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- // Copyright (c) 2017 Google Inc.
- //
- // Licensed under the Apache License, Version 2.0 (the "License");
- // you may not use this file except in compliance with the License.
- // You may obtain a copy of the License at
- //
- // http://www.apache.org/licenses/LICENSE-2.0
- //
- // Unless required by applicable law or agreed to in writing, software
- // distributed under the License is distributed on an "AS IS" BASIS,
- // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- // See the License for the specific language governing permissions and
- // limitations under the License.
- #include <vector>
- #include "gmock/gmock.h"
- #include "source/util/bit_vector.h"
- namespace spvtools {
- namespace utils {
- namespace {
- using BitVectorTest = ::testing::Test;
- TEST(BitVectorTest, Initialize) {
- BitVector bvec;
- // Checks that all values are 0. Also tests checking a bit past the end of
- // the vector containing the bits.
- for (int i = 1; i < 10000; i *= 2) {
- EXPECT_FALSE(bvec.Get(i));
- }
- }
- TEST(BitVectorTest, Set) {
- BitVector bvec;
- // Since 10,000 is larger than the initial size, this tests the resizing
- // code.
- for (int i = 3; i < 10000; i *= 2) {
- bvec.Set(i);
- }
- // Check that bits that were not set are 0.
- for (int i = 1; i < 10000; i *= 2) {
- EXPECT_FALSE(bvec.Get(i));
- }
- // Check that bits that were set are 1.
- for (int i = 3; i < 10000; i *= 2) {
- EXPECT_TRUE(bvec.Get(i));
- }
- }
- TEST(BitVectorTest, SetReturnValue) {
- BitVector bvec;
- // Make sure |Set| returns false when the bit was not set.
- for (int i = 3; i < 10000; i *= 2) {
- EXPECT_FALSE(bvec.Set(i));
- }
- // Make sure |Set| returns true when the bit was already set.
- for (int i = 3; i < 10000; i *= 2) {
- EXPECT_TRUE(bvec.Set(i));
- }
- }
- TEST(BitVectorTest, Clear) {
- BitVector bvec;
- for (int i = 3; i < 10000; i *= 2) {
- bvec.Set(i);
- }
- // Check that the bits were properly set.
- for (int i = 3; i < 10000; i *= 2) {
- EXPECT_TRUE(bvec.Get(i));
- }
- // Clear all of the bits except for bit 3.
- for (int i = 6; i < 10000; i *= 2) {
- bvec.Clear(i);
- }
- // Make sure bit 3 was not cleared.
- EXPECT_TRUE(bvec.Get(3));
- // Make sure all of the other bits that were set have been cleared.
- for (int i = 6; i < 10000; i *= 2) {
- EXPECT_FALSE(bvec.Get(i));
- }
- }
- TEST(BitVectorTest, ClearReturnValue) {
- BitVector bvec;
- for (int i = 3; i < 10000; i *= 2) {
- bvec.Set(i);
- }
- // Make sure |Clear| returns true if the bit was set.
- for (int i = 3; i < 10000; i *= 2) {
- EXPECT_TRUE(bvec.Clear(i));
- }
- // Make sure |Clear| returns false if the bit was not set.
- for (int i = 3; i < 10000; i *= 2) {
- EXPECT_FALSE(bvec.Clear(i));
- }
- }
- TEST(BitVectorTest, SimpleOrTest) {
- BitVector bvec1;
- bvec1.Set(3);
- bvec1.Set(4);
- BitVector bvec2;
- bvec2.Set(2);
- bvec2.Set(4);
- // Check that |bvec1| changed when doing the |Or| operation.
- EXPECT_TRUE(bvec1.Or(bvec2));
- // Check that the values are all correct.
- EXPECT_FALSE(bvec1.Get(0));
- EXPECT_FALSE(bvec1.Get(1));
- EXPECT_TRUE(bvec1.Get(2));
- EXPECT_TRUE(bvec1.Get(3));
- EXPECT_TRUE(bvec1.Get(4));
- }
- TEST(BitVectorTest, ResizingOrTest) {
- BitVector bvec1;
- bvec1.Set(3);
- bvec1.Set(4);
- BitVector bvec2;
- bvec2.Set(10000);
- // Similar to above except with a large value to test resizing.
- EXPECT_TRUE(bvec1.Or(bvec2));
- EXPECT_FALSE(bvec1.Get(0));
- EXPECT_FALSE(bvec1.Get(1));
- EXPECT_FALSE(bvec1.Get(2));
- EXPECT_TRUE(bvec1.Get(3));
- EXPECT_TRUE(bvec1.Get(10000));
- }
- TEST(BitVectorTest, SubsetOrTest) {
- BitVector bvec1;
- bvec1.Set(3);
- bvec1.Set(4);
- BitVector bvec2;
- bvec2.Set(3);
- // |Or| returns false if |bvec1| does not change.
- EXPECT_FALSE(bvec1.Or(bvec2));
- }
- } // namespace
- } // namespace utils
- } // namespace spvtools
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