cpp/src/parquet/properties_test.cc

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// to you under the Apache License, Version 2.0 (the
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// with the License.  You may obtain a copy of the License at
//
//   http://www.apache.org/licenses/LICENSE-2.0
//
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// specific language governing permissions and limitations
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#include <gtest/gtest.h>

#include <string>

#include "arrow/buffer.h"
#include "arrow/io/memory.h"

#include "parquet/file_reader.h"
#include "parquet/properties.h"

namespace parquet {

using schema::ColumnPath;

namespace test {

TEST(TestReaderProperties, Basics) {
  ReaderProperties props;

  ASSERT_EQ(props.buffer_size(), kDefaultBufferSize);
  ASSERT_FALSE(props.is_buffered_stream_enabled());
}

TEST(TestWriterProperties, Basics) {
  std::shared_ptr<WriterProperties> props = WriterProperties::Builder().build();

  ASSERT_EQ(kDefaultDataPageSize, props->data_pagesize());
  ASSERT_EQ(DEFAULT_DICTIONARY_PAGE_SIZE_LIMIT, props->dictionary_pagesize_limit());
  ASSERT_EQ(ParquetVersion::PARQUET_1_0, props->version());
  ASSERT_EQ(ParquetDataPageVersion::V1, props->data_page_version());
}

TEST(TestWriterProperties, AdvancedHandling) {
  WriterProperties::Builder builder;
  builder.compression("gzip", Compression::GZIP);
  builder.compression("zstd", Compression::ZSTD);
  builder.compression(Compression::SNAPPY);
  builder.encoding(Encoding::DELTA_BINARY_PACKED);
  builder.encoding("delta-length", Encoding::DELTA_LENGTH_BYTE_ARRAY);
  builder.data_page_version(ParquetDataPageVersion::V2);
  std::shared_ptr<WriterProperties> props = builder.build();

  ASSERT_EQ(Compression::GZIP, props->compression(ColumnPath::FromDotString("gzip")));
  ASSERT_EQ(Compression::ZSTD, props->compression(ColumnPath::FromDotString("zstd")));
  ASSERT_EQ(Compression::SNAPPY,
            props->compression(ColumnPath::FromDotString("delta-length")));
  ASSERT_EQ(Encoding::DELTA_BINARY_PACKED,
            props->encoding(ColumnPath::FromDotString("gzip")));
  ASSERT_EQ(Encoding::DELTA_LENGTH_BYTE_ARRAY,
            props->encoding(ColumnPath::FromDotString("delta-length")));
  ASSERT_EQ(ParquetDataPageVersion::V2, props->data_page_version());
}

TEST(TestReaderProperties, GetStreamInsufficientData) {
  // ARROW-6058
  std::string data = "shorter than expected";
  auto buf = std::make_shared<Buffer>(data);
  auto reader = std::make_shared<::arrow::io::BufferReader>(buf);

  ReaderProperties props;
  try {
    ARROW_UNUSED(props.GetStream(reader, 12, 15));
    FAIL() << "No exception raised";
  } catch (const ParquetException& e) {
    std::string ex_what =
        ("Tried reading 15 bytes starting at position 12"
         " from file but only got 9");
    ASSERT_EQ(ex_what, e.what());
  }
}

}  // namespace test
}  // namespace parquet