js: Add close() method to close WebSocket without reconnecting

js/src/mopidy.js

@@ -119,6 +119,11 @@ Mopidy.prototype._resetBackoffDelay = function () {
     this._backoffDelay = this._settings.backoffDelayMin;
 };
 
+Mopidy.prototype.close = function () {
+    this.off("state:offline", this._reconnect);
+    this._webSocket.close();
+};
+
 Mopidy.prototype._handleWebSocketError = function (error) {
     this._console.warn("WebSocket error:", error.stack || error);
 };

js/test/mopidy-test.js

@@ -254,6 +254,23 @@ buster.testCase("Mopidy", {
         }
     },
 
+    "close": {
+        "unregisters reconnection hooks": function () {
+            this.stub(this.mopidy, "off");
+
+            this.mopidy.close();
+
+            assert.calledOnceWith(
+                this.mopidy.off, "state:offline", this.mopidy._reconnect);
+        },
+
+        "closes the WebSocket": function () {
+            this.mopidy.close();
+
+            assert.calledOnceWith(this.mopidy._webSocket.close);
+        }
+    },
+
     "._handleWebSocketError": {
         "is called on 'websocket:error' event": function () {
             var error = {};

mopidy/frontends/http/data/mopidy.js

@@ -1028,6 +1028,11 @@ Mopidy.prototype._resetBackoffDelay = function () {
     this._backoffDelay = this._settings.backoffDelayMin;
 };
 
+Mopidy.prototype.close = function () {
+    this.off("state:offline", this._reconnect);
+    this._webSocket.close();
+};
+
 Mopidy.prototype._handleWebSocketError = function (error) {
     this._console.warn("WebSocket error:", error.stack || error);
 };