AutistMask/tests/settingsEndpointCheck.test.js

// What reaches the console when an endpoint check in Settings fails.
//
// fetch refuses a URL with a user name and password in it, or one it cannot
// parse, with an error whose message carries the whole URL: the password, and
// any API key in the path or query string. The checks behind the RPC and
// Blockscout Save buttons printed that message
// (https://git.eeqj.de/sneak/AutistMask/issues/410); they now name the
// endpoint by its origin.
//
// The real fetch runs; it throws before making any request. Debug mode is on,
// so every log level is printed.

const SECRETS = ["SECRETPASS789", "PATHKEY123", "QUERYTOKEN456"];
const RPC_WITH_PASSWORD =
    "https://user:SECRETPASS789@rpc.example.invalid/v3/PATHKEY123?token=QUERYTOKEN456";
// Port 99999 is out of range, so the URL does not parse.
const RPC_UNPARSEABLE =
    "https://rpc.example.invalid:99999/v3/PATHKEY123?token=QUERYTOKEN456";
const BLOCKSCOUT_WITH_PASSWORD =
    "https://user:SECRETPASS789@explorer.example.invalid/PATHKEY123/api/v2";

const SAVED_RPC = "https://saved-rpc.example.invalid";
const SAVED_BLOCKSCOUT = "https://saved-explorer.example.invalid/api/v2";

let elements;
let flashes;
let printed;
let state;

// A stand-in for one DOM node: enough of an element for init() to set
// properties on it and hang listeners off it.
function fakeElement() {
    return {
        value: "",
        checked: false,
        textContent: "",
        href: "",
        style: {},
        dataset: {},
        classList: { add() {}, remove() {} },
        listeners: {},
        addEventListener(event, handler) {
            this.listeners[event] = handler;
        },
        querySelectorAll: () => [],
    };
}

function element(id) {
    return (elements[id] ||= fakeElement());
}

function loadSettingsView() {
    elements = {};
    flashes = [];

    jest.resetModules();

    jest.doMock("../src/popup/views/helpers", () => ({
        $: element,
        showView: () => {},
        updateDebugBanner: () => {},
        showFlash: (msg) => flashes.push(msg),
        escapeHtml: (s) => s,
        flashCopyFeedback: () => {},
        goBack: () => {},
        pushCurrentView: () => {},
        onViewLeave: () => {},
        VIEWS: [],
    }));

    state = require("../src/shared/state").state;
    state.rpcUrl = SAVED_RPC;
    state.blockscoutUrl = SAVED_BLOCKSCOUT;
    require("../src/shared/log").setRuntimeDebug(true);

    require("../src/popup/views/settings").init({});
}

async function save(fieldId, buttonId, typed) {
    element(fieldId).value = typed;
    await element(buttonId).listeners.click();
}

// The check failed, nothing was saved, and nothing printed carries the
// password or the key.
function expectFailedWithoutSecrets(label) {
    expect(flashes).toContain("Could not reach endpoint.");
    expect(state.rpcUrl).toBe(SAVED_RPC);
    expect(state.blockscoutUrl).toBe(SAVED_BLOCKSCOUT);
    const line = printed.find((text) => text.includes(label));
    expect(line).toBeDefined();
    const all = printed.join("\n");
    for (const secret of SECRETS) {
        expect(all).not.toContain(secret);
    }
    return line;
}

beforeEach(() => {
    printed = [];
    for (const method of ["log", "warn", "error"]) {
        jest.spyOn(console, method).mockImplementation((...args) => {
            printed.push(args.map(String).join(" "));
        });
    }
    globalThis.chrome = {
        runtime: { sendMessage: () => {} },
        storage: { local: { get: async () => ({}), set: async () => {} } },
    };
});

afterEach(() => {
    jest.dontMock("../src/popup/views/helpers");
    delete globalThis.chrome;
    jest.restoreAllMocks();
});

test("fetch puts the whole URL in the error it throws for such a URL", async () => {
    for (const url of [RPC_WITH_PASSWORD, RPC_UNPARSEABLE]) {
        const error = await fetch(url).catch((e) => e);
        expect(error.message).toContain("PATHKEY123");
    }
});

test("the RPC check of a URL with a user name and password", async () => {
    loadSettingsView();
    await save("settings-rpc", "btn-save-rpc", RPC_WITH_PASSWORD);
    const line = expectFailedWithoutSecrets("RPC validation fetch failed");
    expect(line).toContain("https://rpc.example.invalid");
});

test("the RPC check of a URL that does not parse", async () => {
    loadSettingsView();
    await save("settings-rpc", "btn-save-rpc", RPC_UNPARSEABLE);
    expectFailedWithoutSecrets("RPC validation fetch failed");
});

test("the Blockscout check of a URL with a user name and password", async () => {
    loadSettingsView();
    await save(
        "settings-blockscout",
        "btn-save-blockscout",
        BLOCKSCOUT_WITH_PASSWORD,
    );
    const line = expectFailedWithoutSecrets("Blockscout validation failed");
    expect(line).toContain("https://explorer.example.invalid");
});