Function TestSkipping

be/src/util/bit-stream-utils-test.cc:97–122

// against a reader that doesn't skip.
template <typename T>
void TestSkipping(const uint8_t* buffer, const int len, const int bit_width,
    const int skip_at, const int skip_count) {
  constexpr int MAX_LEN = 512;
  DCHECK_LE(len, MAX_LEN);
  DCHECK_EQ((skip_at * bit_width) % 8, 0);
  DCHECK_EQ((skip_count * bit_width) % 8, 0);
  int value_count = len * 8 / bit_width;

  T all_vals[MAX_LEN];
  BatchedBitReader expected_reader(buffer, len);
  expected_reader.UnpackBatch(bit_width, value_count, all_vals);

  BatchedBitReader skipping_reader(buffer, len);
  T vals[MAX_LEN];
  skipping_reader.UnpackBatch(bit_width, skip_at, vals);
  bool skipped = skipping_reader.SkipBatch(bit_width, skip_count);
  ASSERT_TRUE(skipped);
  skipping_reader.UnpackBatch(bit_width, value_count - skip_count, vals + skip_at);

  for (int i = 0; i < skip_at; ++i) {
    EXPECT_EQ(all_vals[i], vals[i]);
  }
  for (int i = skip_at + skip_count; i < len; ++i) {
    EXPECT_EQ(all_vals[i], vals[i - skip_count]);
  }
}

TEST(BitArray, TestBoolSkip) {
  const int len = 4;