test.js

'use strict';
var fs = require('fs');
var assert = require('assert');
var gutil = require('gulp-util');
var imagemin = require('./index');

it('should minify images', function (cb) {
	var stream = imagemin();

	stream.on('data', function (file) {
		assert(file.contents.length < fs.statSync('fixture.png').size);
		cb();
	});

	stream.write(new gutil.File({
		path: __dirname + '/fixture.png',
		contents: fs.readFileSync('fixture.png')
	}));
});

it('should skip unsupported images', function (cb) {
	var stream = imagemin();

	stream.on('data', function (file) {
		assert.strictEqual(file.contents, null);
		cb();
	});

	stream.write(new gutil.File({
		path: __dirname + '/fixture.bmp'
	}));
});