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| 1 | +use crate::{HashReader, HashWriter}; |
| 2 | +use bytes::Bytes; |
| 3 | +use digest::Digest; |
| 4 | +use futures::stream; |
| 5 | +use sha2::Sha256; |
| 6 | +use tokio_util::io::StreamReader; |
| 7 | + |
| 8 | +#[tokio::test] |
| 9 | +async fn test_async_read() { |
| 10 | + let data = b"the quick brown fox jumps over the lazy dog".repeat(1000); |
| 11 | + |
| 12 | + // Feed the stream chunk by chunk with an odd sized buffer. |
| 13 | + let chunks = stream::iter( |
| 14 | + data.chunks(37) |
| 15 | + .map(|c| Ok::<_, std::io::Error>(Bytes::copy_from_slice(c))) |
| 16 | + .collect::<Vec<_>>(), |
| 17 | + ); |
| 18 | + let mut reader = HashReader::<Sha256, _>::new(StreamReader::new(chunks)); |
| 19 | + let mut sink = Vec::new(); |
| 20 | + tokio::io::copy(&mut reader, &mut sink).await.unwrap(); |
| 21 | + |
| 22 | + assert_eq!(sink, data); |
| 23 | + assert_eq!(reader.finalize(), Sha256::digest(&data)); |
| 24 | +} |
| 25 | + |
| 26 | +#[tokio::test] |
| 27 | +async fn test_async_write() { |
| 28 | + let data = b"the quick brown fox jumps over the lazy dog".repeat(1000); |
| 29 | + |
| 30 | + // Feed the stream chunk by chunk with an odd sized buffer. |
| 31 | + let chunks = stream::iter( |
| 32 | + data.chunks(37) |
| 33 | + .map(|c| Ok::<_, std::io::Error>(Bytes::copy_from_slice(c))) |
| 34 | + .collect::<Vec<_>>(), |
| 35 | + ); |
| 36 | + let mut source = StreamReader::new(chunks); |
| 37 | + |
| 38 | + let mut writer = HashWriter::<Sha256, _>::new(Vec::new()); |
| 39 | + tokio::io::copy(&mut source, &mut writer).await.unwrap(); |
| 40 | + writer.flush().await.unwrap(); |
| 41 | + |
| 42 | + let (hasher, sink) = writer.into_parts(); |
| 43 | + assert_eq!(sink, data); |
| 44 | + assert_eq!(hasher.finalize(), Sha256::digest(&data)); |
| 45 | +} |
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