binding for Date.prototype.setHours()

src/js.rs

@@ -1034,6 +1034,14 @@ extern "C" {
     #[wasm_bindgen(method, js_name = setFullYear)]
     pub fn set_full_year(this: &Date, year: u32) -> f64;
 
+    /// The setHours() method sets the hours for a specified date according to local time,
+    /// and returns the number of milliseconds since January 1, 1970 00:00:00 UTC until the time represented
+    /// by the updated Date instance.
+    ///
+    /// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Date/setHours
+    #[wasm_bindgen(method, js_name = setHours)]
+    pub fn set_hours(this: &Date, hours: u32) -> f64;
+
     /// The toDateString() method returns the date portion of a Date object
     /// in human readable form in American English.
     ///

tests/all/js_globals/Date.rs

@@ -804,6 +804,45 @@ fn set_full_year() {
         .test()
 }
 
+#[test]
+fn set_hours() {
+    project()
+        .file(
+            "src/lib.rs",
+            r#"
+            #![feature(proc_macro, wasm_custom_section)]
+
+            extern crate wasm_bindgen;
+            use wasm_bindgen::prelude::*;
+            use wasm_bindgen::js::Date;
+
+            #[wasm_bindgen]
+            pub fn set_hours(this: &Date, hours: u32) -> f64 {
+                this.set_hours(hours)
+            }
+        "#,
+        )
+        .file(
+            "test.js",
+            r#"
+            import * as assert from "assert";
+            import * as wasm from "./out";
+
+            export function test() {
+                let event1 = new Date('August 19, 1975 23:15:30');
+                let event2 = new Date('August 19, 1975 20:15:30');
+
+                let eventMsFromUnixEpoch = wasm.set_hours(event1, 20);
+
+                assert.equal(eventMsFromUnixEpoch, 177678930000);
+                assert.equal(event1.getTime(), event2.valueOf());
+                assert.equal(event1.getHours(), 20);
+            }
+        "#,
+        )
+        .test()
+}
+
 #[test]
 fn to_date_string() {
     project()