Description

This issue tracks the need to create more exhaustive and robust unit tests for the zstd decompression functionality, specifically for the Decompressor class in components/core/src/clp/streaming_compression/zstd/.

Context

During the review of PR #977 (which fixes zstd internal buffer exhaustion), it was decided to defer comprehensive unit tests to a separate PR to make them more thorough and robust.

Tasks

• Add comprehensive unit tests for the Decompressor::try_read() method
• Add unit tests for the new Decompressor::refill_compressed_stream_block() method
• Test edge cases around frame continuation (m_zstd_frame_might_have_more_data)
• Test various input types (CompressedDataBuf, MemoryMappedCompressedFile, ReaderInterface)
• Test error handling scenarios
• Test buffer exhaustion and refill scenarios

References

• Original PR: fix(core): Try to exhaust Zstd's internal buffers when they might contain unconsumed data. (fixes #976). #977
• Related comment: fix(core): Try to exhaust Zstd's internal buffers when they might contain unconsumed data. (fixes #976). #977 (comment)