Required toolchains set on rule classes are inherited.

PiperOrigin-RevId: 164281027

1 files changed, 18 insertions, 0 deletions

diff --git a/src/test/java/com/google/devtools/build/lib/packages/RuleClassBuilderTest.java b/src/test/java/com/google/devtools/build/lib/packages/RuleClassBuilderTest.java
index b93fe6c836..1545f5635f 100644
--- a/src/test/java/com/google/devtools/build/lib/packages/RuleClassBuilderTest.java
+++ b/src/test/java/com/google/devtools/build/lib/packages/RuleClassBuilderTest.java
@@ -21,6 +21,8 @@ import static com.google.devtools.build.lib.syntax.Type.STRING;
 import static com.google.devtools.build.lib.syntax.Type.STRING_LIST;
 import static org.junit.Assert.fail;
 
+import com.google.common.collect.ImmutableList;
+import com.google.devtools.build.lib.cmdline.Label;
 import com.google.devtools.build.lib.packages.RuleClass.Builder.RuleClassType;
 import com.google.devtools.build.lib.packages.util.PackageLoadingTestCase;
 import org.junit.Test;
@@ -188,4 +190,20 @@ public class RuleClassBuilderTest extends PackageLoadingTestCase {
       // Expected exception.
     }
   }
+
+  @Test
+  public void testRequiredToolchainsAreInherited() throws Exception {
+    Label mockToolchainType = Label.parseAbsoluteUnchecked("//mock_toolchain_type");
+    RuleClass parent =
+        new RuleClass.Builder("$parent", RuleClassType.ABSTRACT, false)
+            .add(attr("tags", STRING_LIST))
+            .addRequiredToolchains(ImmutableList.of(mockToolchainType))
+            .build();
+    RuleClass child =
+        new RuleClass.Builder("child", RuleClassType.NORMAL, false, parent)
+            .factory(DUMMY_CONFIGURED_TARGET_FACTORY)
+            .add(attr("attr", STRING))
+            .build();
+    assertThat(child.getRequiredToolchains()).contains(mockToolchainType);
+  }
 }