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74 lines
2.8 KiB
TypeScript
74 lines
2.8 KiB
TypeScript
import type { Page, Route } from '@playwright/test';
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// The mock mint lives on a .test origin that never resolves - every request
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// to it is intercepted by Playwright and fulfilled in-process, so the specs
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// never touch the network. Protocol shapes mirror lnurlcash-kit's client:
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// the informational GET on the note URL (fetchNoteInfo) expects an LUD-03
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// withdrawRequest echoing the queried k1, or the LNURL ERROR envelope; the
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// rotation GET on the callback (rotateNote) expects {status: "OK"}.
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export const MINT_ORIGIN = 'https://mint.test';
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export const NOTE_PATH = '/note';
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export const CALLBACK_PATH = '/callback';
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const escapeRegExp = (value: string): string =>
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value.replace(/[.*+?^${}()|[\]\\]/g, '\\$&');
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const fulfillJson = async (route: Route, body: unknown): Promise<void> => {
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await route.fulfill({
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status: 200,
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contentType: 'application/json',
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// the app runs on http://localhost:9333, so the mint is cross-origin -
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// keep Chromium's CORS check on the fulfilled response happy
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headers: { 'Access-Control-Allow-Origin': '*' },
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body: JSON.stringify(body),
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});
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};
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interface MockNoteInfoOptions {
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// note value in msat, reported as maxWithdrawable
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amountMsat?: number;
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// when set, the mint answers the ERROR envelope with this reason instead
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// (a reason matching /spent/i surfaces the "already been spent" UI)
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spentReason?: string;
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}
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export class MintMocker {
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constructor(private page: Page) {}
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// The note's informational GET: a spec-shaped withdrawRequest, or the
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// ERROR envelope for a note the mint considers spent. The kit validates
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// that the service echoes back the queried k1, so read it off the request.
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async mockNoteInfo(options: MockNoteInfoOptions): Promise<void> {
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await this.page.route(
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new RegExp(`^${escapeRegExp(MINT_ORIGIN + NOTE_PATH)}\\?`),
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async (route: Route) => {
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if (options.spentReason !== undefined) {
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await fulfillJson(route, { status: 'ERROR', reason: options.spentReason });
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return;
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}
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const k1 = new URL(route.request().url()).searchParams.get('k1') ?? '';
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await fulfillJson(route, {
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tag: 'withdrawRequest',
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callback: `${MINT_ORIGIN}${CALLBACK_PATH}`,
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k1,
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minWithdrawable: options.amountMsat ?? 0,
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maxWithdrawable: options.amountMsat ?? 0,
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defaultDescription: 'mock mint note',
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});
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},
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);
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}
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// The rotation callback GET (k1 + h params): confirm with the OK envelope.
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// No sig is returned - a plain LUD-03-style service that speaks rotate but
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// does not sign notes.
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async mockRotateOk(): Promise<void> {
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await this.page.route(
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new RegExp(`^${escapeRegExp(MINT_ORIGIN + CALLBACK_PATH)}\\?`),
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async (route: Route) => {
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await fulfillJson(route, { status: 'OK' });
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},
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);
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}
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}
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