feature/IO-3587-Commision-Cut - Additional Testing / Test Harness improvements

client/tests/setup.js

@@ -1,5 +1,45 @@
-import { afterEach } from "vitest";
+import { afterEach, vi } from "vitest";
 import { cleanup } from "@testing-library/react";
 import "@testing-library/jest-dom";
 
+if (!window.matchMedia) {
+  Object.defineProperty(window, "matchMedia", {
+    writable: true,
+    value: vi.fn().mockImplementation((query) => ({
+      matches: false,
+      media: query,
+      onchange: null,
+      addListener: vi.fn(),
+      removeListener: vi.fn(),
+      addEventListener: vi.fn(),
+      removeEventListener: vi.fn(),
+      dispatchEvent: vi.fn()
+    }))
+  });
+}
+
+if (!window.ResizeObserver) {
+  window.ResizeObserver = class ResizeObserver {
+    observe() {}
+    unobserve() {}
+    disconnect() {}
+  };
+}
+
+if (!window.IntersectionObserver) {
+  window.IntersectionObserver = class IntersectionObserver {
+    observe() {}
+    unobserve() {}
+    disconnect() {}
+  };
+}
+
+if (!window.scrollTo) {
+  window.scrollTo = vi.fn();
+}
+
+if (!HTMLElement.prototype.scrollIntoView) {
+  HTMLElement.prototype.scrollIntoView = vi.fn();
+}
+
 afterEach(() => cleanup());