Add a regression test

Author: jakubadamw

worker/tests/event.rs

@@ -3,3 +3,9 @@ fn event_invalid_signatures() {
     let t = trybuild::TestCases::new();
     t.compile_fail("tests/ui/*.rs");
 }
+
+#[test]
+fn event_valid_signatures() {
+    let t = trybuild::TestCases::new();
+    t.pass("tests/pass/*.rs");
+}

worker/tests/pass/start-handler.rs

@@ -0,0 +1,14 @@
+// Regression test for https://github.com/cloudflare/workers-rs/issues/973.
+// A `#[event(start)]` handler must compile without `wasm-bindgen` as a direct
+// dependency. The macro should resolve `wasm_bindgen` through `::worker::`.
+// It must also not conflict when `wasm_bindgen` is already in scope, or when
+// multiple `#[event(start)]` handlers exist in the same module.
+use worker::{event, wasm_bindgen};
+
+#[event(start)]
+pub fn setup_hook() {}
+
+#[event(start)]
+pub fn another_hook() {}
+
+fn main() {}