Expose v8::Function::GetDisplayName to public API.

test/cctest/test-api.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 17393 matching lines @@
   v8::ScriptOrigin origin = v8::ScriptOrigin(v8::String::New("test"));
   v8::Handle<v8::String> script = v8::String::New(
       "var foo = { bar : { baz : function() {}}}; var f = foo.bar.baz;");
   v8::Script::Compile(script, &origin)->Run();
   v8::Local<v8::Function> f = v8::Local<v8::Function>::Cast(
       env->Global()->Get(v8::String::New("f")));
   CHECK_EQ("foo.bar.baz", *v8::String::Utf8Value(f->GetInferredName()));
 }
 
 
+THREADED_TEST(FunctionGetDisplayName) {
+  LocalContext env;
+  v8::HandleScope scope(env->GetIsolate());
+  const char* code = "var error = false;"
+                     "function a() { this.x = 1; };"
+                     "a.displayName = 'display_a';"
+                     "var b = (function() {"
+                     "  var f = function() { this.x = 2; };"
+                     "  f.displayName = 'display_b';"
+                     "  return f;"
+                     "})();"
+                     "var c = function() {};"
+                     "c.__defineGetter__('displayName', function() {"
+                     "  error = true;"
+                     "  throw new Error();"
+                     "});"
+                     "function d() {};"
+                     "d.__defineGetter__('displayName', function() {"
+                     "  error = true;"
+                     "  return 'wrong_display_name';"
+                     "});"
+                     "function e() {};"
+                     "e.displayName = 'wrong_display_name';"
+                     "e.__defineSetter__('displayName', function() {"
+                     "  error = true;"
+                     "  throw new Error();"
+                     "});"
+                     "function f() {};"
+                     "f.displayName = { 'foo': 6, toString: function() {"
+                     "  error = true;"
+                     "  return 'wrong_display_name';"
+                     "}};"
+                     "var g = function() {"
+                     "  arguments.callee.displayName = 'set_in_runtime';"
+                     "}; g();"
+                     ;
+  v8::ScriptOrigin origin = v8::ScriptOrigin(v8::String::New("test"));
+  v8::Script::Compile(v8::String::New(code), &origin)->Run();
+  v8::Local<v8::Value> error = env->Global()->Get(v8::String::New("error"));
+  v8::Local<v8::Function> a = v8::Local<v8::Function>::Cast(
+      env->Global()->Get(v8::String::New("a")));
+  v8::Local<v8::Function> b = v8::Local<v8::Function>::Cast(
+      env->Global()->Get(v8::String::New("b")));
+  v8::Local<v8::Function> c = v8::Local<v8::Function>::Cast(
+      env->Global()->Get(v8::String::New("c")));
+  v8::Local<v8::Function> d = v8::Local<v8::Function>::Cast(
+      env->Global()->Get(v8::String::New("d")));
+  v8::Local<v8::Function> e = v8::Local<v8::Function>::Cast(
+      env->Global()->Get(v8::String::New("e")));
+  v8::Local<v8::Function> f = v8::Local<v8::Function>::Cast(
+      env->Global()->Get(v8::String::New("f")));
+  v8::Local<v8::Function> g = v8::Local<v8::Function>::Cast(
+      env->Global()->Get(v8::String::New("g")));
+  CHECK_EQ(false, error->BooleanValue());
+  CHECK_EQ("display_a", *v8::String::Utf8Value(a->GetDisplayName()));
+  CHECK_EQ("display_b", *v8::String::Utf8Value(b->GetDisplayName()));
+  CHECK_EQ(NULL, *v8::String::Utf8Value(c->GetDisplayName()));
+  CHECK_EQ(NULL, *v8::String::Utf8Value(d->GetDisplayName()));
+  CHECK_EQ(NULL, *v8::String::Utf8Value(e->GetDisplayName()));
+  CHECK_EQ(NULL, *v8::String::Utf8Value(f->GetDisplayName()));
+  CHECK_EQ("set_in_runtime", *v8::String::Utf8Value(g->GetDisplayName()));
+}
+
+
 THREADED_TEST(ScriptLineNumber) {
   LocalContext env;
   v8::HandleScope scope(env->GetIsolate());
   v8::ScriptOrigin origin = v8::ScriptOrigin(v8::String::New("test"));
   v8::Handle<v8::String> script = v8::String::New(
       "function f() {}\n\nfunction g() {}");
   v8::Script::Compile(script, &origin)->Run();
   v8::Local<v8::Function> f = v8::Local<v8::Function>::Cast(
       env->Global()->Get(v8::String::New("f")));
   v8::Local<v8::Function> g = v8::Local<v8::Function>::Cast(
@@ skipping 3113 matching lines @@
   }
   for (int i = 0; i < runs; i++) {
     Local<String> expected;
     if (i != 0) {
       CHECK_EQ(v8_str("escape value"), values[i]);
     } else {
       CHECK(values[i].IsEmpty());
     }
   }
 }