Improve test coverage

src/time/js.rs

@@ -6,13 +6,15 @@ use wasm_bindgen::{JsCast, JsValue};
 #[wasm_bindgen]
 extern "C" {
 	/// Type for the [global object](https://developer.mozilla.org/en-US/docs/Glossary/Global_object).
+	#[wasm_bindgen(no_deref)]
 	type Global;
 
 	/// Returns the [`Performance`](https://developer.mozilla.org/en-US/docs/Web/API/Performance) object.
 	#[wasm_bindgen(method, getter)]
 	fn performance(this: &Global) -> JsValue;
 
 	/// Type for the [`Performance` object](https://developer.mozilla.org/en-US/docs/Web/API/Performance).
+	#[wasm_bindgen(no_deref)]
 	pub(super) type Performance;
 
 	/// Binding to [`Performance.now()`](https://developer.mozilla.org/en-US/docs/Web/API/Performance/now).

tests/system_time_success.rs

@@ -118,4 +118,11 @@ test! {
 		assert!(later >= earlier);
 		assert!(later.duration_since(earlier).unwrap() <= MAX_DIFF);
 	}
+
+	/// [`SystemTime::elapsed()`] failure.
+	async fn error() {
+		let time = SystemTime::now() + DIFF;
+		let error = time.elapsed().unwrap_err();
+		assert_eq!(error.to_string(), "second time provided was later than self");
+	}
 }

tests/web.rs

@@ -0,0 +1,38 @@
+#![cfg(test)]
+#![cfg(target_family = "wasm")]
+
+use std::time;
+use std::time::Duration;
+
+use wasm_bindgen_test::wasm_bindgen_test;
+use web_time::web::SystemTimeExt;
+
+wasm_bindgen_test::wasm_bindgen_test_configure!(run_in_browser);
+
+#[wasm_bindgen_test]
+fn to_std() {
+	assert_eq!(
+		web_time::SystemTime::UNIX_EPOCH.to_std(),
+		time::SystemTime::UNIX_EPOCH,
+	);
+
+	let duration = Duration::from_secs(60 * 60 * 24 * 365);
+	assert_eq!(
+		(web_time::SystemTime::UNIX_EPOCH + duration).to_std(),
+		time::SystemTime::UNIX_EPOCH + duration,
+	);
+}
+
+#[wasm_bindgen_test]
+fn from_std() {
+	assert_eq!(
+		web_time::SystemTime::from_std(time::SystemTime::UNIX_EPOCH),
+		web_time::SystemTime::UNIX_EPOCH,
+	);
+
+	let duration = Duration::from_secs(60 * 60 * 24 * 365);
+	assert_eq!(
+		web_time::SystemTime::from_std(time::SystemTime::UNIX_EPOCH + duration),
+		web_time::SystemTime::UNIX_EPOCH + duration,
+	);
+}