grunt-contrib-watch/test/tasks/helper.js
Kyle Robinson Young 855396972a Clean up tests
2013-02-21 15:28:42 -08:00

98 lines
2.6 KiB
JavaScript

var grunt = require('grunt');
var path = require('path');
module.exports = helper = {};
// where are fixtures are
helper.fixtures = path.join(__dirname, '..', 'fixtures');
// If verbose flag set, display output
helper.verboseLog = function() {};
if (grunt.util._.indexOf(process.argv, '-v') !== -1) {
helper.verboseLog = function() { console.log.apply(null, arguments); };
}
// helper for creating assertTasks for testing tasks in child processes
helper.assertTask = function assertTask(task, options) {
var spawn = require('child_process').spawn;
task = task || 'default';
options = options || {};
// get next/kill process trigger
var trigger = options.trigger || '.*(Waiting).*';
delete options.trigger;
// CWD to spawn
var cwd = options.cwd || process.cwd();
delete options.cwd;
// Use grunt this process uses
var spawnOptions = [process.argv[1]];
// Turn options into spawn options
grunt.util._.each(options, function(val, key) {
spawnOptions.push('--' + key);
spawnOptions.push(val);
});
// Add the tasks to run
spawnOptions = spawnOptions.concat(task);
// Return an interface for testing this task
function returnFunc(runs, done) {
// Spawn the node this process uses
var spawnGrunt = spawn(process.argv[0], spawnOptions, {cwd:cwd});
var out = '';
if (!grunt.util._.isArray(runs)) {
runs = [runs];
}
// Append a last function to kill spawnGrunt
runs.push(function() { spawnGrunt.kill('SIGINT'); });
// After watch starts waiting, run our commands then exit
spawnGrunt.stdout.on('data', function(data) {
data = grunt.log.uncolor(String(data));
out += data;
// If we should run the next function
var shouldRun = true;
// If our trigger has been found
if (trigger !== false) {
shouldRun = (new RegExp(trigger, 'gm')).test(data);
}
// Run the function
if (shouldRun) {
setTimeout(function() {
var run = runs.shift();
if (typeof run === 'function') { run(); }
}, 500);
}
});
// Throw errors for better testing
spawnGrunt.stderr.on('data', function(data) {
throw new Error(data);
});
// On process exit return what has been outputted
spawnGrunt.on('exit', function() {
done(out);
});
}
returnFunc.options = options;
return returnFunc;
};
// clean up files within fixtures
helper.cleanUp = function cleanUp(files) {
if (typeof files === 'string') files = [files];
files.forEach(function(filepath) {
filepath = path.join(helper.fixtures, filepath);
if (grunt.file.exists(filepath)) {
grunt.file.delete(filepath);
}
});
};