84 lines
2.3 KiB
JavaScript
84 lines
2.3 KiB
JavaScript
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var test = require('tape');
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var watchify = require('../');
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var browserify = require('browserify');
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var vm = require('vm');
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var fs = require('fs');
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var path = require('path');
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var mkdirp = require('mkdirp');
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var through = require('through2');
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var os = require('os');
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var tmpdir = path.join((os.tmpdir || os.tmpDir)(), 'watchify-' + Math.random());
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var main = path.join(tmpdir, 'main.js');
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var file = path.join(tmpdir, 'dep.jsnum');
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mkdirp.sync(tmpdir);
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fs.writeFileSync(main, 'require("./dep.jsnum")');
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fs.writeFileSync(file, 'console.log(555)');
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function someTransform(file) {
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if (!/\.jsnum$/.test(file)) {
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return through();
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}
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function write (chunk, enc, next) {
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if (/\d/.test(chunk)) {
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this.push(chunk);
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} else {
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this.emit('error', new Error('No number in this chunk'));
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}
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next();
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}
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return through(write);
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}
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test('errors in transform', function (t) {
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t.plan(6);
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var b = browserify(main, watchify.args);
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b.transform(someTransform);
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var w = watchify(b);
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w.bundle(function (err, src) {
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t.ifError(err);
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t.equal(run(src), '555\n');
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breakTheBuild();
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});
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function breakTheBuild() {
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setTimeout(function() {
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fs.writeFileSync(file, 'console.log()');
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}, 1000);
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w.once('update', function () {
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w.bundle(function (err, src) {
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t.ok(err instanceof Error, 'should be error');
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t.ok(/^No number in this chunk/.test(err.message));
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fixTheBuild();
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});
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});
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}
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function fixTheBuild() {
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setTimeout(function() {
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fs.writeFileSync(file, 'console.log(333)');
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}, 1000);
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var safety = setTimeout(function() {
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t.fail("gave up waiting");
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w.close();
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t.end();
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}, 5000);
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w.once('update', function () {
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clearTimeout(safety);
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w.bundle(function (err, src) {
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t.ifError(err);
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t.equal(run(src), '333\n');
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w.close();
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});
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});
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}
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});
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function run (src) {
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var output = '';
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function log (msg) { output += msg + '\n' }
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vm.runInNewContext(src, { console: { log: log } });
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return output;
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}
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