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index.js
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index.js
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const includes = require("lodash/includes");
const readdir = require("fs-readdir-recursive");
const helper = require("babel-helper-fixtures");
const assert = require("assert");
const rimraf = require("rimraf");
const outputFileSync = require("output-file-sync");
const child = require("child_process");
const merge = require("lodash/merge");
const path = require("path");
const chai = require("chai");
const fs = require("fs");
const fixtureLoc = path.join(__dirname, "fixtures");
const tmpLoc = path.join(__dirname, "tmp");
const presetLocs = [
path.join(__dirname, "../../babel-preset-es2015"),
path.join(__dirname, "../../babel-preset-react")
].join(",");
const pluginLocs = [
path.join(__dirname, "/../../babel-plugin-transform-strict-mode"),
path.join(__dirname, "/../../babel-plugin-transform-es2015-modules-commonjs"),
].join(",");
const readDir = function (loc) {
const files = {};
if (fs.existsSync(loc)) {
readdir(loc).forEach(function (filename) {
files[filename] = helper.readFile(path.join(loc, filename));
});
}
return files;
};
const saveInFiles = function (files) {
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) {
assert.ok(includes(stderr, expectStderr), "stderr " + JSON.stringify(stderr) + " didn't contain " + JSON.stringify(expectStderr));
} else {
chai.expect(stderr).to.equal(expectStderr, "stderr didn't match");
}
} else if (stderr) {
throw new Error("stderr:\n" + stderr);
}
const expectStdout = opts.stdout.trim();
stdout = stdout.trim();
stdout = stdout.replace(/\\/g, "/");
if (opts.stdout) {
if (opts.stdoutContains) {
assert.ok(includes(stdout, expectStdout), "stdout " + JSON.stringify(stdout) + " didn't contain " + JSON.stringify(expectStdout));
} else {
chai.expect(stdout).to.equal(expectStdout, "stdout didn't match");
}
} else if (stdout) {
throw new Error("stdout:\n" + stdout);
}
Object.keys(opts.outFiles, function (filename) {
const expect = opts.outFiles[filename];
const actual = helper.readFile(filename);
chai.expect(actual).to.equal(expect, "out-file " + filename);
});
};
const buildTest = function (binName, testName, opts) {
const binLoc = path.join(__dirname, "../lib", binName);
return function (callback) {
clear();
saveInFiles(opts.inFiles);
let args = [binLoc];
if (binName !== "babel-external-helpers") {
args.push("--presets", presetLocs, "--plugins", pluginLocs);
}
if (binName === "babel-node") {
args.push("--only", "packages/*/test");
}
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.join(" ") + ": " + err.message;
}
callback(err);
});
if (opts.stdin) {
spawn.stdin.write(opts.stdin);
spawn.stdin.end();
}
};
};
const clear = function () {
process.chdir(__dirname);
if (fs.existsSync(tmpLoc)) rimraf.sync(tmpLoc);
fs.mkdirSync(tmpLoc);
process.chdir(tmpLoc);
};
fs.readdirSync(fixtureLoc).forEach(function (binName) {
if (binName[0] === ".") return;
const suiteLoc = path.join(fixtureLoc, binName);
describe("bin/" + binName, function () {
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"));
opts.inFiles = readDir(path.join(testLoc, "in-files"));
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));
});
});
});