import { apiClient } from "../network/api";
import { getValidators } from "./getValidators";

jest.mock("../network/api");

describe("getValidators", () => {
  beforeEach(() => {
    jest.clearAllMocks();
  });

  it("should return formatted validators with APY", async () => {
    (apiClient.getNodes as jest.Mock).mockResolvedValue({
      nodes: [
        {
          node_id: 1,
          node_account_id: "0.0.3",
          description: "Hosted by Ledger | Paris, France",
          stake: 1000000,
          reward_rate_start: 3538,
        },
      ],
      nextCursor: null,
    });

    const result = await getValidators();

    expect(result.items).toHaveLength(1);
    expect(result.items[0]).toMatchObject({
      address: "0.0.3",
      nodeId: "1",
      name: "Ledger",
      description: "Hosted by Ledger | Paris, France",
      balance: BigInt(1000000),
      apy: expect.any(Number),
    });
    expect(result.items[0].apy).toBeCloseTo(0.01291, 5);
  });

  it("should handle pagination cursor", async () => {
    (apiClient.getNodes as jest.Mock).mockResolvedValue({
      nodes: [],
      nextCursor: "123",
    });

    const result = await getValidators("100");

    expect(apiClient.getNodes).toHaveBeenCalledWith({ cursor: "100", fetchAllPages: false });
    expect(result.next).toBe("123");
  });
});