment>create(Order.LINK_ORDER, searchPath))
+            .build();
+
+    ObjcProtoProvider depender =
+        new ObjcProtoProvider.Builder().addTransitive(ImmutableList.of(base1, base2)).build();
+    assertThat(Iterables.concat(depender.getProtoGroups())).containsExactly(foo, bar);
+    assertThat(depender.getPortableProtoFilters()).containsExactly(baz);
+    assertThat(depender.getProtobufHeaders()).containsExactly(header);
+    assertThat(depender.getProtobufHeaderSearchPaths()).containsExactly(searchPath);
+  }
+
+  private Artifact getTestArtifact(String name) throws Exception {
+    ConfiguredTarget target = getConfiguredTarget("//x:x");
+    return getBinArtifact(name, target);
+  }
+}