Add test

site/src/pages/WorkspacesPage/WorkspacesPage.test.tsx

@@ -1,4 +1,5 @@
 import { screen } from "@testing-library/react"
+import userEvent from "@testing-library/user-event"
 import { rest } from "msw"
 import * as CreateDayString from "util/createDayString"
 import { Language as WorkspacesTableBodyLanguage } from "../../components/WorkspacesTable/WorkspacesTableBody"
@@ -39,4 +40,14 @@ describe("WorkspacesPage", () => {
     // Then
     await screen.findByText(MockWorkspace.name)
   })
+
+  it("navigates to the next page of workspaces", async () => {
+    const user = userEvent.setup()
+    const { container } = render(<WorkspacesPage />)
+    const nextPage = await screen.findByRole("button", { name: "Next page" })
+    expect(nextPage).toBeEnabled()
+    await user.click(nextPage)
+    const pageButtons = await container.querySelectorAll(`button[name="Page button"]`)
+    expect(pageButtons.length).toBe(2)
+  })
 })