Add tests for multiple renames.

codegen/ui_tests/rhai_fn_rename_collision_with_itself.rs

@@ -0,0 +1,25 @@
+use rhai::plugin::*;
+
+#[derive(Clone)]
+pub struct Point {
+    x: f32,
+    y: f32,
+}
+
+#[export_module]
+pub mod test_module {
+    pub use super::Point;
+    #[rhai_fn(name = "foo", name = "bar", name = "foo")]
+    pub fn test_fn(input: Point) -> bool {
+        input.x > input.y
+    }
+}
+
+fn main() {
+    let n = Point { x: 0.0, y: 10.0 };
+    if test_module::test_fn(n) {
+        println!("yes");
+    } else {
+        println!("no");
+    }
+}