Properly use test name for test libraries, with updated test.

Signed-off-by: Edward Z. Yang <ezyang@cs.stanford.edu>

Cabal/Distribution/Simple/Build.hs

@@ -407,7 +407,7 @@ testSuiteLibV09AsLibAndExe pkg_descr
     libClbi = LibComponentLocalBuildInfo
                 { componentPackageDeps = componentPackageDeps clbi
                 , componentPackageRenaming = componentPackageRenaming clbi
-                , componentLibraryName = LibraryName "test"
+                , componentLibraryName = LibraryName (testName test)
                 , componentExposedModules = [IPI.ExposedModule m Nothing Nothing]
                 , componentPackageKey = OldPackageKey (PackageIdentifier (PackageName (testName test)) (pkgVersion (package pkg_descr)))
                 }

Cabal/tests/PackageTests/BuildTestSuiteDetailedV09/Check.hs

@@ -16,3 +16,5 @@ suite config = do
     assertConfigureSucceeded confResult
     buildResult <- cabal_build config spec
     assertBuildSucceeded buildResult
+    testResult <- cabal_test config spec [] ["test-Dummy", "test-Dummy2"]
+    assertTestSucceeded testResult

Cabal/tests/PackageTests/BuildTestSuiteDetailedV09/Dummy2.hs

+module Dummy2 where
+
+import Distribution.TestSuite (Test)
+
+tests :: IO [Test]
+tests = return []

Cabal/tests/PackageTests/BuildTestSuiteDetailedV09/my.cabal

@@ -18,3 +18,8 @@ test-suite test-Dummy
   type:       detailed-0.9
   test-module: Dummy
   build-depends: base, Cabal
+
+test-suite test-Dummy2
+  type:       detailed-0.9
+  test-module: Dummy2
+  build-depends: base, Cabal