Start adding Cypress tests for crypto (#8577)

Co-authored-by: Michael Telatynski <7t3chguy@gmail.com>

cypress/support/bot.ts

@@ -20,6 +20,7 @@ import request from "browser-request";
 
 import type { MatrixClient } from "matrix-js-sdk/src/client";
 import { SynapseInstance } from "../plugins/synapsedocker";
+import { MockStorage } from "./storage";
 import Chainable = Cypress.Chainable;
 
 declare global {
@@ -47,6 +48,10 @@ Cypress.Commands.add("getBot", (synapse: SynapseInstance, displayName?: string):
                 deviceId: credentials.deviceId,
                 accessToken: credentials.accessToken,
                 request,
+                store: new win.matrixcs.MemoryStore(),
+                scheduler: new win.matrixcs.MatrixScheduler(),
+                cryptoStore: new win.matrixcs.MemoryCryptoStore(),
+                sessionStore: new win.matrixcs.WebStorageSessionStore(new MockStorage()),
             });
 
             cli.on(win.matrixcs.RoomMemberEvent.Membership, (event, member) => {
@@ -55,9 +60,12 @@ Cypress.Commands.add("getBot", (synapse: SynapseInstance, displayName?: string):
                 }
             });
 
-            cli.startClient();
-
-            return cli;
+            return cy.wrap(
+                cli.initCrypto()
+                    .then(() => cli.setGlobalErrorOnUnknownDevices(false))
+                    .then(() => cli.startClient())
+                    .then(() => cli),
+            );
         });
     });
 });

cypress/support/storage.ts

@@ -0,0 +1,58 @@
+/*
+Copyright 2022 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.
+*/
+
+export class MockStorage implements Storage {
+    private data: Record<string, string> = {};
+    private keys: string[] = [];
+    public length = 0;
+
+    constructor() {}
+
+    public setItem(k: string, v: string) {
+        this.data[k] = v;
+        this.recalc();
+    }
+
+    public getItem(k: string): string | null {
+        return this.data[k] || null;
+    }
+
+    public removeItem(k: string) {
+        delete this.data[k];
+        this.recalc();
+    }
+
+    public clear() {
+        this.data = {};
+        this.recalc();
+    }
+
+    public key(index: number): string {
+        return this.keys[index];
+    }
+
+    private recalc() {
+        const keys = [];
+        for (const k in this.data) {
+            if (!this.data.hasOwnProperty(k)) {
+                continue;
+            }
+            keys.push(k);
+        }
+        this.keys = keys;
+        this.length = keys.length;
+    }
+}