@metamask/snaps-jest
Version:
A Jest preset for end-to-end testing MetaMask Snaps, including a Jest environment, and a set of Jest matchers
93 lines • 3.69 kB
JavaScript
;
var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
if (k2 === undefined) k2 = k;
var desc = Object.getOwnPropertyDescriptor(m, k);
if (!desc || ("get" in desc ? !m.__esModule : desc.writable || desc.configurable)) {
desc = { enumerable: true, get: function() { return m[k]; } };
}
Object.defineProperty(o, k2, desc);
}) : (function(o, m, k, k2) {
if (k2 === undefined) k2 = k;
o[k2] = m[k];
}));
var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {
Object.defineProperty(o, "default", { enumerable: true, value: v });
}) : function(o, v) {
o["default"] = v;
});
var __importStar = (this && this.__importStar) || function (mod) {
if (mod && mod.__esModule) return mod;
var result = {};
if (mod != null) for (var k in mod) if (k !== "default" && Object.prototype.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);
__setModuleDefault(result, mod);
return result;
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.startServer = void 0;
const node_1 = require("@metamask/snaps-utils/node");
const utils_1 = require("@metamask/utils");
const express_1 = __importStar(require("express/index.js"));
const fs_1 = require("fs");
const path_1 = require("path");
const logger_1 = require("./logger.cjs");
/**
* Check that:
*
* - The root directory exists.
* - The root directory contains a `snap.manifest.json` file.
* - The file path in the manifest exists.
*
* @param root - The root directory.
* @throws If any of the checks fail.
*/
async function assertRoot(root) {
if (!root) {
throw new Error('You must specify a root directory.');
}
if (!(await (0, node_1.isDirectory)(root, false))) {
throw new Error(`Root directory "${root}" is not a directory.`);
}
const manifestPath = (0, path_1.resolve)(root, 'snap.manifest.json');
const manifest = await fs_1.promises
.readFile(manifestPath, 'utf8')
.then(JSON.parse);
(0, node_1.assertIsSnapManifest)(manifest);
const filePath = (0, path_1.resolve)(root, manifest.source.location.npm.filePath);
if (!(await (0, node_1.isFile)(filePath))) {
throw new Error(`File "${filePath}" does not exist, or is not a file. Did you forget to build your snap?`);
}
}
/**
* Start an HTTP server on `localhost` with a random port. This is used to serve
* the static files for the environment.
*
* @param options - The options to use.
* @param options.port - The port to use for the server.
* @param options.root - The root directory to serve from the server.
* @returns The HTTP server.
*/
async function startServer(options) {
await assertRoot(options.root);
const log = (0, utils_1.createModuleLogger)(logger_1.rootLogger, 'server');
const app = (0, express_1.default)();
app.use((_request, response, next) => {
response.header('Access-Control-Allow-Origin', '*');
response.header('Access-Control-Allow-Credentials', 'true');
response.header('Access-Control-Allow-Methods', 'GET, OPTIONS');
response.header('Access-Control-Allow-Headers', 'Content-Type');
next();
});
app.use((0, express_1.static)((0, path_1.resolve)(process.cwd(), options.root)));
return await new Promise((resolve, reject) => {
const server = app.listen(options.port, (error) => {
if (error) {
log(error);
reject(error);
return;
}
resolve(server);
});
});
}
exports.startServer = startServer;
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