add a test for flutter_sprites

packages/flutter_sprites/lib/flutter_sprites.dart

@@ -26,7 +26,7 @@ import 'package:vector_math/vector_math_64.dart';
 
 part 'src/action.dart';
 part 'src/action_spline.dart';
-part 'src/color_secuence.dart';
+part 'src/color_sequence.dart';
 part 'src/constraint.dart';
 part 'src/effect_line.dart';
 part 'src/image_map.dart';

packages/flutter_sprites/pubspec.yaml

@@ -3,7 +3,13 @@ description: A sprite toolkit built on top of Flutter
 version: 0.0.15
 author: Flutter Authors <flutter-dev@googlegroups.com>
 homepage: http://flutter.io
+
 dependencies:
   box2d: '>=0.2.0 <0.3.0'
   flutter:
     path: ../flutter
+
+dev_dependencies:
+  flutter_tools:
+    path: ../flutter_tools
+  test: any # constrained by the dependency in flutter_tools

packages/flutter_sprites/test/color_sequence_test.dart

@@ -0,0 +1,19 @@
+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+import 'dart:ui';
+
+import 'package:flutter_sprites/flutter_sprites.dart';
+import 'package:test/test.dart';
+
+void main() {
+  test("Simple test of ColorSequence", () {
+    List<Color> colors = <Color>[const Color(0xFFFFFFFF), const Color(0x000000FF)];
+    List<double> stops = <double>[0.0, 1.0];
+    ColorSequence cs = new ColorSequence(colors, stops);
+    expect(cs.colorAtPosition(0.0), equals(const Color(0xFFFFFFFF)));
+    expect(cs.colorAtPosition(0.5), equals(const Color(0x7F7F7FFF)));
+    expect(cs.colorAtPosition(1.0), equals(const Color(0x000000FF)));
+  });
+}

travis/test.sh

@@ -8,7 +8,7 @@ flutter analyze --flutter-repo --no-current-directory --no-current-package --con
 
 (cd packages/cassowary; pub run test -j1)
 (cd packages/flutter; flutter test)
-# (cd packages/flutter_sprites; ) # No tests to run.
+(cd packages/flutter_sprites; flutter test)
 (cd packages/flutter_tools; pub run test -j1)
 # (cd packages/flutter_test; ) # No tests to run.
 (cd packages/flx; pub run test -j1)