cpp/src/gandiva/precompiled/bitmap_test.cc

// Licensed to the Apache Software Foundation (ASF) under one
// or more contributor license agreements.  See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership.  The ASF licenses this file
// to you 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 <gtest/gtest.h>
#include "gandiva/precompiled/types.h"

namespace gandiva {

TEST(TestBitMap, TestSimple) {
  static const int kNumBytes = 16;
  uint8_t bit_map[kNumBytes];
  memset(bit_map, 0, kNumBytes);

  EXPECT_EQ(bitMapGetBit(bit_map, 100), false);

  // set 100th bit and verify
  bitMapSetBit(bit_map, 100, true);
  EXPECT_EQ(bitMapGetBit(bit_map, 100), true);

  // clear 100th bit and verify
  bitMapSetBit(bit_map, 100, false);
  EXPECT_EQ(bitMapGetBit(bit_map, 100), false);
}

TEST(TestBitMap, TestClearIfFalse) {
  static const int kNumBytes = 32;
  uint8_t bit_map[kNumBytes];
  memset(bit_map, 0, kNumBytes);

  bitMapSetBit(bit_map, 24, true);

  // bit should remain unchanged.
  bitMapClearBitIfFalse(bit_map, 24, true);
  EXPECT_EQ(bitMapGetBit(bit_map, 24), true);

  // bit should be cleared.
  bitMapClearBitIfFalse(bit_map, 24, false);
  EXPECT_EQ(bitMapGetBit(bit_map, 24), false);

  // this function should have no impact if the bit is already clear.
  bitMapClearBitIfFalse(bit_map, 24, true);
  EXPECT_EQ(bitMapGetBit(bit_map, 24), false);

  bitMapClearBitIfFalse(bit_map, 24, false);
  EXPECT_EQ(bitMapGetBit(bit_map, 24), false);
}

}  // namespace gandiva