init repo

tests/app.rs

@@ -0,0 +1,35 @@
+use wasm_bindgen_test::{wasm_bindgen_test_configure, wasm_bindgen_test};
+use futures::prelude::*;
+use wasm_bindgen::JsValue;
+use wasm_bindgen_futures::JsFuture;
+
+wasm_bindgen_test_configure!(run_in_browser);
+
+
+// This runs a unit test in native Rust, so it can only use Rust APIs.
+#[test]
+fn rust_test() {
+    assert_eq!(1, 1);
+}
+
+
+// This runs a unit test in the browser, so it can use browser APIs.
+#[wasm_bindgen_test]
+fn web_test() {
+    assert_eq!(1, 1);
+}
+
+
+// This runs a unit test in the browser, and in addition it supports asynchronous Future APIs.
+#[wasm_bindgen_test(async)]
+fn async_test() -> impl Future<Item = (), Error = JsValue> {
+    // Creates a JavaScript Promise which will asynchronously resolve with the value 42.
+    let promise = js_sys::Promise::resolve(&JsValue::from(42));
+
+    // Converts that Promise into a Future.
+    // The unit test will wait for the Future to resolve.
+    JsFuture::from(promise)
+        .map(|x| {
+            assert_eq!(x, 42);
+        })
+}