makes well-known packages and package classes consistent with each other

As discovered in https://groups.google.com/forum/#!topic/scala-user/RckXE90LoXo,
RootClass.sourceModule and EmptyPackageClass.sourceModule used to incorrectly
return NoSymbol instead of RootModule and EmptyPackage. This is now fixed.

1 files changed, 18 insertions, 0 deletions

diff --git a/test/junit/scala/reflect/internal/MirrorsTest.scala b/test/junit/scala/reflect/internal/MirrorsTest.scala
new file mode 100644
index 0000000000..9108af139f
--- /dev/null
+++ b/test/junit/scala/reflect/internal/MirrorsTest.scala
@@ -0,0 +1,18 @@
+package scala.reflect.internal
+
+import org.junit.Assert._
+import org.junit.Test
+import org.junit.runner.RunWith
+import org.junit.runners.JUnit4
+
+@RunWith(classOf[JUnit4])
+class MirrorsTest {
+  @Test def rootCompanionsAreConnected(): Unit = {
+    val cm = scala.reflect.runtime.currentMirror
+    import cm._
+    assertEquals("RootPackage.moduleClass == RootClass", RootClass, RootPackage.moduleClass)
+    assertEquals("RootClass.module == RootPackage", RootPackage, RootClass.module)
+    assertEquals("EmptyPackage.moduleClass == EmptyPackageClass", EmptyPackageClass, EmptyPackage.moduleClass)
+    assertEquals("EmptyPackageClass.module == EmptyPackage", EmptyPackage, EmptyPackageClass.module)
+  }
+}
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