Add test for referring function name for classes.

R=mvstanton@chromium.org
BUG=v8:4333
LOG=N

Review URL: https://codereview.chromium.org/1264603002

Cr-Commit-Position: refs/heads/master@{#29922}

test/cctest/cctest.status

@@ -100,6 +100,10 @@
   # BUG(2340). Preprocessing stack traces is disabled at the moment.
   'test-heap/PreprocessStackTrace': [FAIL],
 
+  # BUG(4333). Function name inferrer does not work for ES6 clases.
+  'test-func-name-inference/UpperCaseClass': [FAIL],
+  'test-func-name-inference/LowerCaseClass': [FAIL],
+
   ##############################################################################
   # TurboFan compiler failures.
 

test/cctest/test-func-name-inference.cc

@@ -87,6 +87,8 @@ static void CheckFunctionName(v8::Handle<v8::Script> script,
   // Verify inferred function name.
   SmartArrayPointer<char> inferred_name =
       shared_func_info->inferred_name()->ToCString();
+  i::PrintF("expected: %s, found: %s\n", ref_inferred_name,
+            inferred_name.get());
   CHECK_EQ(0, strcmp(ref_inferred_name, inferred_name.get()));
 }
 
@@ -222,6 +224,44 @@ TEST(ObjectLiteral) {
 }
 
 
+TEST(UpperCaseClass) {
+  CcTest::InitializeVM();
+  v8::HandleScope scope(CcTest::isolate());
+
+  v8::Handle<v8::Script> script = Compile(CcTest::isolate(),
+                                          "'use strict';\n"
+                                          "class MyClass {\n"
+                                          "  constructor() {\n"
+                                          "    this.value = 1;\n"
+                                          "  }\n"
+                                          "  method() {\n"
+                                          "    this.value = 2;\n"
+                                          "  }\n"
+                                          "}");
+  CheckFunctionName(script, "this.value = 1", "MyClass");
+  CheckFunctionName(script, "this.value = 2", "MyClass.method");
+}
+
+
+TEST(LowerCaseClass) {
+  CcTest::InitializeVM();
+  v8::HandleScope scope(CcTest::isolate());
+
+  v8::Handle<v8::Script> script = Compile(CcTest::isolate(),
+                                          "'use strict';\n"
+                                          "class myclass {\n"
+                                          "  constructor() {\n"
+                                          "    this.value = 1;\n"
+                                          "  }\n"
+                                          "  method() {\n"
+                                          "    this.value = 2;\n"
+                                          "  }\n"
+                                          "}");
+  CheckFunctionName(script, "this.value = 1", "myclass");
+  CheckFunctionName(script, "this.value = 2", "myclass.method");
+}
+
+
 TEST(AsParameter) {
   CcTest::InitializeVM();
   v8::HandleScope scope(CcTest::isolate());