feat(sp7): wire LineReconciliationTab into ClaimDrawer

src/hooks/useLineReconciliation.test.ts

@@ -0,0 +1,56 @@
+// @vitest-environment happy-dom
+(globalThis as { IS_REACT_ACT_ENVIRONMENT?: boolean }).IS_REACT_ACT_ENVIRONMENT = true;
+
+import { afterEach, describe, expect, it, vi } from "vitest";
+import { cleanup, renderHook, waitFor } from "@testing-library/react";
+import { useLineReconciliation } from "./useLineReconciliation";
+
+afterEach(() => {
+  cleanup();
+  vi.unstubAllGlobals();
+});
+
+describe("useLineReconciliation", () => {
+  it("fetches the line reconciliation data on mount", async () => {
+    const fixture = {
+      claimId: "CLM-1",
+      summary: {
+        billedTotal: "100",
+        paidTotal: "80",
+        adjustmentTotal: "20",
+        matchedLines: 1,
+        totalLines: 1,
+      },
+      lines: [],
+    };
+    vi.stubGlobal(
+      "fetch",
+      vi.fn().mockResolvedValue({
+        ok: true,
+        json: async () => fixture,
+      })
+    );
+    const { result } = renderHook(() => useLineReconciliation("CLM-1"));
+    await waitFor(() => expect(result.current.loading).toBe(false));
+    expect(result.current.data).toEqual(fixture);
+  });
+
+  it("returns null when claimId is null", () => {
+    const { result } = renderHook(() => useLineReconciliation(null));
+    expect(result.current.data).toBeNull();
+    expect(result.current.loading).toBe(false);
+  });
+
+  it("exposes an error when fetch fails", async () => {
+    vi.stubGlobal(
+      "fetch",
+      vi.fn().mockResolvedValue({
+        ok: false,
+        status: 500,
+        json: async () => ({}),
+      })
+    );
+    const { result } = renderHook(() => useLineReconciliation("CLM-1"));
+    await waitFor(() => expect(result.current.error).not.toBeNull());
+  });
+});