test: add specs

Author: anudeodhar

src/modules/approval-requests/hooks/useApprovalRequest.test.tsx

@@ -0,0 +1,128 @@
+import { renderHook, act } from "@testing-library/react-hooks";
+import { useApprovalRequest } from "./useApprovalRequest";
+
+global.fetch = jest.fn();
+
+const mockApprovalRequest = {
+  id: "1",
+  status: "active",
+};
+
+describe("useApprovalRequest", () => {
+  beforeEach(() => {
+    jest.clearAllMocks();
+  });
+
+  it("fetches approval request on mount", async () => {
+    (fetch as jest.Mock).mockResolvedValueOnce({
+      ok: true,
+      json: async () => ({ approval_request: mockApprovalRequest }),
+    });
+
+    const { result, waitForNextUpdate } = renderHook(() =>
+      useApprovalRequest({
+        approvalWorkflowInstanceId: "workflow123",
+        approvalRequestId: "1234",
+        enablePolling: false,
+      })
+    );
+
+    expect(result.current.isLoading).toBe(true);
+
+    await waitForNextUpdate();
+
+    expect(fetch).toHaveBeenCalledWith(
+      "/api/v2/approval_workflow_instances/workflow123/approval_requests/1234"
+    );
+    expect(result.current.approvalRequest).toEqual(mockApprovalRequest);
+    expect(result.current.isLoading).toBe(false);
+  });
+
+  it("polls data when polling is enabled and status is not terminal", async () => {
+    jest.useFakeTimers();
+
+    (fetch as jest.Mock).mockResolvedValue({
+      ok: true,
+      json: async () => ({ approval_request: mockApprovalRequest }),
+    });
+
+    const { waitForNextUpdate } = renderHook(() =>
+      useApprovalRequest({
+        approvalWorkflowInstanceId: "workflow123",
+        approvalRequestId: "1234",
+        enablePolling: true,
+      })
+    );
+
+    await waitForNextUpdate();
+
+    expect(fetch).toHaveBeenCalledTimes(1);
+
+    act(() => {
+      jest.advanceTimersByTime(10000);
+    });
+
+    await waitForNextUpdate();
+
+    expect(fetch).toHaveBeenCalledTimes(2);
+  });
+
+  it("does not poll data when polling is disabled", async () => {
+    jest.useFakeTimers();
+
+    (fetch as jest.Mock).mockResolvedValue({
+      ok: true,
+      json: async () => ({ approval_request: mockApprovalRequest }),
+    });
+
+    const { waitForNextUpdate } = renderHook(() =>
+      useApprovalRequest({
+        approvalWorkflowInstanceId: "workflow123",
+        approvalRequestId: "1234",
+        enablePolling: false,
+      })
+    );
+
+    await waitForNextUpdate();
+
+    expect(fetch).toHaveBeenCalledTimes(1);
+
+    act(() => {
+      jest.advanceTimersByTime(10000);
+    });
+
+    expect(fetch).toHaveBeenCalledTimes(1);
+  });
+
+  it("does not poll data when status is terminal", async () => {
+    jest.useFakeTimers();
+
+    const terminalApprovalRequest = {
+      ...mockApprovalRequest,
+      status: "approved",
+    };
+
+    (fetch as jest.Mock).mockResolvedValue({
+      ok: true,
+      json: async () => ({ approval_request: terminalApprovalRequest }),
+    });
+
+    const { waitForNextUpdate } = renderHook(() =>
+      useApprovalRequest({
+        approvalWorkflowInstanceId: "workflow123",
+        approvalRequestId: "1234",
+        enablePolling: true,
+      })
+    );
+
+    await waitForNextUpdate();
+
+    expect(fetch).toHaveBeenCalledTimes(1);
+
+    act(() => {
+      jest.advanceTimersByTime(10000);
+    });
+
+    expect(fetch).toHaveBeenCalledTimes(1);
+  });
+});