implement add_static_searcher

to facilitate compile-time includes

tests/tests.rs

@@ -3,7 +3,7 @@ use rlua_searcher::{AddSearcher, Result};
 use std::collections::HashMap;
 
 #[test]
-fn it_works() {
+fn add_searcher_works() {
     let lume = read_lume_to_string();
     let name = "lume".to_string();
     let mut map = HashMap::new();
@@ -21,6 +21,29 @@ fn it_works() {
     assert_eq!("hello lume", hello);
 }
 
+#[test]
+fn add_static_searcher_works() {
+    let lume = read_lume_to_str();
+    let name = "lume".to_string();
+    let mut map = HashMap::new();
+    map.insert(name, lume);
+
+    let lua = Lua::new();
+
+    let hello = lua
+        .context::<_, Result<String>>(|lua_ctx| {
+            lua_ctx.add_static_searcher(map)?;
+            Ok(lua_ctx.load(r#"return require("lume")"#).eval()?)
+        })
+        .unwrap();
+
+    assert_eq!("hello lume", hello);
+}
+
 fn read_lume_to_string() -> String {
     r#"return "hello lume""#.to_string()
 }
+
+fn read_lume_to_str() -> &'static str {
+    r#"return "hello lume""#
+}