test: Update jest configuration (#3951)

* Split shared tests

* Centralize and parallelize jest config

* ci

server/.jestconfig.json

@@ -1,17 +0,0 @@
-{
-  "verbose": false,
-  "rootDir": "..",
-  "roots": [
-    "<rootDir>/server",
-    "<rootDir>/shared"
-  ],
-  "moduleNameMapper": {
-    "^@server/(.*)$": "<rootDir>/server/$1",
-    "^@shared/(.*)$": "<rootDir>/shared/$1"
-  },
-  "setupFiles": [
-    "<rootDir>/__mocks__/console.js",
-    "./server/test/setup.ts"
-  ],
-  "testEnvironment": "node"
-}

server/__mocks__/bull.ts

@@ -19,9 +19,7 @@ export default class Queue {
     const job = this.createJob(data);
 
     if (!this.handler) {
-      throw Error(
-        "Mocking version requires handler to be set before first add()"
-      );
+      return;
     }
 
     this.handler(job, this.done);

server/test/setup.ts

@@ -22,6 +22,9 @@ jest.mock("bull");
 // This is needed for the relative manual mock to be picked up
 jest.mock("../queues");
 
+// Avoid "Yjs was already imported" errors in the test environment
+jest.mock("yjs");
+
 // We never want to make real S3 requests in test environment
 jest.mock("aws-sdk", () => {
   const mS3 = {