getTransactionByHash.test.ts•3.65 kB
import { getTransactionByHash } from "../../../tools/ethereum/getTransactionByHash";
global.fetch = jest.fn();
describe("getTransactionByHash", () => {
const hash =
"0xbb3a336e3f823ec18197f1e13ee875700f08f03e2cab75f0d0b118dabb44cba0";
afterEach(() => {
jest.clearAllMocks();
});
it("fetches transaction successfully", async () => {
const mockTx = {
hash,
blockNumber: "0x112418d",
transactionIndex: "0x0",
};
const mockResponse = { json: async () => ({ result: mockTx }) } as Response;
(fetch as jest.MockedFunction<typeof fetch>).mockResolvedValueOnce(mockResponse);
const result = await getTransactionByHash.handler({ hash });
expect(result.content?.[0]?.text).toContain("Transaction for hash");
expect(result.content?.[1]?.text).toContain(hash);
});
it("returns message when transaction not found", async () => {
const mockResponse = { json: async () => ({ result: null }) } as Response;
(fetch as jest.MockedFunction<typeof fetch>).mockResolvedValueOnce(mockResponse);
const result = await getTransactionByHash.handler({ hash });
expect(result.content?.[0]?.text).toContain("No transaction found");
});
it("handles unsupported chain ID", async () => {
const result = await getTransactionByHash.handler({ hash, chainid: 9999 });
expect(result.content?.[0]?.text).toContain("Unsupported chain ID: 9999");
});
it("handles RPC error response", async () => {
const mockResponse = { json: async () => ({ error: { message: "transaction not found" } }) } as Response;
(fetch as jest.MockedFunction<typeof fetch>).mockResolvedValueOnce(mockResponse);
const result = await getTransactionByHash.handler({ hash });
expect(result.content?.[0]?.text).toContain("Error fetching transaction: transaction not found");
});
it("handles unknown RPC response (no result, no error)", async () => {
const mockResponse = { json: async () => ({}) } as Response;
(fetch as jest.MockedFunction<typeof fetch>).mockResolvedValueOnce(mockResponse);
const result = await getTransactionByHash.handler({ hash });
expect(result.content?.[0]?.text).toContain("Error fetching transaction: Unknown error");
});
it("handles network errors", async () => {
(fetch as jest.MockedFunction<typeof fetch>).mockRejectedValueOnce(new Error("Network down"));
const result = await getTransactionByHash.handler({ hash });
expect(result.content?.[0]?.text).toContain("Error fetching transaction: Network down");
});
});
describe("getTransactionByHash error handling variations", () => {
const hash =
"0xbb3a336e3f823ec18197f1e13ee875700f08f03e2cab75f0d0b118dabb44cba0";
afterEach(() => {
jest.clearAllMocks();
});
it("handles Error objects correctly", async () => {
(fetch as jest.MockedFunction<typeof fetch>).mockRejectedValueOnce(new Error("Boom"));
const result = await getTransactionByHash.handler({ hash });
expect(result.content?.[0]?.text).toContain("Boom");
});
it("handles string errors correctly", async () => {
(fetch as jest.MockedFunction<typeof fetch>).mockImplementationOnce(() => Promise.reject("weird failure"));
const result = await getTransactionByHash.handler({ hash });
expect(result.content?.[0]?.text).toContain("weird failure");
});
it("handles unknown object errors correctly", async () => {
(fetch as jest.MockedFunction<typeof fetch>).mockRejectedValueOnce({ code: 500, info: "internal" });
const result = await getTransactionByHash.handler({ hash });
expect(result.content?.[0]?.text).toContain('{"code":500,"info":"internal"}');
});
});