Add basic tests for lazy mode

Ref #623

Author: SpaceK33z

package.json

@@ -32,6 +32,7 @@
     "mocha": "^3.0.2",
     "pug": "^2.0.0-beta5",
     "pug-loader": "^2.3.0",
+    "should": "^11.1.0",
     "style-loader": "~0.13.0",
     "supertest": "^2.0.0",
     "url-loader": "~0.5.6",

test/Lazy.test.js

@@ -0,0 +1,22 @@
+var should = require("should");
+var helper = require("./helper");
+var config = require("./fixtures/simple-config/webpack.config");
+
+describe("Lazy", function() {
+	afterEach(helper.close);
+
+	it("without filename option it should throw an error", function() {
+		should.throws(function() {
+			helper.start(config, {
+				lazy: true
+			});
+		}, /'filename' option must be set/);
+	});
+
+	it("with filename option should not throw an error", function(done) {
+		helper.start(config, {
+			lazy: true,
+			filename: "bundle.js"
+		}, done);
+	});
+});