1// Copyright (c) 2009 The Chromium Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5// Tests for the bitfield helper class.
6
7#include "testing/gtest/include/gtest/gtest.h"
8#include "gpu/command_buffer/common/bitfield_helpers.h"
9
10namespace gpu {
11
12// Tests that BitField<>::Get returns the right bits.
13TEST(BitFieldTest, TestGet) {
14  unsigned int value = 0x12345678u;
15  EXPECT_EQ(0x8u, (BitField<0, 4>::Get(value)));
16  EXPECT_EQ(0x45u, (BitField<12, 8>::Get(value)));
17  EXPECT_EQ(0x12345678u, (BitField<0, 32>::Get(value)));
18}
19
20// Tests that BitField<>::MakeValue generates the right bits.
21TEST(BitFieldTest, TestMakeValue) {
22  EXPECT_EQ(0x00000003u, (BitField<0, 4>::MakeValue(0x3)));
23  EXPECT_EQ(0x00023000u, (BitField<12, 8>::MakeValue(0x123)));
24  EXPECT_EQ(0x87654321u, (BitField<0, 32>::MakeValue(0x87654321)));
25}
26
27// Tests that BitField<>::Set modifies the right bits.
28TEST(BitFieldTest, TestSet) {
29  unsigned int value = 0x12345678u;
30  BitField<0, 4>::Set(&value, 0x9);
31  EXPECT_EQ(0x12345679u, value);
32  BitField<12, 8>::Set(&value, 0x123);
33  EXPECT_EQ(0x12323679u, value);
34  BitField<0, 32>::Set(&value, 0x87654321);
35  EXPECT_EQ(0x87654321u, value);
36}
37
38}  // namespace gpu
39