Add crate int-to-c-enum

services/libs/int-to-c-enum/tests/regression.rs

@@ -0,0 +1,22 @@
+use int_to_c_enum::TryFromInt;
+
+#[derive(TryFromInt, Debug, PartialEq, Eq)]
+#[repr(u8)]
+enum Color {
+    Red = 1,
+    Blue = 2,
+    Green = 3,
+}
+
+#[test]
+fn conversion() {
+    let color = Color::try_from(1).unwrap();
+    println!("color = {color:?}");
+    assert!(color == Color::Red);
+}
+
+#[test]
+fn invalid_value() {
+    let color = Color::try_from(4);
+    assert!(color.is_err());
+}