Add tests for FuncNameInferrer.

test/cctest/test-parsing.cc

Index: test/cctest/test-parsing.cc
diff --git a/test/cctest/test-parsing.cc b/test/cctest/test-parsing.cc
index 43f9d827ac6e93c69b1aa868396b08db12158ffd..370ff632797a688ca12e1c78531904198834fe26 100644
--- a/test/cctest/test-parsing.cc
+++ b/test/cctest/test-parsing.cc
@@ -2457,3 +2457,94 @@ TEST(InvalidLeftHandSide) {
   RunParserSyncTest(postfix_context_data, good_statement_data, kSuccess);
   RunParserSyncTest(postfix_context_data, bad_statement_data_common, kError);
 }
+
+
+TEST(FuncNameInferrerBasic) {
+  // Tests that function names are inferred properly.
+  i::FLAG_allow_natives_syntax = true;
+  v8::Isolate* isolate = CcTest::isolate();
+  v8::HandleScope scope(isolate);
+  LocalContext env;
+  CompileRun("var foo1 = function() {}; "
+             "var foo2 = function foo3() {}; "
+             "function lazy_not_ctor() { "
+             "  var foo3 = function() {}; "
+             "  return %FunctionGetInferredName(foo3); "
+             "} "
+             "function not_lazy_not_ctor() { "

[rossberg, 2014/06/03 13:48:46]

How does this differ from the previous?

[marja, 2014/06/03 14:16:35]

Oops yes, this was supposed to be forcibly non-lazy (function foo(){}())();
*but* I cannot anyway make lazy functions work in this test case (laziness is
not allowed if natives syntax is allowed), so I removed this case.

+             "  var foo4 = function() {}; "
+             "  return %FunctionGetInferredName(foo4); "
+             "} "
+             "function Ctor() { "
+             "  var foo5 = function() {}; "
+             "  return %FunctionGetInferredName(foo5); "
+             "} "
+             "var obj1 = { foo6: function() {} }; "
+             "var obj2 = { 'foo7': function() {} }; "
+             "var obj3 = {}; "
+             "obj3[1] = function() {}; "
+             "var obj4 = {}; "
+             "obj4[1] = function bar() {}; "
+             "var obj5 = {}; "
+             "obj5['foo8'] = function() {}; "
+             "var obj6 = { obj7 : { foo9: function() {} } };");
+  ExpectString("%FunctionGetInferredName(foo1)", "foo1");
+  // foo2 is not unnamed -> its name is not inferred.
+  ExpectString("%FunctionGetInferredName(foo2)", "");
+  ExpectString("lazy_not_ctor()", "foo3");
+  ExpectString("not_lazy_not_ctor()", "foo4");
+  ExpectString("Ctor()", "Ctor.foo5");

[rossberg, 2014/06/03 13:48:46]

Wow...

+  ExpectString("%FunctionGetInferredName(obj1.foo6)", "obj1.foo6");
+  ExpectString("%FunctionGetInferredName(obj2.foo7)", "obj2.foo7");
+  ExpectString("%FunctionGetInferredName(obj3[1])",
+               "obj3.(anonymous function)");
+  ExpectString("%FunctionGetInferredName(obj4[1])", "");
+  ExpectString("%FunctionGetInferredName(obj5['foo8'])", "obj5.foo8");
+  ExpectString("%FunctionGetInferredName(obj6.obj7.foo9)", "obj6.obj7.foo9");
+}
+
+
+TEST(FuncNameInferrerTwoByte) {
+  // Tests function name inferring in cases where some parts of the inferred
+  // function name are two-byte strings.
+  i::FLAG_allow_natives_syntax = true;
+  v8::Isolate* isolate = CcTest::isolate();
+  v8::HandleScope scope(isolate);
+  LocalContext env;
+  uint16_t* two_byte_source = AsciiToTwoByteString(
+      "var obj1 = { oXj2 : { foo1: function() {} } }; "
+      "%FunctionGetInferredName(obj1.oXj2.foo1)");
+  uint16_t* two_byte_name = AsciiToTwoByteString("obj1.oXj2.foo1");
+  // Make it really non-ascii (replace the Xs with a non-ASCII character).
+  two_byte_source[14] = two_byte_source[78] = two_byte_name[6] = 0x010d;
+  v8::Local<v8::String> source =
+      v8::String::NewFromTwoByte(isolate, two_byte_source);
+  v8::Local<v8::Value> result = CompileRun(source);
+  CHECK(result->IsString());
+  v8::Local<v8::String> expected_name =
+      v8::String::NewFromTwoByte(isolate, two_byte_name);
+  CHECK(result->Equals(expected_name));
+}
+
+
+TEST(FuncNameInferrerEscaped) {
+  // The same as FuncNameInferrerTwoByte, except that we express the two-byte
+  // character as a unicode escape.
+  i::FLAG_allow_natives_syntax = true;
+  v8::Isolate* isolate = CcTest::isolate();
+  v8::HandleScope scope(isolate);
+  LocalContext env;
+  uint16_t* two_byte_source = AsciiToTwoByteString(
+      "var obj1 = { o\\u010dj2 : { foo1: function() {} } }; "
+      "%FunctionGetInferredName(obj1.o\\u010dj2.foo1)");
+  uint16_t* two_byte_name = AsciiToTwoByteString("obj1.oXj2.foo1");
+  // Fix to correspond to the non-ASCII name in two_byte_source.
+  two_byte_name[6] = 0x010d;
+  v8::Local<v8::String> source =
+      v8::String::NewFromTwoByte(isolate, two_byte_source);
+  v8::Local<v8::Value> result = CompileRun(source);
+  CHECK(result->IsString());
+  v8::Local<v8::String> expected_name =
+      v8::String::NewFromTwoByte(isolate, two_byte_name);
+  CHECK(result->Equals(expected_name));
+}