add CatSearcher

tests/tests.rs

@@ -1,3 +1,4 @@
+use io_cat::CatMap;
 use rlua::{Context, Function, Lua, Table, UserData, UserDataMethods, Value};
 use rlua_searcher::{AddSearcher, Result};
 use std::borrow::Cow;
@@ -330,3 +331,35 @@ fn cartridge_loader<'ctx>(
         .set_environment(env)?
         .into_function()?)
 }
+
+#[test]
+fn add_cat_searcher_works() {
+    let name = Cow::from("lume".to_string());
+    let path = PathBuf::new()
+        .join(std::env::var("CARGO_MANIFEST_DIR").unwrap())
+        .join("tests")
+        .join("data")
+        .join("lume.lua");
+    let mut map: CatMap<Cow<'static, str>> = CatMap::new();
+    map.insert(name, Box::new(path));
+    map.insert(Cow::from("loon"), Box::new(r#"return "hello loon""#));
+
+    let lua = Lua::new();
+
+    let hello = lua
+        .context::<_, Result<String>>(|lua_ctx| {
+            lua_ctx.add_cat_searcher(map)?;
+            Ok(lua_ctx.load(r#"return require("lume")"#).eval()?)
+        })
+        .unwrap();
+
+    assert_eq!("hello lume", hello);
+
+    let hello = lua
+        .context::<_, Result<String>>(|lua_ctx| {
+            Ok(lua_ctx.load(r#"return require("loon")"#).eval()?)
+        })
+        .unwrap();
+
+    assert_eq!("hello loon", hello);
+}