From 1a28c50223668856c26e152955c516457d46960e Mon Sep 17 00:00:00 2001
From: Sean Cribbs <seancribbs@gmail.com>
Date: Sun, 21 Jan 2024 15:55:22 -0600
Subject: [PATCH] Add test for cfg attributes

---
 tests/wasm/attributes.js |  9 +++++++++
 tests/wasm/attributes.rs | 36 ++++++++++++++++++++++++++++++++++++
 tests/wasm/main.rs       |  1 +
 3 files changed, 46 insertions(+)
 create mode 100644 tests/wasm/attributes.js
 create mode 100644 tests/wasm/attributes.rs

diff --git a/tests/wasm/attributes.js b/tests/wasm/attributes.js
new file mode 100644
index 00000000000..39a1dd01988
--- /dev/null
+++ b/tests/wasm/attributes.js
@@ -0,0 +1,9 @@
+const wasm = require("wasm-bindgen-test.js");
+const assert = require("assert");
+
+exports.js_works = () => {
+  assert.strictEqual(wasm.valid_export(), true);
+  assert.strictEqual(wasm.invalid_export, undefined);
+  assert.strictEqual(wasm.valid_attr_export(), true);
+  assert.strictEqual(wasm.invalid_attr_export, undefined);
+};
diff --git a/tests/wasm/attributes.rs b/tests/wasm/attributes.rs
new file mode 100644
index 00000000000..bfc695c04d5
--- /dev/null
+++ b/tests/wasm/attributes.rs
@@ -0,0 +1,36 @@
+use wasm_bindgen::prelude::*;
+use wasm_bindgen_test::*;
+
+#[wasm_bindgen(module = "tests/wasm/attributes.js")]
+extern "C" {
+    fn js_works();
+}
+
+#[wasm_bindgen_test]
+fn works() {
+    js_works();
+}
+
+#[wasm_bindgen]
+#[cfg(target_arch = "wasm32")]
+pub fn valid_export() -> bool {
+    true
+}
+
+#[wasm_bindgen]
+#[cfg(not(target_arch = "wasm32"))]
+pub fn invalid_export() -> bool {
+    false
+}
+
+#[wasm_bindgen]
+#[cfg_attr(not(target_arch = "wasm32"), cfg(feature = "missing-feature"))]
+pub fn valid_attr_export() -> bool {
+    true
+}
+
+#[wasm_bindgen]
+#[cfg_attr(target_arch = "wasm32", cfg(feature = "missing-feature"))]
+pub fn invalid_attr_export() -> bool {
+    false
+}
diff --git a/tests/wasm/main.rs b/tests/wasm/main.rs
index 72bb5c414f4..22ed2dfd48f 100644
--- a/tests/wasm/main.rs
+++ b/tests/wasm/main.rs
@@ -16,6 +16,7 @@ use wasm_bindgen::prelude::*;
 
 pub mod api;
 pub mod arg_names;
+pub mod attributes;
 pub mod bigint;
 pub mod char;
 pub mod classes;