Refactor unit tests for the base library to use GTest.

test/base-unittests/cpu-unittest.cc

+// Copyright 2014 the V8 project 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 "src/base/cpu.h"

[tfarina, 2014/08/11 15:22:27]

do we need to separate this in a different directory?

In Chromium this would be src/base/cpu_unittest.cc, and Blink is also moving
torward this layout.

+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace v8 {
+namespace base {
+
+TEST(CPUTest, FeatureImplications) {
+  CPU cpu;
+
+  // ia32 and x64 features
+  EXPECT_TRUE(!cpu.has_sse() || cpu.has_mmx());
+  EXPECT_TRUE(!cpu.has_sse2() || cpu.has_sse());
+  EXPECT_TRUE(!cpu.has_sse3() || cpu.has_sse2());
+  EXPECT_TRUE(!cpu.has_ssse3() || cpu.has_sse3());
+  EXPECT_TRUE(!cpu.has_sse41() || cpu.has_sse3());
+  EXPECT_TRUE(!cpu.has_sse42() || cpu.has_sse41());
+
+  // arm features
+  EXPECT_TRUE(!cpu.has_vfp3_d32() || cpu.has_vfp3());
+}
+
+
+TEST(CPUTest, RequiredFeatures) {
+  CPU cpu;
+
+#if V8_HOST_ARCH_ARM
+  EXPECT_TRUE(cpu.has_fpu());
+#endif
+
+#if V8_HOST_ARCH_IA32
+  EXPECT_TRUE(cpu.has_fpu());
+  EXPECT_TRUE(cpu.has_sahf());
+#endif
+
+#if V8_HOST_ARCH_X64
+  EXPECT_TRUE(cpu.has_fpu());
+  EXPECT_TRUE(cpu.has_cmov());
+  EXPECT_TRUE(cpu.has_mmx());
+  EXPECT_TRUE(cpu.has_sse());
+  EXPECT_TRUE(cpu.has_sse2());
+#endif
+}
+
+}  // namespace base
+}  // namespace v8