1 files changed, 28 insertions, 0 deletions
diff --git a/third_party/rust/ron/tests/large_number.rs b/third_party/rust/ron/tests/large_number.rs
new file mode 100644
index 0000000000..c8ae49f0b4
--- /dev/null
+++ b/third_party/rust/ron/tests/large_number.rs
@@ -0,0 +1,28 @@
+use ron::value::{Number, Value};
+
+#[test]
+fn test_large_number() {
+    let test_var = Value::Number(Number::new(10000000000000000000000.0f64));
+    let test_ser = ron::ser::to_string(&test_var).unwrap();
+    let test_deser = ron::de::from_str::<Value>(&test_ser);
+
+    assert_eq!(
+        test_deser.unwrap(),
+        Value::Number(Number::new(10000000000000000000000.0))
+    );
+}
+
+#[test]
+fn test_large_integer_to_float() {
+    use ron::value::Float;
+    let test_var = std::i64::MAX as u64 + 1;
+    let expected = test_var as f64; // Is exactly representable by f64
+    let test_ser = ron::ser::to_string(&test_var).unwrap();
+    assert_eq!(test_ser, test_var.to_string());
+    let test_deser = ron::de::from_str::<Value>(&test_ser);
+
+    assert_eq!(
+        test_deser.unwrap(),
+        Value::Number(Number::Float(Float::new(expected))),
+    );
+}