libs/androidfw/tests/ByteBucketArray_test.cpp

/*
 * Copyright (C) 2014 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.
 */

#include "androidfw/ByteBucketArray.h"

#include "gtest/gtest.h"

namespace android {

TEST(ByteBucketArrayTest, TestSparseInsertion) {
  ByteBucketArray<int> bba;
  ASSERT_TRUE(bba.set(0, 1));
  ASSERT_TRUE(bba.set(10, 2));
  ASSERT_TRUE(bba.set(26, 3));
  ASSERT_TRUE(bba.set(129, 4));
  ASSERT_TRUE(bba.set(234, 5));

  for (size_t i = 0; i < bba.size(); i++) {
    switch (i) {
      case 0:
        EXPECT_EQ(1, bba[i]);
        break;
      case 10:
        EXPECT_EQ(2, bba[i]);
        break;
      case 26:
        EXPECT_EQ(3, bba[i]);
        break;
      case 129:
        EXPECT_EQ(4, bba[i]);
        break;
      case 234:
        EXPECT_EQ(5, bba[i]);
        break;
      default:
        EXPECT_EQ(0, bba[i]);
        break;
    }
  }
}

TEST(ByteBucketArrayTest, TestForEach) {
  ByteBucketArray<int> bba;
  ASSERT_TRUE(bba.set(0, 1));
  ASSERT_TRUE(bba.set(10, 2));
  ASSERT_TRUE(bba.set(26, 3));
  ASSERT_TRUE(bba.set(129, 4));
  ASSERT_TRUE(bba.set(234, 5));

  int count = 0;
  bba.forEachItem([&count](auto i, auto val) {
    ++count;
    switch (i) {
      case 0:
        EXPECT_EQ(1, val);
        break;
      case 10:
        EXPECT_EQ(2, val);
        break;
      case 26:
        EXPECT_EQ(3, val);
        break;
      case 129:
        EXPECT_EQ(4, val);
        break;
      case 234:
        EXPECT_EQ(5, val);
        break;
      default:
        EXPECT_EQ(0, val);
        break;
    }
  });
  ASSERT_EQ(4 * 16, count);
}

TEST(ByteBucketArrayTest, TestTrimBuckets) {
  ByteBucketArray<int> bba;
  ASSERT_TRUE(bba.set(0, 1));
  ASSERT_TRUE(bba.set(255, 2));
  {
    bba.trimBuckets([](auto val) { return val < 2; });
    int count = 0;
    bba.forEachItem([&count](auto, auto) { ++count; });
    ASSERT_EQ(1 * 16, count);
  }
  {
    bba.trimBuckets([](auto val) { return val < 3; });
    int count = 0;
    bba.forEachItem([&count](auto, auto) { ++count; });
    ASSERT_EQ(0, count);
  }
}

}  // namespace android