/*
* Copyright (C) 2013 The Android Open Source Project
*
* 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.
*/
#define LOG_TAG "BitSet_test"
#include <utils/BitSet.h>
#include <cutils/log.h>
#include <gtest/gtest.h>
#include <unistd.h>
namespace android {
class BitSet32Test : public testing::Test {
protected:
BitSet32 b1;
BitSet32 b2;
virtual void TearDown() {
b1.clear();
b2.clear();
}
};
TEST_F(BitSet32Test, BitWiseOr) {
b1.markBit(2);
b2.markBit(4);
BitSet32 tmp = b1 | b2;
EXPECT_EQ(tmp.count(), 2u);
EXPECT_TRUE(tmp.hasBit(2) && tmp.hasBit(4));
// Check that the operator is symmetric
EXPECT_TRUE((b2 | b1) == (b1 | b2));
b1 |= b2;
EXPECT_EQ(b1.count(), 2u);
EXPECT_TRUE(b1.hasBit(2) && b1.hasBit(4));
EXPECT_TRUE(b2.hasBit(4) && b2.count() == 1u);
}
TEST_F(BitSet32Test, BitWiseAnd_Disjoint) {
b1.markBit(2);
b1.markBit(4);
b1.markBit(6);
BitSet32 tmp = b1 & b2;
EXPECT_TRUE(tmp.isEmpty());
// Check that the operator is symmetric
EXPECT_TRUE((b2 & b1) == (b1 & b2));
b2 &= b1;
EXPECT_TRUE(b2.isEmpty());
EXPECT_EQ(b1.count(), 3u);
EXPECT_TRUE(b1.hasBit(2) && b1.hasBit(4) && b1.hasBit(6));
}
TEST_F(BitSet32Test, BitWiseAnd_NonDisjoint) {
b1.markBit(2);
b1.markBit(4);
b1.markBit(6);
b2.markBit(3);
b2.markBit(6);
b2.markBit(9);
BitSet32 tmp = b1 & b2;
EXPECT_EQ(tmp.count(), 1u);
EXPECT_TRUE(tmp.hasBit(6));
// Check that the operator is symmetric
EXPECT_TRUE((b2 & b1) == (b1 & b2));
b1 &= b2;
EXPECT_EQ(b1.count(), 1u);
EXPECT_EQ(b2.count(), 3u);
EXPECT_TRUE(b2.hasBit(3) && b2.hasBit(6) && b2.hasBit(9));
}
TEST_F(BitSet32Test, MarkFirstUnmarkedBit) {
b1.markBit(1);
b1.markFirstUnmarkedBit();
EXPECT_EQ(b1.count(), 2u);
EXPECT_TRUE(b1.hasBit(0) && b1.hasBit(1));
b1.markFirstUnmarkedBit();
EXPECT_EQ(b1.count(), 3u);
EXPECT_TRUE(b1.hasBit(0) && b1.hasBit(1) && b1.hasBit(2));
}
TEST_F(BitSet32Test, ClearFirstMarkedBit) {
b1.markBit(0);
b1.markBit(10);
b1.clearFirstMarkedBit();
EXPECT_EQ(b1.count(), 1u);
EXPECT_TRUE(b1.hasBit(10));
b1.markBit(30);
b1.clearFirstMarkedBit();
EXPECT_EQ(b1.count(), 1u);
EXPECT_TRUE(b1.hasBit(30));
}
TEST_F(BitSet32Test, ClearLastMarkedBit) {
b1.markBit(10);
b1.markBit(31);
b1.clearLastMarkedBit();
EXPECT_EQ(b1.count(), 1u);
EXPECT_TRUE(b1.hasBit(10));
b1.markBit(5);
b1.clearLastMarkedBit();
EXPECT_EQ(b1.count(), 1u);
EXPECT_TRUE(b1.hasBit(5));
}
TEST_F(BitSet32Test, FillAndClear) {
EXPECT_TRUE(b1.isEmpty());
for (size_t i = 0; i < 32; i++) {
b1.markFirstUnmarkedBit();
}
EXPECT_TRUE(b1.isFull());
b1.clear();
EXPECT_TRUE(b1.isEmpty());
}
TEST_F(BitSet32Test, GetIndexOfBit) {
b1.markBit(1);
b1.markBit(4);
EXPECT_EQ(b1.getIndexOfBit(1), 0);
EXPECT_EQ(b1.getIndexOfBit(4), 1);
b1.markFirstUnmarkedBit();
EXPECT_EQ(b1.getIndexOfBit(1), 1);
EXPECT_EQ(b1.getIndexOfBit(4), 2);
}
class BitSet64Test : public testing::Test {
protected:
BitSet64 b1;
BitSet64 b2;
virtual void TearDown() {
b1.clear();
b2.clear();
}
};
TEST_F(BitSet64Test, BitWiseOr) {
b1.markBit(20);
b2.markBit(40);
BitSet64 tmp = b1 | b2;
EXPECT_EQ(tmp.count(), 2u);
EXPECT_TRUE(tmp.hasBit(20) && tmp.hasBit(40));
// Check that the operator is symmetric
EXPECT_TRUE((b2 | b1) == (b1 | b2));
b1 |= b2;
EXPECT_EQ(b1.count(), 2u);
EXPECT_TRUE(b1.hasBit(20) && b1.hasBit(40));
EXPECT_TRUE(b2.hasBit(40) && b2.count() == 1u);
}
TEST_F(BitSet64Test, BitWiseAnd_Disjoint) {
b1.markBit(20);
b1.markBit(40);
b1.markBit(60);
BitSet64 tmp = b1 & b2;
EXPECT_TRUE(tmp.isEmpty());
// Check that the operator is symmetric
EXPECT_TRUE((b2 & b1) == (b1 & b2));
b2 &= b1;
EXPECT_TRUE(b2.isEmpty());
EXPECT_EQ(b1.count(), 3u);
EXPECT_TRUE(b1.hasBit(20) && b1.hasBit(40) && b1.hasBit(60));
}
TEST_F(BitSet64Test, BitWiseAnd_NonDisjoint) {
b1.markBit(20);
b1.markBit(40);
b1.markBit(60);
b2.markBit(30);
b2.markBit(60);
b2.markBit(63);
BitSet64 tmp = b1 & b2;
EXPECT_EQ(tmp.count(), 1u);
EXPECT_TRUE(tmp.hasBit(60));
// Check that the operator is symmetric
EXPECT_TRUE((b2 & b1) == (b1 & b2));
b1 &= b2;
EXPECT_EQ(b1.count(), 1u);
EXPECT_EQ(b2.count(), 3u);
EXPECT_TRUE(b2.hasBit(30) && b2.hasBit(60) && b2.hasBit(63));
}
TEST_F(BitSet64Test, MarkFirstUnmarkedBit) {
b1.markBit(1);
b1.markFirstUnmarkedBit();
EXPECT_EQ(b1.count(), 2u);
EXPECT_TRUE(b1.hasBit(0) && b1.hasBit(1));
b1.markFirstUnmarkedBit();
EXPECT_EQ(b1.count(), 3u);
EXPECT_TRUE(b1.hasBit(0) && b1.hasBit(1) && b1.hasBit(2));
}
TEST_F(BitSet64Test, ClearFirstMarkedBit) {
b1.markBit(0);
b1.markBit(10);
b1.clearFirstMarkedBit();
EXPECT_EQ(b1.count(), 1u);
EXPECT_TRUE(b1.hasBit(10));
b1.markBit(50);
b1.clearFirstMarkedBit();
EXPECT_EQ(b1.count(), 1u);
EXPECT_TRUE(b1.hasBit(50));
}
TEST_F(BitSet64Test, ClearLastMarkedBit) {
b1.markBit(10);
b1.markBit(63);
b1.clearLastMarkedBit();
EXPECT_EQ(b1.count(), 1u);
EXPECT_TRUE(b1.hasBit(10));
b1.markBit(5);
b1.clearLastMarkedBit();
EXPECT_EQ(b1.count(), 1u);
EXPECT_TRUE(b1.hasBit(5));
}
TEST_F(BitSet64Test, FillAndClear) {
EXPECT_TRUE(b1.isEmpty());
for (size_t i = 0; i < 64; i++) {
b1.markFirstUnmarkedBit();
}
EXPECT_TRUE(b1.isFull());
b1.clear();
EXPECT_TRUE(b1.isEmpty());
}
TEST_F(BitSet64Test, GetIndexOfBit) {
b1.markBit(10);
b1.markBit(40);
EXPECT_EQ(b1.getIndexOfBit(10), 0);
EXPECT_EQ(b1.getIndexOfBit(40), 1);
b1.markFirstUnmarkedBit();
EXPECT_EQ(b1.getIndexOfBit(10), 1);
EXPECT_EQ(b1.getIndexOfBit(40), 2);
}
} // namespace android