1 files changed, 77 insertions, 0 deletions
diff --git a/third_party/rust/flate2/tests/gunzip.rs b/third_party/rust/flate2/tests/gunzip.rs
new file mode 100644
index 0000000000..c3820328af
--- /dev/null
+++ b/third_party/rust/flate2/tests/gunzip.rs
@@ -0,0 +1,77 @@
+extern crate flate2;
+
+use flate2::read::GzDecoder;
+use flate2::read::MultiGzDecoder;
+use std::fs::File;
+use std::io::prelude::*;
+use std::io::{self, BufReader};
+use std::path::Path;
+
+// test extraction of a gzipped file
+#[test]
+fn test_extract_success() {
+    let content = extract_file(Path::new("tests/good-file.gz")).unwrap();
+    let mut expected = Vec::new();
+    File::open("tests/good-file.txt")
+        .unwrap()
+        .read_to_end(&mut expected)
+        .unwrap();
+    assert!(content == expected);
+}
+//
+// test partial extraction of a multistream gzipped file
+#[test]
+fn test_extract_success_partial_multi() {
+    let content = extract_file(Path::new("tests/multi.gz")).unwrap();
+    let mut expected = String::new();
+    BufReader::new(File::open("tests/multi.txt").unwrap())
+        .read_line(&mut expected)
+        .unwrap();
+    assert_eq!(content, expected.as_bytes());
+}
+
+// test extraction fails on a corrupt file
+#[test]
+fn test_extract_failure() {
+    let result = extract_file(Path::new("tests/corrupt-gz-file.bin"));
+    assert_eq!(result.err().unwrap().kind(), io::ErrorKind::InvalidInput);
+}
+
+//test complete extraction of a multistream gzipped file
+#[test]
+fn test_extract_success_multi() {
+    let content = extract_file_multi(Path::new("tests/multi.gz")).unwrap();
+    let mut expected = Vec::new();
+    File::open("tests/multi.txt")
+        .unwrap()
+        .read_to_end(&mut expected)
+        .unwrap();
+    assert_eq!(content, expected);
+}
+
+// Tries to extract path into memory (assuming a .gz file).
+fn extract_file(path_compressed: &Path) -> io::Result<Vec<u8>> {
+    let mut v = Vec::new();
+    let f = File::open(path_compressed)?;
+    GzDecoder::new(f).read_to_end(&mut v)?;
+    Ok(v)
+}
+
+// Tries to extract path into memory (decompressing all members in case
+// of a multi member .gz file).
+fn extract_file_multi(path_compressed: &Path) -> io::Result<Vec<u8>> {
+    let mut v = Vec::new();
+    let f = File::open(path_compressed)?;
+    MultiGzDecoder::new(f).read_to_end(&mut v)?;
+    Ok(v)
+}
+
+#[test]
+fn empty_error_once() {
+    let data: &[u8] = &[];
+    let cbjson = GzDecoder::new(data);
+    let reader = BufReader::new(cbjson);
+    let mut stream = reader.lines();
+    assert!(stream.next().unwrap().is_err());
+    assert!(stream.next().is_none());
+}