infura-mcp

import { getMaxPriorityFeePerGas } from "../../../tools/ethereum/getMaxPriorityFeePerGas"; import { INFURA_CHAIN_URLS } from "../../../config/chains"; global.fetch = jest.fn(); describe("eth_maxPriorityFeePerGas", () => { afterEach(() => { jest.clearAllMocks(); }); it("fetches max priority fee successfully", async () => { const mockResponse = { json: async () => ({ result: "0x55d4a80" }) } as Response; (fetch as jest.MockedFunction<typeof fetch>).mockResolvedValueOnce(mockResponse); const result = await getMaxPriorityFeePerGas.handler({}); expect(result.content?.[0]?.text).toContain("Max priority fee per gas on chainid 1"); expect(result.content?.[0]?.text).toContain("0x55d4a80"); expect(fetch).toHaveBeenCalledWith( INFURA_CHAIN_URLS[1], expect.objectContaining({ body: expect.stringContaining('"eth_maxPriorityFeePerGas"') }) ); }); it("handles unsupported chain ID", async () => { const result = await getMaxPriorityFeePerGas.handler({ chainid: 9999 }); expect(result.content?.[0]?.text).toContain("Unsupported chain ID: 9999"); }); it("handles RPC error response", async () => { const mockResponse = { json: async () => ({ error: { message: "RPC failed" } }) } as Response; (fetch as jest.MockedFunction<typeof fetch>).mockResolvedValueOnce(mockResponse); const result = await getMaxPriorityFeePerGas.handler({}); expect(result.content?.[0]?.text).toContain( "Error fetching max priority fee per gas: RPC failed" ); }); 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 getMaxPriorityFeePerGas.handler({}); expect(result.content?.[0]?.text).toContain( "Error fetching max priority fee per gas: Unknown error" ); }); it("handles network errors", async () => { (fetch as jest.MockedFunction<typeof fetch>).mockRejectedValueOnce(new Error("Network down")); const result = await getMaxPriorityFeePerGas.handler({}); expect(result.content?.[0]?.text).toContain( "Error fetching max priority fee per gas: Network down" ); }); it("handles non-Error thrown object", async () => { (fetch as jest.MockedFunction<typeof fetch>).mockRejectedValueOnce("Unexpected failure"); const result = await getMaxPriorityFeePerGas.handler({}); expect(result.content?.[0]?.text).toContain( "Error fetching max priority fee per gas: Unexpected failure" ); }); it("handles unknown object errors correctly", async () => { (fetch as jest.MockedFunction<typeof fetch>).mockRejectedValueOnce({ code: 123, info: "bad", }); const result = await getMaxPriorityFeePerGas.handler({}); expect(result.content?.[0]?.text).toContain('{"code":123,"info":"bad"}'); }); });