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39 lines
1.2 KiB
C++
39 lines
1.2 KiB
C++
// Copyright (c) 2009 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// Tests for the bitfield helper class.
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#include "testing/gtest/include/gtest/gtest.h"
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#include "gpu/command_buffer/common/bitfield_helpers.h"
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namespace gpu {
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// Tests that BitField<>::Get returns the right bits.
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TEST(BitFieldTest, TestGet) {
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unsigned int value = 0x12345678u;
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EXPECT_EQ(0x8u, (BitField<0, 4>::Get(value)));
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EXPECT_EQ(0x45u, (BitField<12, 8>::Get(value)));
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EXPECT_EQ(0x12345678u, (BitField<0, 32>::Get(value)));
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}
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// Tests that BitField<>::MakeValue generates the right bits.
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TEST(BitFieldTest, TestMakeValue) {
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EXPECT_EQ(0x00000003u, (BitField<0, 4>::MakeValue(0x3)));
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EXPECT_EQ(0x00023000u, (BitField<12, 8>::MakeValue(0x123)));
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EXPECT_EQ(0x87654321u, (BitField<0, 32>::MakeValue(0x87654321)));
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}
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// Tests that BitField<>::Set modifies the right bits.
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TEST(BitFieldTest, TestSet) {
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unsigned int value = 0x12345678u;
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BitField<0, 4>::Set(&value, 0x9);
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EXPECT_EQ(0x12345679u, value);
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BitField<12, 8>::Set(&value, 0x123);
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EXPECT_EQ(0x12323679u, value);
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BitField<0, 32>::Set(&value, 0x87654321);
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EXPECT_EQ(0x87654321u, value);
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}
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} // namespace gpu
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