1 files changed, 48 insertions, 0 deletions
diff --git a/third_party/rust/leb128/tests/quickchecks.rs b/third_party/rust/leb128/tests/quickchecks.rs
new file mode 100644
index 0000000000..d6c1c1ccc5
--- /dev/null
+++ b/third_party/rust/leb128/tests/quickchecks.rs
@@ -0,0 +1,48 @@
+use leb128;
+use quickcheck;
+
+use std::io;
+
+#[test]
+fn can_write_any_unsigned_int() {
+    fn f(x: u64) -> io::Result<()> {
+        let mut v = vec![];
+        leb128::write::unsigned(&mut v, x)?;
+        Ok(())
+    }
+    quickcheck::quickcheck(f as fn(u64) -> io::Result<()>);
+}
+
+#[test]
+fn can_round_trip_any_unsigned_int() {
+    fn f(x: u64) -> io::Result<bool> {
+        let mut v = vec![];
+        leb128::write::unsigned(&mut v, x)?;
+        let y = leb128::read::unsigned(&mut &v[..])
+            .map_err(|e| io::Error::new(io::ErrorKind::Other, e))?;
+        Ok(x == y)
+    }
+    quickcheck::quickcheck(f as fn(u64) -> io::Result<bool>);
+}
+
+#[test]
+fn can_write_any_signed_int() {
+    fn f(x: i64) -> io::Result<()> {
+        let mut v = vec![];
+        leb128::write::signed(&mut v, x)?;
+        Ok(())
+    }
+    quickcheck::quickcheck(f as fn(i64) -> io::Result<()>);
+}
+
+#[test]
+fn can_round_trip_any_signed_int() {
+    fn f(x: i64) -> io::Result<bool> {
+        let mut v = vec![];
+        leb128::write::signed(&mut v, x)?;
+        let y = leb128::read::signed(&mut &v[..])
+            .map_err(|e| io::Error::new(io::ErrorKind::Other, e))?;
+        Ok(x == y)
+    }
+    quickcheck::quickcheck(f as fn(i64) -> io::Result<bool>);
+}