1 files changed, 30 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..e19726b1ba
--- /dev/null
+++ b/third_party/rust/ron/tests/floats.rs
@@ -0,0 +1,30 @@
+use ron::{
+    de::from_str,
+    ser::{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 pretty = PrettyConfig::new().with_decimal_floats(false);
+    let without_decimal = to_string_pretty(&1.0, pretty).unwrap();
+    assert_eq!(without_decimal, "1");
+
+    let pretty = PrettyConfig::new().with_decimal_floats(false);
+    let without_decimal = to_string_pretty(&1.1, pretty).unwrap();
+    assert_eq!(without_decimal, "1.1");
+
+    let pretty = PrettyConfig::new().with_decimal_floats(true);
+    let with_decimal = to_string_pretty(&1.0, pretty).unwrap();
+    assert_eq!(with_decimal, "1.0");
+
+    let pretty = PrettyConfig::new().with_decimal_floats(true);
+    let with_decimal = to_string_pretty(&1.1, pretty).unwrap();
+    assert_eq!(with_decimal, "1.1");
+}