From 609d457301013ea7f6d274e51e925a687d30b70d Mon Sep 17 00:00:00 2001
From: toversus <toversus2357@gmail.com>
Date: Tue, 10 Jul 2018 21:27:12 +0900
Subject: [PATCH] binding for Date.prototype.setMonth()

---
 src/js.rs                    |  6 ++++++
 tests/all/js_globals/Date.rs | 39 ++++++++++++++++++++++++++++++++++++
 2 files changed, 45 insertions(+)

diff --git a/src/js.rs b/src/js.rs
index 9e26fce37..5ba80eed4 100644
--- a/src/js.rs
+++ b/src/js.rs
@@ -1054,6 +1054,12 @@ extern "C" {
     #[wasm_bindgen(method, js_name = setMinutes)]
     pub fn set_minutes(this: &Date, minutes: u32) -> f64;
 
+    /// The setMonth() method sets the month for a specified date according to the currently set year.
+    ///
+    /// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Date/setMonth
+    #[wasm_bindgen(method, js_name = setMonth)]
+    pub fn set_month(this: &Date, month: u32) -> f64;
+
     /// The toDateString() method returns the date portion of a Date object
     /// in human readable form in American English.
     ///
diff --git a/tests/all/js_globals/Date.rs b/tests/all/js_globals/Date.rs
index f7252b21d..11ebcc7fb 100755
--- a/tests/all/js_globals/Date.rs
+++ b/tests/all/js_globals/Date.rs
@@ -919,6 +919,45 @@ fn set_minutes() {
         .test()
 }
 
+#[test]
+fn set_month() {
+    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_month(this: &Date, month: u32) -> f64 {
+                this.set_month(month)
+            }
+        "#,
+        )
+        .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('April 19, 1975 23:15:30');
+
+                let eventMsFromUnixEpoch = wasm.set_month(event1, 3);
+
+                assert.equal(eventMsFromUnixEpoch, 167148930000);
+                assert.equal(event1.getTime(), event2.valueOf());
+                assert.equal(event1.getMonth(), 3);
+            }
+        "#,
+        )
+        .test()
+}
+
 #[test]
 fn to_date_string() {
     project()