[LibTooling] Fix broken test after r359574.

r359574 changed the way that failures are reported, which broke the test TransformerTest.NodePartNameDeclRefFailure which detects a faiure.

llvm-svn: 359578
diff --git a/clang/unittests/Tooling/TransformerTest.cpp b/clang/unittests/Tooling/TransformerTest.cpp
index 774184d..e07d9b7 100644
--- a/clang/unittests/Tooling/TransformerTest.cpp
+++ b/clang/unittests/Tooling/TransformerTest.cpp
@@ -251,9 +251,11 @@
   )cc";
 
   StringRef Ref = "ref";
-  testRule(makeRule(declRefExpr(to(functionDecl())).bind(Ref),
-                    change<clang::Expr>(Ref, NodePart::Name, "good")),
-           Input, Input);
+  Transformer T(makeRule(declRefExpr(to(functionDecl())).bind(Ref),
+                         change<clang::Expr>(Ref, NodePart::Name, "good")),
+                consumer());
+  T.registerMatchers(&MatchFinder);
+  EXPECT_FALSE(rewrite(Input));
 }
 
 TEST_F(TransformerTest, NodePartMember) {