Introduce option flag experimental_enable_tools_defaults_package.

Default value is true, and behavior related to //tools/defaults package is not
changed. If set it to false, then in-memory Dfaultpacked will not be created.

RELNOTES:none
PiperOrigin-RevId: 205643628

1 files changed, 77 insertions, 0 deletions

diff --git a/src/test/java/com/google/devtools/build/lib/analysis/EnableDefaultsPackageOptionTest.java b/src/test/java/com/google/devtools/build/lib/analysis/EnableDefaultsPackageOptionTest.java
new file mode 100644
index 0000000000..4e78aac17e
--- /dev/null
+++ b/src/test/java/com/google/devtools/build/lib/analysis/EnableDefaultsPackageOptionTest.java
@@ -0,0 +1,77 @@
+// Copyright 2018 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.analysis;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import com.google.devtools.build.lib.analysis.util.BuildViewTestCase;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.junit.runners.JUnit4;
+
+/**
+ * Test for experimental_enable_tools_defaults_package flag. TODO(dbabkin): remove after
+ * //tools/defaults package gone.
+ */
+@RunWith(JUnit4.class)
+public class EnableDefaultsPackageOptionTest extends BuildViewTestCase {
+
+  @Test
+  public void testEnableDefaultsPackageOptionWorks() throws Exception {
+    // do not need that as value is true by default.
+    // setPackageCacheOptions("--experimental_enable_tools_defaults_package=true");
+
+    ConfiguredTarget target = getConfiguredTarget("//tools/defaults:jdk");
+
+    assertThat(target.getLabel().toString()).isEqualTo("//tools/defaults:jdk");
+  }
+
+  @Test
+  public void testDisabledDefaultsPackageOptionWorks() throws Exception {
+
+    scratch.file(
+        "a/BUILD",
+        "filegroup(",
+        "  name = 'my_filegroup',",
+        "  srcs = ['//tools/defaults:jdk'],",
+        ")");
+
+    reporter.removeHandler(failFastHandler);
+    setPackageCacheOptions("--experimental_enable_tools_defaults_package=false");
+    ConfiguredTarget target = getConfiguredTarget("//a:my_filegroup");
+
+    assertThat(target).isNull();
+    assertContainsEvent(
+        "no such package 'tools/defaults': "
+            + "BUILD file not found on package path and referenced by '//a:my_filegroup'");
+  }
+
+  @Test
+  public void testFlipFlagOnFly() throws Exception {
+
+    setPackageCacheOptions("--experimental_enable_tools_defaults_package=false");
+    ConfiguredTarget defaultsJDKtarget = getConfiguredTarget("//tools/defaults:jdk");
+    assertThat(defaultsJDKtarget).isNull();
+
+    setPackageCacheOptions("--experimental_enable_tools_defaults_package=true");
+    defaultsJDKtarget = getConfiguredTarget("//tools/defaults:jdk");
+    assertThat(defaultsJDKtarget).isNotNull();
+    assertThat(defaultsJDKtarget.getLabel().toString()).isEqualTo("//tools/defaults:jdk");
+
+    setPackageCacheOptions("--experimental_enable_tools_defaults_package=false");
+    defaultsJDKtarget = getConfiguredTarget("//tools/defaults:jdk");
+    assertThat(defaultsJDKtarget).isNull();
+  }
+}