Updates hash length tests to catch async chunk loading

test/configCases/hash-length/output-filename/chunk.js

@@ -0,0 +1 @@
+module.exports = "chunk";

test/configCases/hash-length/output-filename/index.js

@@ -1,3 +1,6 @@
-it("should compile and run the test", function () {
-
+it("should compile and run the test", function (done) {
+  require(['./chunk'], function () {
+    it("should load additional chunks", function () {});
+    done();
+  });
 });

test/configCases/hash-length/output-filename/webpack.config.js

@@ -8,10 +8,12 @@ module.exports = [{
 	}
 }, {
 	output: {
-		filename: 'bundle.[chunkhash:8].js'
+		filename: 'bundle.[hash].js',
+		chunkFilename: '[id].bundle.[hash:8].js'
 	}
 }, {
 	output: {
-		filename: 'bundle.[chunkhash].js'
+		filename: 'bundle.[hash:6].js',
+		chunkFilename: '[id].bundle.[hash:8].js'
 	}
 }];