chore: setup unit & integration tests

apps/web/pages/_app.test.tsx

@@ -0,0 +1,29 @@
+import { render } from "@testing-library/react"
+import { AppProps } from "next/app"
+import MyApp from "./_app"
+
+// Mock router object with required properties
+const router = {
+  basePath: "",
+  pathname: "/",
+  query: {},
+  asPath: "/",
+}
+
+describe("MyApp", () => {
+  it("should render a component with page props", () => {
+    const props: AppProps = {
+      Component: ({ title }) => (
+        <>
+          <div>Test Component</div>
+          <div>{title}</div>
+        </>
+      ),
+      pageProps: { title: "Test Page" },
+      router: router as never, // Include mocked router object in props
+    }
+    const { getByText } = render(<MyApp {...props} />)
+    expect(getByText("Test Component")).toBeInTheDocument()
+    expect(getByText("Test Page")).toBeInTheDocument()
+  })
+})