chore: checkpoint before Python removal

vendor/flate2/tests/empty-read.rs

@@ -0,0 +1,80 @@
+use std::io::{Read, Write};
+
+#[test]
+fn deflate_decoder_empty_read() {
+    let original: &[u8] = b"Lorem ipsum dolor sit amet.";
+    let mut encoder =
+        flate2::write::DeflateEncoder::new(Vec::new(), flate2::Compression::default());
+    encoder.write_all(original).unwrap();
+    let encoded: Vec<u8> = encoder.finish().unwrap();
+    let mut decoder = flate2::read::DeflateDecoder::new(encoded.as_slice());
+    assert_eq!(decoder.read(&mut []).unwrap(), 0);
+    let mut decoded = Vec::new();
+    decoder.read_to_end(&mut decoded).unwrap();
+    assert_eq!(decoded.as_slice(), original);
+}
+
+#[test]
+fn deflate_encoder_empty_read() {
+    let original: &[u8] = b"Lorem ipsum dolor sit amet.";
+    let mut encoder = flate2::read::DeflateEncoder::new(original, flate2::Compression::default());
+    assert_eq!(encoder.read(&mut []).unwrap(), 0);
+    let mut encoded = Vec::new();
+    encoder.read_to_end(&mut encoded).unwrap();
+    let mut decoder = flate2::read::DeflateDecoder::new(encoded.as_slice());
+    let mut decoded = Vec::new();
+    decoder.read_to_end(&mut decoded).unwrap();
+    assert_eq!(decoded.as_slice(), original);
+}
+
+#[test]
+fn gzip_decoder_empty_read() {
+    let original: &[u8] = b"Lorem ipsum dolor sit amet.";
+    let mut encoder = flate2::write::GzEncoder::new(Vec::new(), flate2::Compression::default());
+    encoder.write_all(original).unwrap();
+    let encoded: Vec<u8> = encoder.finish().unwrap();
+    let mut decoder = flate2::read::GzDecoder::new(encoded.as_slice());
+    assert_eq!(decoder.read(&mut []).unwrap(), 0);
+    let mut decoded = Vec::new();
+    decoder.read_to_end(&mut decoded).unwrap();
+    assert_eq!(decoded.as_slice(), original);
+}
+
+#[test]
+fn gzip_encoder_empty_read() {
+    let original: &[u8] = b"Lorem ipsum dolor sit amet.";
+    let mut encoder = flate2::read::GzEncoder::new(original, flate2::Compression::default());
+    assert_eq!(encoder.read(&mut []).unwrap(), 0);
+    let mut encoded = Vec::new();
+    encoder.read_to_end(&mut encoded).unwrap();
+    let mut decoder = flate2::read::GzDecoder::new(encoded.as_slice());
+    let mut decoded = Vec::new();
+    decoder.read_to_end(&mut decoded).unwrap();
+    assert_eq!(decoded.as_slice(), original);
+}
+
+#[test]
+fn zlib_decoder_empty_read() {
+    let original: &[u8] = b"Lorem ipsum dolor sit amet.";
+    let mut encoder = flate2::write::ZlibEncoder::new(Vec::new(), flate2::Compression::default());
+    encoder.write_all(original).unwrap();
+    let encoded: Vec<u8> = encoder.finish().unwrap();
+    let mut decoder = flate2::read::ZlibDecoder::new(encoded.as_slice());
+    assert_eq!(decoder.read(&mut []).unwrap(), 0);
+    let mut decoded = Vec::new();
+    decoder.read_to_end(&mut decoded).unwrap();
+    assert_eq!(decoded.as_slice(), original);
+}
+
+#[test]
+fn zlib_encoder_empty_read() {
+    let original: &[u8] = b"Lorem ipsum dolor sit amet.";
+    let mut encoder = flate2::read::ZlibEncoder::new(original, flate2::Compression::default());
+    assert_eq!(encoder.read(&mut []).unwrap(), 0);
+    let mut encoded = Vec::new();
+    encoder.read_to_end(&mut encoded).unwrap();
+    let mut decoder = flate2::read::ZlibDecoder::new(encoded.as_slice());
+    let mut decoded = Vec::new();
+    decoder.read_to_end(&mut decoded).unwrap();
+    assert_eq!(decoded.as_slice(), original);
+}