Fix newly enforced lint (#161)

diff --git a/test/dom_test.dart b/test/dom_test.dart
index 82db4f4..df6eb02 100644
--- a/test/dom_test.dart
+++ b/test/dom_test.dart
@@ -1,9 +1,9 @@
 /// Additional feature tests that aren't based on test data.
 library dom_test;
 
-import 'package:test/test.dart';
 import 'package:html/dom.dart';
 import 'package:html/parser.dart';
+import 'package:test/test.dart';
 
 void main() {
   group('Element', () {
diff --git a/test/support.dart b/test/support.dart
index 83894af..f4f48f8 100644
--- a/test/support.dart
+++ b/test/support.dart
@@ -5,10 +5,10 @@
 import 'dart:io';
 import 'dart:isolate';
 
-import 'package:path/path.dart' as p;
-import 'package:html/src/treebuilder.dart';
 import 'package:html/dom.dart';
 import 'package:html/dom_parsing.dart';
+import 'package:html/src/treebuilder.dart';
+import 'package:path/path.dart' as p;
 
 typedef TreeBuilderFactory = TreeBuilder Function(bool namespaceHTMLElements);