var fs = require('fs'); var path = require('path'); var should = require('should'); should.Assertion.add('file', function(file, description) { this.params = { operator: 'have file ' + file, message: description }; this.obj.should.have.property('options').which.is.an.Object; this.obj.options.should.have.property('output').which.is.a.String; this.assert(fs.existsSync(path.resolve(this.obj.options.output, file))); });