Move unit tests to test/unittests.

src/base/bits-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 <limits>
-
-#include "src/base/bits.h"
-#include "src/base/macros.h"
-#include "testing/gtest-support.h"
-
-#ifdef DEBUG
-#define DISABLE_IN_RELEASE(Name) Name
-#else
-#define DISABLE_IN_RELEASE(Name) DISABLED_##Name
-#endif
-
-namespace v8 {
-namespace base {
-namespace bits {
-
-TEST(Bits, CountPopulation32) {
-  EXPECT_EQ(0u, CountPopulation32(0));
-  EXPECT_EQ(1u, CountPopulation32(1));
-  EXPECT_EQ(8u, CountPopulation32(0x11111111));
-  EXPECT_EQ(16u, CountPopulation32(0xf0f0f0f0));
-  EXPECT_EQ(24u, CountPopulation32(0xfff0f0ff));
-  EXPECT_EQ(32u, CountPopulation32(0xffffffff));
-}
-
-
-TEST(Bits, CountLeadingZeros32) {
-  EXPECT_EQ(32u, CountLeadingZeros32(0));
-  EXPECT_EQ(31u, CountLeadingZeros32(1));
-  TRACED_FORRANGE(uint32_t, shift, 0, 31) {
-    EXPECT_EQ(31u - shift, CountLeadingZeros32(1u << shift));
-  }
-  EXPECT_EQ(4u, CountLeadingZeros32(0x0f0f0f0f));
-}
-
-
-TEST(Bits, CountTrailingZeros32) {
-  EXPECT_EQ(32u, CountTrailingZeros32(0));
-  EXPECT_EQ(31u, CountTrailingZeros32(0x80000000));
-  TRACED_FORRANGE(uint32_t, shift, 0, 31) {
-    EXPECT_EQ(shift, CountTrailingZeros32(1u << shift));
-  }
-  EXPECT_EQ(4u, CountTrailingZeros32(0xf0f0f0f0));
-}
-
-
-TEST(Bits, IsPowerOfTwo32) {
-  EXPECT_FALSE(IsPowerOfTwo32(0U));
-  TRACED_FORRANGE(uint32_t, shift, 0, 31) {
-    EXPECT_TRUE(IsPowerOfTwo32(1U << shift));
-    EXPECT_FALSE(IsPowerOfTwo32((1U << shift) + 5U));
-    EXPECT_FALSE(IsPowerOfTwo32(~(1U << shift)));
-  }
-  TRACED_FORRANGE(uint32_t, shift, 2, 31) {
-    EXPECT_FALSE(IsPowerOfTwo32((1U << shift) - 1U));
-  }
-  EXPECT_FALSE(IsPowerOfTwo32(0xffffffff));
-}
-
-
-TEST(Bits, IsPowerOfTwo64) {
-  EXPECT_FALSE(IsPowerOfTwo64(0U));
-  TRACED_FORRANGE(uint32_t, shift, 0, 63) {
-    EXPECT_TRUE(IsPowerOfTwo64(V8_UINT64_C(1) << shift));
-    EXPECT_FALSE(IsPowerOfTwo64((V8_UINT64_C(1) << shift) + 5U));
-    EXPECT_FALSE(IsPowerOfTwo64(~(V8_UINT64_C(1) << shift)));
-  }
-  TRACED_FORRANGE(uint32_t, shift, 2, 63) {
-    EXPECT_FALSE(IsPowerOfTwo64((V8_UINT64_C(1) << shift) - 1U));
-  }
-  EXPECT_FALSE(IsPowerOfTwo64(V8_UINT64_C(0xffffffffffffffff)));
-}
-
-
-TEST(Bits, RoundUpToPowerOfTwo32) {
-  TRACED_FORRANGE(uint32_t, shift, 0, 31) {
-    EXPECT_EQ(1u << shift, RoundUpToPowerOfTwo32(1u << shift));
-  }
-  EXPECT_EQ(0u, RoundUpToPowerOfTwo32(0));
-  EXPECT_EQ(4u, RoundUpToPowerOfTwo32(3));
-  EXPECT_EQ(0x80000000u, RoundUpToPowerOfTwo32(0x7fffffffu));
-}
-
-
-TEST(BitsDeathTest, DISABLE_IN_RELEASE(RoundUpToPowerOfTwo32)) {
-  ASSERT_DEATH_IF_SUPPORTED({ RoundUpToPowerOfTwo32(0x80000001u); },
-                            "0x80000000");
-}
-
-
-TEST(Bits, RoundDownToPowerOfTwo32) {
-  TRACED_FORRANGE(uint32_t, shift, 0, 31) {
-    EXPECT_EQ(1u << shift, RoundDownToPowerOfTwo32(1u << shift));
-  }
-  EXPECT_EQ(0u, RoundDownToPowerOfTwo32(0));
-  EXPECT_EQ(4u, RoundDownToPowerOfTwo32(5));
-  EXPECT_EQ(0x80000000u, RoundDownToPowerOfTwo32(0x80000001u));
-}
-
-
-TEST(Bits, RotateRight32) {
-  TRACED_FORRANGE(uint32_t, shift, 0, 31) {
-    EXPECT_EQ(0u, RotateRight32(0u, shift));
-  }
-  EXPECT_EQ(1u, RotateRight32(1, 0));
-  EXPECT_EQ(1u, RotateRight32(2, 1));
-  EXPECT_EQ(0x80000000u, RotateRight32(1, 1));
-}
-
-
-TEST(Bits, RotateRight64) {
-  TRACED_FORRANGE(uint64_t, shift, 0, 63) {
-    EXPECT_EQ(0u, RotateRight64(0u, shift));
-  }
-  EXPECT_EQ(1u, RotateRight64(1, 0));
-  EXPECT_EQ(1u, RotateRight64(2, 1));
-  EXPECT_EQ(V8_UINT64_C(0x8000000000000000), RotateRight64(1, 1));
-}
-
-
-TEST(Bits, SignedAddOverflow32) {
-  int32_t val = 0;
-  EXPECT_FALSE(SignedAddOverflow32(0, 0, &val));
-  EXPECT_EQ(0, val);
-  EXPECT_TRUE(
-      SignedAddOverflow32(std::numeric_limits<int32_t>::max(), 1, &val));
-  EXPECT_EQ(std::numeric_limits<int32_t>::min(), val);
-  EXPECT_TRUE(
-      SignedAddOverflow32(std::numeric_limits<int32_t>::min(), -1, &val));
-  EXPECT_EQ(std::numeric_limits<int32_t>::max(), val);
-  EXPECT_TRUE(SignedAddOverflow32(std::numeric_limits<int32_t>::max(),
-                                  std::numeric_limits<int32_t>::max(), &val));
-  EXPECT_EQ(-2, val);
-  TRACED_FORRANGE(int32_t, i, 1, 50) {
-    TRACED_FORRANGE(int32_t, j, 1, i) {
-      EXPECT_FALSE(SignedAddOverflow32(i, j, &val));
-      EXPECT_EQ(i + j, val);
-    }
-  }
-}
-
-
-TEST(Bits, SignedSubOverflow32) {
-  int32_t val = 0;
-  EXPECT_FALSE(SignedSubOverflow32(0, 0, &val));
-  EXPECT_EQ(0, val);
-  EXPECT_TRUE(
-      SignedSubOverflow32(std::numeric_limits<int32_t>::min(), 1, &val));
-  EXPECT_EQ(std::numeric_limits<int32_t>::max(), val);
-  EXPECT_TRUE(
-      SignedSubOverflow32(std::numeric_limits<int32_t>::max(), -1, &val));
-  EXPECT_EQ(std::numeric_limits<int32_t>::min(), val);
-  TRACED_FORRANGE(int32_t, i, 1, 50) {
-    TRACED_FORRANGE(int32_t, j, 1, i) {
-      EXPECT_FALSE(SignedSubOverflow32(i, j, &val));
-      EXPECT_EQ(i - j, val);
-    }
-  }
-}
-
-}  // namespace bits
-}  // namespace base
-}  // namespace v8