utility for homeserver api mocking

src/mocks/HomeServer.js

@@ -0,0 +1,62 @@
+/*
+Copyright 2021 The Matrix.org Foundation C.I.C.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import {BaseRequest} from "./Request.js";
+
+// a request as returned by the HomeServerApi
+class HomeServerRequest extends BaseRequest {
+    constructor(args) {
+        super();
+        this.arguments = args;
+    }
+
+    respond(body) {
+        return this._respond(body);
+    }
+}
+
+class Target {
+    constructor() {
+        this.requests = {};
+    }
+}
+
+function handleMethod(target, name, ...args) {
+    let requests = target.requests[name]
+    if (!requests) {
+        target.requests[name] = requests = [];
+    }
+    const request = new HomeServerRequest(args);
+    requests.push(request);
+    return request;
+}
+
+class Handler {
+    get(target, prop) {
+        return handleMethod.bind(null, target, prop);
+    }
+}
+
+export class HomeServer {
+    constructor() {
+        this._target = new Target();
+        this.api = new Proxy(this._target, new Handler());
+    }
+
+    get requests() {
+        return this._target.requests;
+    }
+}

src/mocks/Request.js

@@ -16,17 +16,19 @@ limitations under the License.
 
 import {AbortError} from "../utils/error.js";
 
-export class Request {
+export class BaseRequest {
     constructor() {
         this._responsePromise = new Promise((resolve, reject) => {
             this.resolve = resolve;
             this.reject = reject;
         });
+        this.responded = false;
         this.aborted = false;
     }
 
-    respond(status, body) {
-        this.resolve({status, body});
+    _respond(value) {
+        this.responded = true;
+        this.resolve(value);
         return this;
     }
 
@@ -39,3 +41,10 @@ export class Request {
         return this._responsePromise;
     }
 }
+
+// this is a NetworkRequest as used by HomeServerApi
+export class Request extends BaseRequest {
+    respond(status, body) {
+        return this._respond({status, body});
+    }
+}