Add gin, a lightweight bindings system for V8

gin/converter_unittest.cc

+// Copyright (c) 2013 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "gin/converter.h"
+
+#include <limits.h>
+
+#include "base/basictypes.h"
+#include "base/compiler_specific.h"
+#include "base/memory/scoped_ptr.h"
+#include "gin/test/v8_test.h"
+#include "testing/gtest/include/gtest/gtest.h"
+#include "v8/include/v8.h"
+
+using v8::Array;
+using v8::Boolean;
+using v8::Handle;
+using v8::HandleScope;
+using v8::Integer;
+using v8::Null;
+using v8::Number;
+using v8::Object;
+using v8::String;
+using v8::Undefined;
+using v8::Value;
+
+namespace gin {
+
+typedef V8Test ConverterTest;
+
+TEST_F(ConverterTest, Bool) {
+  HandleScope handle_scope(isolate_);
+
+  EXPECT_TRUE(Converter<bool>::ToV8(isolate_, true)->StrictEquals(
+      Boolean::New(true)));
+  EXPECT_TRUE(Converter<bool>::ToV8(isolate_, false)->StrictEquals(
+      Boolean::New(false)));
+
+  struct {
+    Handle<Value> input;
+    bool expected;
+  } test_data[] = {
+    { Boolean::New(false).As<Value>(), false },
+    { Boolean::New(true).As<Value>(), true },
+    { Number::New(0).As<Value>(), false },
+    { Number::New(1).As<Value>(), true },
+    { Number::New(-1).As<Value>(), true },
+    { Number::New(0.1).As<Value>(), true },
+    { String::New("").As<Value>(), false },
+    { String::New("foo").As<Value>(), true },
+    { Object::New().As<Value>(), true },
+    { Null().As<Value>(), false },
+    { Undefined().As<Value>(), false },
+  };
+
+  for (size_t i = 0; i < ARRAYSIZE_UNSAFE(test_data); ++i) {
+    bool result = false;
+    EXPECT_TRUE(Converter<bool>::FromV8(test_data[i].input, &result));
+    EXPECT_EQ(test_data[i].expected, result);
+
+    result = true;
+    EXPECT_TRUE(Converter<bool>::FromV8(test_data[i].input, &result));
+    EXPECT_EQ(test_data[i].expected, result);
+  }
+}
+
+TEST_F(ConverterTest, Int32) {
+  HandleScope handle_scope(isolate_);
+
+  int test_data_to[] = {-1, 0, 1};
+  for (size_t i = 0; i < ARRAYSIZE_UNSAFE(test_data_to); ++i) {
+    EXPECT_TRUE(Converter<int32_t>::ToV8(isolate_,
+        test_data_to[i])->StrictEquals(Integer::New(test_data_to[i])));
+  }
+
+  struct {
+    v8::Handle<v8::Value> input;
+    bool expect_sucess;
+    int expected_result;
+  } test_data_from[] = {
+    { Boolean::New(false).As<Value>(), false, 0 },
+    { Boolean::New(true).As<Value>(), false, 0 },
+    { Integer::New(-1).As<Value>(), true, -1 },
+    { Integer::New(0).As<Value>(), true, 0 },
+    { Integer::New(1).As<Value>(), true, 1 },
+    { Number::New(-1).As<Value>(), true, -1 },
+    { Number::New(1.1).As<Value>(), false, 0 },
+    { String::New("42").As<Value>(), false, 0 },
+    { String::New("foo").As<Value>(), false, 0 },
+    { Object::New().As<Value>(), false, 0 },
+    { Array::New().As<Value>(), false, 0 },
+    { v8::Null().As<Value>(), false, 0 },
+    { v8::Undefined().As<Value>(), false, 0 },
+  };
+
+  for (size_t i = 0; i < ARRAYSIZE_UNSAFE(test_data_from); ++i) {
+    int32_t result = std::numeric_limits<int32_t>::min();
+    bool success = Converter<int32_t>::FromV8(test_data_from[i].input, &result);
+    EXPECT_EQ(test_data_from[i].expect_sucess, success) << i;
+    if (success)
+      EXPECT_EQ(test_data_from[i].expected_result, result) << i;
+  }
+}
+
+TEST_F(ConverterTest, Vector) {
+  HandleScope handle_scope(isolate_);
+
+  std::vector<int> expected;
+  expected.push_back(-1);
+  expected.push_back(0);
+  expected.push_back(1);
+
+  Handle<Array> js_array = Handle<Array>::Cast(
+      Converter<std::vector<int> >::ToV8(isolate_, expected));
+  ASSERT_FALSE(js_array.IsEmpty());
+  EXPECT_EQ(3u, js_array->Length());
+  for (size_t i = 0; i < expected.size(); ++i) {
+    EXPECT_TRUE(Integer::New(expected[i])->StrictEquals(
+        js_array->Get(static_cast<int>(i))));
+  }
+
+  std::vector<int> actual;
+  EXPECT_TRUE(Converter<std::vector<int> >::FromV8(js_array, &actual));
+  EXPECT_EQ(expected, actual);
+}
+
+}  // namespace gin