Open source some skyframe/bazel tests.

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MOS_MIGRATED_REVID=106308990
diff --git a/src/test/java/com/google/devtools/build/lib/skyframe/RecursivePkgKeyTest.java b/src/test/java/com/google/devtools/build/lib/skyframe/RecursivePkgKeyTest.java
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+++ b/src/test/java/com/google/devtools/build/lib/skyframe/RecursivePkgKeyTest.java
@@ -0,0 +1,81 @@
+// 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.skyframe;
+
+import com.google.common.collect.ImmutableSet;
+import com.google.devtools.build.lib.analysis.util.BuildViewTestCase;
+import com.google.devtools.build.lib.cmdline.PackageIdentifier;
+import com.google.devtools.build.lib.cmdline.PackageIdentifier.RepositoryName;
+import com.google.devtools.build.lib.skyframe.RecursivePkgValue.RecursivePkgKey;
+import com.google.devtools.build.lib.vfs.PathFragment;
+import com.google.devtools.build.lib.vfs.RootedPath;
+import com.google.devtools.build.skyframe.SkyKey;
+
+/** Tests for {@link RecursivePkgKey}. */
+public class RecursivePkgKeyTest extends BuildViewTestCase {
+
+  private SkyKey buildRecursivePkgKey(
+      RepositoryName repository,
+      PathFragment rootRelativePath,
+      ImmutableSet<PathFragment> excludedPaths) {
+    RootedPath rootedPath = RootedPath.toRootedPath(rootDirectory, rootRelativePath);
+    return RecursivePkgValue.key(repository, rootedPath, excludedPaths);
+  }
+
+  private void invalidHelper(
+      PathFragment rootRelativePath, ImmutableSet<PathFragment> excludedPaths) {
+    try {
+      buildRecursivePkgKey(
+          PackageIdentifier.DEFAULT_REPOSITORY_NAME, rootRelativePath, excludedPaths);
+      fail();
+    } catch (IllegalArgumentException expected) {
+    }
+  }
+
+  public void testValidRecursivePkgKeys() throws Exception {
+    buildRecursivePkgKey(
+        PackageIdentifier.DEFAULT_REPOSITORY_NAME,
+        new PathFragment(""),
+        ImmutableSet.<PathFragment>of());
+    buildRecursivePkgKey(
+        PackageIdentifier.DEFAULT_REPOSITORY_NAME,
+        new PathFragment(""),
+        ImmutableSet.of(new PathFragment("a")));
+
+    buildRecursivePkgKey(
+        PackageIdentifier.DEFAULT_REPOSITORY_NAME,
+        new PathFragment("a"),
+        ImmutableSet.<PathFragment>of());
+    buildRecursivePkgKey(
+        PackageIdentifier.DEFAULT_REPOSITORY_NAME,
+        new PathFragment("a"),
+        ImmutableSet.of(new PathFragment("a/b")));
+
+    buildRecursivePkgKey(
+        PackageIdentifier.DEFAULT_REPOSITORY_NAME,
+        new PathFragment("a/b"),
+        ImmutableSet.<PathFragment>of());
+    buildRecursivePkgKey(
+        PackageIdentifier.DEFAULT_REPOSITORY_NAME,
+        new PathFragment("a/b"),
+        ImmutableSet.of(new PathFragment("a/b/c")));
+  }
+
+  public void testInvalidRecursivePkgKeys() throws Exception {
+    invalidHelper(new PathFragment(""), ImmutableSet.of(new PathFragment("")));
+    invalidHelper(new PathFragment("a"), ImmutableSet.of(new PathFragment("a")));
+    invalidHelper(new PathFragment("a"), ImmutableSet.of(new PathFragment("b")));
+    invalidHelper(new PathFragment("a/b"), ImmutableSet.of(new PathFragment("a")));
+  }
+}