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Merge "cow_api_test: big replace op" into main

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Daniel Zheng 2024-03-22 21:48:13 +00:00 committed by Gerrit Code Review
commit 3326685511
1 changed files with 42 additions and 0 deletions
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fs_mgr/libsnapshot/libsnapshot_cow/test_v3.cpp
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@ -209,6 +209,48 @@ TEST_F(CowTestV3, ReplaceOp) {
ASSERT_EQ(sink, data);
}
TEST_F(CowTestV3, BigReplaceOp) {
CowOptions options;
options.op_count_max = 10000;
options.batch_write = true;
options.cluster_ops = 2048;
auto writer = CreateCowWriter(3, options, GetCowFd());
std::string data = "This is some data, believe it";
data.resize(options.block_size * 4096, '\0');
for (int i = 0; i < data.size(); i++) {
data[i] = static_cast<char>('A' + i / options.block_size);
}
ASSERT_TRUE(writer->AddRawBlocks(5, data.data(), data.size()));
ASSERT_TRUE(writer->Finalize());
CowReader reader;
ASSERT_TRUE(reader.Parse(cow_->fd));
const auto& header = reader.header_v3();
ASSERT_EQ(header.op_count, 4096);
auto iter = reader.GetOpIter();
ASSERT_NE(iter, nullptr);
ASSERT_FALSE(iter->AtEnd());
size_t i = 0;
while (!iter->AtEnd()) {
auto op = iter->Get();
std::string sink(options.block_size, '\0');
ASSERT_EQ(op->type(), kCowReplaceOp);
ASSERT_EQ(op->data_length, options.block_size);
ASSERT_EQ(op->new_block, 5 + i);
ASSERT_TRUE(ReadData(reader, op, sink.data(), options.block_size));
ASSERT_EQ(std::string_view(sink),
std::string_view(data).substr(i * options.block_size, options.block_size))
<< " readback data for " << i << "th block does not match";
iter->Next();
i++;
}
}
TEST_F(CowTestV3, ConsecutiveReplaceOp) {
CowOptions options;
options.op_count_max = 20;