1 files changed, 23 insertions, 0 deletions
diff --git a/third_party/rust/ron/tests/floats.rs b/third_party/rust/ron/tests/floats.rs
new file mode 100644
index 0000000000..9a5474fa68
--- /dev/null
+++ b/third_party/rust/ron/tests/floats.rs
@@ -0,0 +1,23 @@
+use ron::{
+    de::from_str,
+    ser::{to_string, to_string_pretty, PrettyConfig},
+};
+
+#[test]
+fn test_inf_and_nan() {
+    assert_eq!(from_str("inf"), Ok(std::f64::INFINITY));
+    assert_eq!(from_str("-inf"), Ok(std::f64::NEG_INFINITY));
+    assert_eq!(from_str::<f64>("NaN").map(|n| n.is_nan()), Ok(true))
+}
+
+#[test]
+fn decimal_floats() {
+    let non_pretty = to_string(&1.0).unwrap();
+    assert_eq!(non_pretty, "1.0");
+
+    let with_pretty = to_string_pretty(&1.0, PrettyConfig::new()).unwrap();
+    assert_eq!(with_pretty, "1.0");
+
+    let tiny_pretty = to_string_pretty(&0.00000000000000005, PrettyConfig::new()).unwrap();
+    assert_eq!(tiny_pretty, "0.00000000000000005");
+}