flags-unittest.cc 2.04 KB
Newer Older
1 2 3 4
// 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.

5
#include <stdint.h>
6 7 8 9 10 11 12 13 14 15 16 17 18 19
#include "src/base/flags.h"
#include "testing/gtest/include/gtest/gtest.h"

namespace v8 {
namespace base {

namespace {

enum Flag1 {
  kFlag1None = 0,
  kFlag1First = 1u << 1,
  kFlag1Second = 1u << 2,
  kFlag1All = kFlag1None | kFlag1First | kFlag1Second
};
20
typedef Flags<Flag1> Flags1;
21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63


DEFINE_OPERATORS_FOR_FLAGS(Flags1)


Flags1 bar(Flags1 flags1) { return flags1; }

}  // namespace


TEST(FlagsTest, BasicOperations) {
  Flags1 a;
  EXPECT_EQ(kFlag1None, static_cast<int>(a));
  a |= kFlag1First;
  EXPECT_EQ(kFlag1First, static_cast<int>(a));
  a = a | kFlag1Second;
  EXPECT_EQ(kFlag1All, static_cast<int>(a));
  a &= kFlag1Second;
  EXPECT_EQ(kFlag1Second, static_cast<int>(a));
  a = kFlag1None & a;
  EXPECT_EQ(kFlag1None, static_cast<int>(a));
  a ^= (kFlag1All | kFlag1None);
  EXPECT_EQ(kFlag1All, static_cast<int>(a));
  Flags1 b = ~a;
  EXPECT_EQ(kFlag1All, static_cast<int>(a));
  EXPECT_EQ(~static_cast<int>(a), static_cast<int>(b));
  Flags1 c = a;
  EXPECT_EQ(a, c);
  EXPECT_NE(a, b);
  EXPECT_EQ(a, bar(a));
  EXPECT_EQ(a, bar(kFlag1All));
}


namespace {
namespace foo {

enum Option {
  kNoOptions = 0,
  kOption1 = 1,
  kOption2 = 2,
  kAllOptions = kNoOptions | kOption1 | kOption2
};
64
typedef Flags<Option> Options;
65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85

}  // namespace foo


DEFINE_OPERATORS_FOR_FLAGS(foo::Options)

}  // namespace


TEST(FlagsTest, NamespaceScope) {
  foo::Options options;
  options ^= foo::kNoOptions;
  options |= foo::kOption1 | foo::kOption2;
  EXPECT_EQ(foo::kAllOptions, static_cast<int>(options));
}


namespace {

struct Foo {
  enum Enum { kEnum1 = 1, kEnum2 = 2 };
86
  typedef Flags<Enum, uint32_t> Enums;
87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104
};


DEFINE_OPERATORS_FOR_FLAGS(Foo::Enums)

}  // namespace


TEST(FlagsTest, ClassScope) {
  Foo::Enums enums;
  enums |= Foo::kEnum1;
  enums |= Foo::kEnum2;
  EXPECT_TRUE(enums & Foo::kEnum1);
  EXPECT_TRUE(enums & Foo::kEnum2);
}

}  // namespace base
}  // namespace v8