refactor(test): global initialisation

src/public/app/test-setup.ts

@@ -0,0 +1,51 @@
+import { beforeAll, vi } from "vitest";
+import $ from "jquery";
+
+beforeAll(() => {
+    injectGlobals();
+    vi.mock("./services/ws.js", mockWebsocket);
+    vi.mock("./services/server.js", mockServer);
+});
+
+function injectGlobals() {
+    const uncheckedWindow = window as any;
+    uncheckedWindow.$ = $;
+    uncheckedWindow.WebSocket = () => {};
+    uncheckedWindow.glob = {
+        isMainWindow: true
+    };
+}
+
+function mockWebsocket() {
+    return {
+        default: {
+            subscribeToMessages(callback: (message: unknown) => void) {
+                // Do nothing.
+            }
+        }
+    }
+}
+
+function mockServer() {
+    return {
+        default: {
+            async get(url: string) {
+                if (url === "options") {
+                    return {};
+                }
+
+                if (url === "keyboard-actions") {
+                    return [];
+                }
+
+                if (url === "tree") {
+                    return {
+                        branches: [],
+                        notes: [],
+                        attributes: []
+                    }
+                }
+            }
+        }
+    };
+}