const {
    ETHEREUM_MAINNET_CHAIN_ID,
    DEFAULT_RPC_URL,
    BIP44_ETH_PATH,
    ERC20_ABI,
} = require("../src/shared/constants");

describe("constants", () => {
    test("exports expected chain ID", () => {
        expect(ETHEREUM_MAINNET_CHAIN_ID).toBe("0x1");
    });

    test("exports a default RPC URL", () => {
        expect(typeof DEFAULT_RPC_URL).toBe("string");
        expect(DEFAULT_RPC_URL.startsWith("https://")).toBe(true);
    });

    test("exports BIP-44 Ethereum derivation path", () => {
        expect(BIP44_ETH_PATH).toBe("m/44'/60'/0'/0");
    });

    test("exports ERC-20 ABI with expected functions", () => {
        expect(Array.isArray(ERC20_ABI)).toBe(true);
        expect(ERC20_ABI.length).toBeGreaterThan(0);
        const joined = ERC20_ABI.join(" ");
        expect(joined).toContain("balanceOf");
        expect(joined).toContain("transfer");
    });
});