/
index.js
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/
index.js
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import includes from "lodash/includes";
import readdir from "fs-readdir-recursive";
import * as helper from "@babel/helper-fixtures";
import rimraf from "rimraf";
import { sync as makeDirSync } from "make-dir";
import child from "child_process";
import merge from "lodash/merge";
import path from "path";
import fs from "fs";
import { fileURLToPath } from "url";
import { createRequire } from "module";
const require = createRequire(import.meta.url);
const dirname = path.dirname(fileURLToPath(import.meta.url));
const fixtureLoc = path.join(dirname, "fixtures");
const tmpLoc = path.join(dirname, "tmp");
const fileFilter = function (x) {
return x !== ".DS_Store";
};
const outputFileSync = function (filePath, data) {
makeDirSync(path.dirname(filePath));
fs.writeFileSync(filePath, data);
};
const readDir = function (loc, filter) {
const files = {};
if (fs.existsSync(loc)) {
readdir(loc, filter).forEach(function (filename) {
files[filename] = helper.readFile(path.join(loc, filename));
});
}
return files;
};
const saveInFiles = function (files) {
// Place an empty .babelrc in each test so tests won't unexpectedly get to repo-level config.
outputFileSync(".babelrc", "{}");
Object.keys(files).forEach(function (filename) {
const content = files[filename];
outputFileSync(filename, content);
});
};
const assertTest = function (stdout, stderr, opts) {
const expectStderr = opts.stderr.trim();
stderr = stderr.trim();
if (opts.stderr) {
if (opts.stderrContains) {
expect(includes(stderr, expectStderr)).toBeTruthy();
} else {
expect(stderr).toBe(expectStderr);
}
} else if (stderr) {
throw new Error("stderr:\n" + stderr + "\n\nstdout:\n" + stdout);
}
const expectStdout = opts.stdout.trim();
stdout = stdout.trim();
stdout = stdout.replace(/\\/g, "/");
if (opts.stdout) {
if (opts.stdoutContains) {
expect(includes(stdout, expectStdout)).toBeTruthy();
} else {
expect(stdout).toBe(expectStdout);
}
} else if (stdout) {
throw new Error("stdout:\n" + stdout);
}
if (opts.outFiles) {
const actualFiles = readDir(path.join(tmpLoc));
Object.keys(actualFiles).forEach(function (filename) {
if (!Object.prototype.hasOwnProperty.call(opts.inFiles, filename)) {
const expected = opts.outFiles[filename];
const actual = actualFiles[filename];
expect(expected).not.toBeUndefined();
if (expected) {
expect(actual).toBe(expected);
}
}
});
Object.keys(opts.outFiles).forEach(function (filename) {
expect(actualFiles).toHaveProperty(filename);
});
}
};
const buildTest = function (binName, testName, opts) {
const binLoc = path.join(dirname, "../lib", binName);
return function (callback) {
saveInFiles(opts.inFiles);
let args = [binLoc];
args.push("--config-file", "../config.json");
args = args.concat(opts.args);
const spawn = child.spawn(process.execPath, args);
let stderr = "";
let stdout = "";
spawn.stderr.on("data", function (chunk) {
stderr += chunk;
});
spawn.stdout.on("data", function (chunk) {
stdout += chunk;
});
spawn.on("close", function () {
let err;
try {
assertTest(stdout, stderr, opts);
} catch (e) {
err = e;
}
if (err) {
err.message =
args.map(arg => `"${arg}"`).join(" ") + ": " + err.message;
}
callback(err);
});
if (opts.stdin) {
spawn.stdin.write(opts.stdin);
spawn.stdin.end();
}
};
};
fs.readdirSync(fixtureLoc).forEach(function (binName) {
if (binName[0] === ".") return;
const suiteLoc = path.join(fixtureLoc, binName);
describe("bin/" + binName, function () {
let cwd;
beforeEach(() => {
cwd = process.cwd();
if (fs.existsSync(tmpLoc)) {
for (const child of fs.readdirSync(tmpLoc)) {
rimraf.sync(path.join(tmpLoc, child));
}
} else {
fs.mkdirSync(tmpLoc);
}
process.chdir(tmpLoc);
});
afterEach(() => {
process.chdir(cwd);
});
fs.readdirSync(suiteLoc).forEach(function (testName) {
if (testName[0] === ".") return;
const testLoc = path.join(suiteLoc, testName);
const opts = {
args: [],
};
const optionsLoc = path.join(testLoc, "options.json");
if (fs.existsSync(optionsLoc)) merge(opts, require(optionsLoc));
["stdout", "stdin", "stderr"].forEach(function (key) {
const loc = path.join(testLoc, key + ".txt");
if (fs.existsSync(loc)) {
opts[key] = helper.readFile(loc);
} else {
opts[key] = opts[key] || "";
}
});
opts.outFiles = readDir(path.join(testLoc, "out-files"), fileFilter);
opts.inFiles = readDir(path.join(testLoc, "in-files"), fileFilter);
const babelrcLoc = path.join(testLoc, ".babelrc");
if (fs.existsSync(babelrcLoc)) {
// copy .babelrc file to tmp directory
opts.inFiles[".babelrc"] = helper.readFile(babelrcLoc);
}
it(testName, buildTest(binName, testName, opts), 20000);
});
});
});