1 files changed, 125 insertions, 0 deletions
diff --git a/src/test/java/com/google/devtools/build/lib/actions/ArtifactRootTest.java b/src/test/java/com/google/devtools/build/lib/actions/ArtifactRootTest.java
new file mode 100644
index 0000000000..dfe4e0789a
--- /dev/null
+++ b/src/test/java/com/google/devtools/build/lib/actions/ArtifactRootTest.java
@@ -0,0 +1,125 @@
+// Copyright 2015 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.actions;
+
+import static com.google.common.truth.Truth.assertThat;
+import static org.junit.Assert.fail;
+
+import com.google.common.testing.EqualsTester;
+import com.google.devtools.build.lib.testutil.Scratch;
+import com.google.devtools.build.lib.vfs.Path;
+import com.google.devtools.build.lib.vfs.PathFragment;
+import java.io.IOException;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.junit.runners.JUnit4;
+
+/** Tests for {@link ArtifactRoot}. */
+@RunWith(JUnit4.class)
+public class ArtifactRootTest {
+  private Scratch scratch = new Scratch();
+
+  @Test
+  public void testAsSourceRoot() throws IOException {
+    Path sourceDir = scratch.dir("/source");
+    ArtifactRoot root = ArtifactRoot.asSourceRoot(sourceDir);
+    assertThat(root.isSourceRoot()).isTrue();
+    assertThat(root.getExecPath()).isEqualTo(PathFragment.EMPTY_FRAGMENT);
+    assertThat(root.getPath()).isEqualTo(sourceDir);
+    assertThat(root.toString()).isEqualTo("/source[source]");
+  }
+
+  @Test
+  public void testBadAsSourceRoot() {
+    try {
+      ArtifactRoot.asSourceRoot(null);
+      fail();
+    } catch (NullPointerException expected) {
+    }
+  }
+
+  @Test
+  public void testAsDerivedRoot() throws IOException {
+    Path execRoot = scratch.dir("/exec");
+    Path rootDir = scratch.dir("/exec/root");
+    ArtifactRoot root = ArtifactRoot.asDerivedRoot(execRoot, rootDir);
+    assertThat(root.isSourceRoot()).isFalse();
+    assertThat(root.getExecPath()).isEqualTo(PathFragment.create("root"));
+    assertThat(root.getPath()).isEqualTo(rootDir);
+    assertThat(root.toString()).isEqualTo("/exec/root[derived]");
+  }
+
+  @Test
+  public void testBadAsDerivedRoot() throws IOException {
+    try {
+      Path execRoot = scratch.dir("/exec");
+      Path outsideDir = scratch.dir("/not_exec");
+      ArtifactRoot.asDerivedRoot(execRoot, outsideDir);
+      fail();
+    } catch (IllegalArgumentException expected) {
+    }
+  }
+
+  @Test
+  public void testBadAsDerivedRootSameForBoth() throws IOException {
+    try {
+      Path execRoot = scratch.dir("/exec");
+      ArtifactRoot.asDerivedRoot(execRoot, execRoot);
+      fail();
+    } catch (IllegalArgumentException expected) {
+    }
+  }
+
+  @Test
+  public void testBadAsDerivedRootNullDir() throws IOException {
+    try {
+      Path execRoot = scratch.dir("/exec");
+      ArtifactRoot.asDerivedRoot(execRoot, null);
+      fail();
+    } catch (NullPointerException expected) {
+    }
+  }
+
+  @Test
+  public void testBadAsDerivedRootNullExecRoot() throws IOException {
+    try {
+      Path execRoot = scratch.dir("/exec");
+      ArtifactRoot.asDerivedRoot(null, execRoot);
+      fail();
+    } catch (NullPointerException expected) {
+    }
+  }
+
+  @Test
+  public void testEquals() throws IOException {
+    Path execRoot = scratch.dir("/exec");
+    Path rootDir = scratch.dir("/exec/root");
+    Path otherRootDir = scratch.dir("/");
+    Path sourceDir = scratch.dir("/source");
+    ArtifactRoot rootA = ArtifactRoot.asDerivedRoot(execRoot, rootDir);
+    assertEqualsAndHashCode(true, rootA, ArtifactRoot.asDerivedRoot(execRoot, rootDir));
+    assertEqualsAndHashCode(false, rootA, ArtifactRoot.asSourceRoot(sourceDir));
+    assertEqualsAndHashCode(false, rootA, ArtifactRoot.asSourceRoot(rootDir));
+    assertEqualsAndHashCode(false, rootA, ArtifactRoot.asDerivedRoot(otherRootDir, rootDir));
+  }
+
+  public void assertEqualsAndHashCode(boolean expected, Object a, Object b) {
+    if (expected) {
+      new EqualsTester().addEqualityGroup(b, a).testEquals();
+    } else {
+      assertThat(a.equals(b)).isFalse();
+      assertThat(a.hashCode() == b.hashCode()).isFalse();
+    }
+  }
+}