Add a SkyFunction to perform toolchain resolution.
Part of #2219.
Change-Id: I339009c13639144ca756eb07c520df7d430a64e3
PiperOrigin-RevId: 161826487
diff --git a/src/test/java/com/google/devtools/build/lib/skyframe/ToolchainResolutionFunctionTest.java b/src/test/java/com/google/devtools/build/lib/skyframe/ToolchainResolutionFunctionTest.java
new file mode 100644
index 0000000..88bc501
--- /dev/null
+++ b/src/test/java/com/google/devtools/build/lib/skyframe/ToolchainResolutionFunctionTest.java
@@ -0,0 +1,85 @@
+// 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.skyframe;
+
+import static com.google.common.truth.Truth.assertThat;
+import static com.google.devtools.build.skyframe.EvaluationResultSubjectFactory.assertThatEvaluationResult;
+
+import com.google.common.testing.EqualsTester;
+import com.google.devtools.build.lib.rules.platform.ToolchainTestCase;
+import com.google.devtools.build.lib.skyframe.util.SkyframeExecutorTestUtils;
+import com.google.devtools.build.skyframe.EvaluationResult;
+import com.google.devtools.build.skyframe.SkyKey;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.junit.runners.JUnit4;
+
+/** Tests for {@link ToolchainResolutionValue} and {@link ToolchainResolutionFunction}. */
+@RunWith(JUnit4.class)
+public class ToolchainResolutionFunctionTest extends ToolchainTestCase {
+
+ private EvaluationResult<ToolchainResolutionValue> invokeToolchainResolution(SkyKey key)
+ throws InterruptedException {
+ try {
+ getSkyframeExecutor().getSkyframeBuildView().enableAnalysis(true);
+ return SkyframeExecutorTestUtils.evaluate(
+ getSkyframeExecutor(), key, /*keepGoing=*/ false, reporter);
+ } finally {
+ getSkyframeExecutor().getSkyframeBuildView().enableAnalysis(false);
+ }
+ }
+
+ // TODO(katre): Current toolchain resolution does not actually check the constraints, it just
+ // returns the first toolchain available.
+ @Test
+ public void testResolution() throws Exception {
+ SkyKey key =
+ ToolchainResolutionValue.key(targetConfig, testToolchainType, targetPlatform, hostPlatform);
+ EvaluationResult<ToolchainResolutionValue> result = invokeToolchainResolution(key);
+
+ assertThatEvaluationResult(result).hasNoError();
+
+ ToolchainResolutionValue toolchainResolutionValue = result.get(key);
+ assertThat(toolchainResolutionValue.toolchainLabel())
+ .isEqualTo(makeLabel("//toolchain:test_toolchain_1"));
+ }
+
+ @Test
+ public void testResolution_noneFound() throws Exception {
+ // Clear the toolchains.
+ rewriteWorkspace();
+
+ SkyKey key =
+ ToolchainResolutionValue.key(targetConfig, testToolchainType, targetPlatform, hostPlatform);
+ EvaluationResult<ToolchainResolutionValue> result = invokeToolchainResolution(key);
+
+ assertThatEvaluationResult(result)
+ .hasErrorEntryForKeyThat(key)
+ .hasExceptionThat()
+ .hasMessageThat()
+ .contains("no matching toolchain found for //toolchain:test_toolchain");
+ }
+
+ @Test
+ public void testToolchainResolutionValue_equalsAndHashCode() {
+ new EqualsTester()
+ .addEqualityGroup(
+ ToolchainResolutionValue.create(makeLabel("//test:toolchain_impl_1")),
+ ToolchainResolutionValue.create(makeLabel("//test:toolchain_impl_1")))
+ .addEqualityGroup(
+ ToolchainResolutionValue.create(makeLabel("//test:toolchain_impl_2")),
+ ToolchainResolutionValue.create(makeLabel("//test:toolchain_impl_2")));
+ }
+}
