feat(frontend): add 6 GET methods (batches, batch, claims, remits, providers, activity) + tests

src/lib/api.test.ts

@@ -0,0 +1,73 @@
+import { describe, expect, it, vi, beforeEach, afterEach } from "vitest";
+import { api } from "./api";
+
+const originalFetch = global.fetch;
+const mockFetch = vi.fn();
+
+describe("api GET helpers", () => {
+  beforeEach(() => {
+    global.fetch = mockFetch as unknown as typeof fetch;
+    mockFetch.mockReset();
+  });
+  afterEach(() => {
+    global.fetch = originalFetch;
+    vi.restoreAllMocks();
+  });
+
+  it("listBatches hits /api/batches and unwraps body.items", async () => {
+    mockFetch.mockResolvedValueOnce(
+      new Response(JSON.stringify({ items: [] }), {
+        status: 200,
+        headers: { "content-type": "application/json" },
+      })
+    );
+    const out = await api.listBatches();
+    expect(out).toEqual([]);
+    expect(mockFetch).toHaveBeenCalledTimes(1);
+    const called = mockFetch.mock.calls[0][0] as string;
+    expect(called).toContain("/api/batches");
+    expect(called).not.toContain("?");
+  });
+
+  it("listClaims builds the right URL with status + sort + order", async () => {
+    mockFetch.mockResolvedValueOnce(
+      new Response(
+        JSON.stringify({ items: [], total: 0, returned: 0, has_more: false }),
+        { status: 200, headers: { "content-type": "application/json" } }
+      )
+    );
+    await api.listClaims({
+      status: "submitted",
+      sort: "billedAmount",
+      order: "desc",
+    });
+    const called = mockFetch.mock.calls[0][0] as string;
+    expect(called).toContain("/api/claims?");
+    expect(called).toContain("status=submitted");
+    expect(called).toContain("sort=billedAmount");
+    expect(called).toContain("order=desc");
+  });
+
+  it("getBatch returns the result with the right id in the URL", async () => {
+    mockFetch.mockResolvedValueOnce(
+      new Response(
+        JSON.stringify({
+          envelope: {
+            sender_id: "X",
+            receiver_id: "Y",
+            control_number: "1",
+            transaction_date: "2026-01-01",
+          },
+          claims: [],
+          summary: {},
+          kind: "835",
+        }),
+        { status: 200, headers: { "content-type": "application/json" } }
+      )
+    );
+    const out = await api.getBatch("abc");
+    expect(out).toBeTruthy();
+    const called = mockFetch.mock.calls[0][0] as string;
+    expect(called).toContain("/api/batches/abc");
+  });
+});