1 files changed, 82 insertions, 0 deletions
diff --git a/third_party/rust/flate2/tests/empty-read.rs b/third_party/rust/flate2/tests/empty-read.rs
new file mode 100644
index 0000000000..7551238336
--- /dev/null
+++ b/third_party/rust/flate2/tests/empty-read.rs
@@ -0,0 +1,82 @@
+extern crate flate2;
+
+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);
+}