88 lines
2.2 KiB
C++
88 lines
2.2 KiB
C++
/*
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* Copyright (C) 2013 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#define LOG_TAG "BitSet_test"
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#include <utils/BitSet.h>
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#include <cutils/log.h>
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#include <gtest/gtest.h>
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#include <unistd.h>
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namespace android {
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class BitSetTest : public testing::Test {
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protected:
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BitSet32 b1;
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BitSet32 b2;
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virtual void TearDown() {
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b1.clear();
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b2.clear();
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}
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};
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TEST_F(BitSetTest, BitWiseOr) {
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b1.markBit(2);
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b2.markBit(4);
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BitSet32 tmp = b1 | b2;
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EXPECT_EQ(tmp.count(), 2u);
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EXPECT_TRUE(tmp.hasBit(2) && tmp.hasBit(4));
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// Check that the operator is symmetric
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EXPECT_TRUE((b2 | b1) == (b1 | b2));
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b1 |= b2;
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EXPECT_EQ(b1.count(), 2u);
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EXPECT_TRUE(b1.hasBit(2) && b1.hasBit(4));
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EXPECT_TRUE(b2.hasBit(4) && b2.count() == 1u);
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}
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TEST_F(BitSetTest, BitWiseAnd_Disjoint) {
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b1.markBit(2);
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b1.markBit(4);
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b1.markBit(6);
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BitSet32 tmp = b1 & b2;
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EXPECT_TRUE(tmp.isEmpty());
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// Check that the operator is symmetric
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EXPECT_TRUE((b2 & b1) == (b1 & b2));
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b2 &= b1;
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EXPECT_TRUE(b2.isEmpty());
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EXPECT_EQ(b1.count(), 3u);
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EXPECT_TRUE(b1.hasBit(2) && b1.hasBit(4) && b1.hasBit(6));
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}
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TEST_F(BitSetTest, BitWiseAnd_NonDisjoint) {
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b1.markBit(2);
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b1.markBit(4);
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b1.markBit(6);
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b2.markBit(3);
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b2.markBit(6);
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b2.markBit(9);
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BitSet32 tmp = b1 & b2;
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EXPECT_EQ(tmp.count(), 1u);
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EXPECT_TRUE(tmp.hasBit(6));
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// Check that the operator is symmetric
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EXPECT_TRUE((b2 & b1) == (b1 & b2));
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b1 &= b2;
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EXPECT_EQ(b1.count(), 1u);
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EXPECT_EQ(b2.count(), 3u);
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EXPECT_TRUE(b2.hasBit(3) && b2.hasBit(6) && b2.hasBit(9));
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}
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} // namespace android
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