Fix ProtoLangToolchainTest on Windows

Fix https://github.com/bazelbuild/bazel/issues/2082

RELNOTES:

--
MOS_MIGRATED_REVID=139307613

2 files changed, 4 insertions, 1 deletions

diff --git a/src/test/java/com/google/devtools/build/lib/BUILD b/src/test/java/com/google/devtools/build/lib/BUILD
index dd2b998d56..4e14f536be 100644
--- a/src/test/java/com/google/devtools/build/lib/BUILD
+++ b/src/test/java/com/google/devtools/build/lib/BUILD
@@ -1144,6 +1144,7 @@ java_test(
         ":analysis_testutil",
         "//src/main/java/com/google/devtools/build/lib:build-base",
         "//src/main/java/com/google/devtools/build/lib:proto-rules",
+        "//src/main/java/com/google/devtools/build/lib:util",
         "//src/main/java/com/google/devtools/build/lib/cmdline",
         "//third_party:guava",
         "//third_party:junit4",
diff --git a/src/test/java/com/google/devtools/build/lib/rules/proto/ProtoLangToolchainTest.java b/src/test/java/com/google/devtools/build/lib/rules/proto/ProtoLangToolchainTest.java
index afd43e3929..5bc6ce32ae 100644
--- a/src/test/java/com/google/devtools/build/lib/rules/proto/ProtoLangToolchainTest.java
+++ b/src/test/java/com/google/devtools/build/lib/rules/proto/ProtoLangToolchainTest.java
@@ -22,6 +22,8 @@ import com.google.common.eventbus.EventBus;
 import com.google.devtools.build.lib.analysis.TransitiveInfoCollection;
 import com.google.devtools.build.lib.analysis.util.BuildViewTestCase;
 import com.google.devtools.build.lib.cmdline.Label;
+import com.google.devtools.build.lib.util.OsUtils;
+
 import org.junit.Test;
 import org.junit.runner.RunWith;
 import org.junit.runners.JUnit4;
@@ -54,7 +56,7 @@ public class ProtoLangToolchainTest extends BuildViewTestCase {
 
     assertThat(toolchain.commandLine()).isEqualTo("cmd-line");
     assertThat(toolchain.pluginExecutable().getExecutable().getRootRelativePathString())
-        .isEqualTo("x/plugin");
+        .isEqualTo("x/plugin" + OsUtils.executableExtension());
 
     TransitiveInfoCollection runtimes = toolchain.runtime();
     assertThat(runtimes.getLabel()).isEqualTo(Label.parseAbsolute("//x:runtime"));