force resolution 1.0

.github/workflows/analyze.yaml

@@ -10,8 +10,8 @@ jobs:
     name: Flutter analyze
     strategy:
       matrix:
-        flutter: ['beta']
-    runs-on: macos-latest
+        flutter: ['stable']
+    runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2
       - uses: subosito/flutter-action@v1
@@ -22,9 +22,6 @@ jobs:
       - run: flutter pub get
         working-directory: example
       - run: flutter analyze
-      - run: flutter test test # https://github.com/flutter/flutter/issues/20907
-      - run: flutter test test
-        working-directory: example
       - run: flutter pub run tool/prepare_submit.dart
       - name: "check for uncommitted changes"
         run: |

.github/workflows/publish-on-pub.yaml

@@ -10,11 +10,12 @@ jobs:
       - uses: actions/checkout@v2
       - uses: subosito/flutter-action@v1
         with:
-          channel: 'beta'
+          channel: 'stable'
       - run: flutter pub get
       - run: flutter pub run tool/publish/comment_dependency_overrides.dart
       - run: flutter pub get
-      - run: flutter pub run tool/publish/check_version.dart ${GITHUB_REF}
+      - run: echo ::set-env name=RELEASE_VERSION::${GITHUB_REF}
+      - run: flutter pub run tool/publish/check_version.dart ${{ env.RELEASE_VERSION }}
       - name: Setup credentials
         run: |
           mkdir -p $FLUTTER_HOME/.pub-cache

.github/workflows/test.yaml

@@ -0,0 +1,17 @@
+name: Lottie Flutter
+on:
+  pull_request:
+  push:
+    branches:
+      - master
+
+jobs:
+  test:
+    name: Run all tests
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: Run tests
+        uses: docker://cirrusci/flutter:1.22.1
+        with:
+          args: sh run_tests.sh

CHANGELOG.md

@@ -1,6 +1,3 @@
-## [0.7.1]
-- Fix a crash for some lottie file with empty paths.
-
 ## [0.7.0+1]
 - Fix Flutter Web compilation error
 

CONTRIBUTING.md

@@ -0,0 +1,7 @@
+
+## Run the Golden tests
+Run and update the golden tests requires Docker installed.
+
+```shell script
+sh update_goldens.sh
+```

README.md

@@ -64,7 +64,7 @@ class MyApp extends StatefulWidget {
 }
 
 class _MyAppState extends State<MyApp> with TickerProviderStateMixin {
-  late final AnimationController _controller;
+  AnimationController _controller;
 
   @override
   void initState() {
@@ -137,7 +137,7 @@ class MyWidget extends StatefulWidget {
 }
 
 class _MyWidgetState extends State<MyWidget> {
-  late final Future<LottieComposition> _composition;
+  Future<LottieComposition> _composition;
 
   @override
   void initState() {
@@ -176,7 +176,7 @@ a specific position and size.
 class CustomDrawer extends StatelessWidget {
   final LottieComposition composition;
 
-  const CustomDrawer(this.composition, {Key? key}) : super(key: key);
+  const CustomDrawer(this.composition, {Key key}) : super(key: key);
 
   @override
   Widget build(BuildContext context) {

example/lib/examples/alert_dialog.dart

@@ -23,7 +23,7 @@ class __PageState extends State<_Page> {
   void initState() {
     super.initState();
 
-    SchedulerBinding.instance!.addPostFrameCallback((_) => _showLoader());
+    SchedulerBinding.instance.addPostFrameCallback((_) => _showLoader());
   }
 
   void _showLoader() {

example/lib/examples/animate_no_repeat.dart

@@ -6,7 +6,7 @@ void main() async {
 }
 
 class App extends StatelessWidget {
-  const App({Key? key}) : super(key: key);
+  const App({Key key}) : super(key: key);
 
   @override
   Widget build(BuildContext context) {

example/lib/examples/animation_controller.dart

@@ -9,7 +9,7 @@ class MyApp extends StatefulWidget {
 }
 
 class _MyAppState extends State<MyApp> with TickerProviderStateMixin {
-  late final AnimationController _controller;
+  AnimationController _controller;
 
   @override
   void initState() {

example/lib/examples/animation_full_control.dart

@@ -17,7 +17,7 @@ class MyApp extends StatefulWidget {
 }
 
 class _MyAppState extends State<MyApp> with TickerProviderStateMixin {
-  late final AnimationController _controller;
+  AnimationController _controller;
 
   @override
   void initState() {
@@ -97,7 +97,7 @@ class _MyAppState extends State<MyApp> with TickerProviderStateMixin {
                   min: start,
                   max: stop,
                   reverse: true,
-                  period: _controller.duration! * (stop - start),
+                  period: _controller.duration * (stop - start),
                 );
               },
             ),

example/lib/examples/custom_draw.dart

@@ -22,7 +22,7 @@ class MyWidget extends StatefulWidget {
 }
 
 class _MyWidgetState extends State<MyWidget> {
-  late final Future<LottieComposition> _composition;
+  Future<LottieComposition> _composition;
 
   @override
   void initState() {
@@ -57,7 +57,7 @@ class _MyWidgetState extends State<MyWidget> {
 class CustomDrawer extends StatelessWidget {
   final LottieComposition composition;
 
-  const CustomDrawer(this.composition, {Key? key}) : super(key: key);
+  const CustomDrawer(this.composition, {Key key}) : super(key: key);
 
   @override
   Widget build(BuildContext context) {

example/lib/examples/custom_load.dart

@@ -23,7 +23,7 @@ class MyWidget extends StatefulWidget {
 }
 
 class _MyWidgetState extends State<MyWidget> {
-  late final Future<LottieComposition> _composition;
+  Future<LottieComposition> _composition;
 
   @override
   void initState() {

example/lib/examples/dynamic_properties.dart

@@ -8,7 +8,7 @@ void main() async {
 }
 
 class App extends StatefulWidget {
-  const App({Key? key}) : super(key: key);
+  const App({Key key}) : super(key: key);
 
   @override
   _AppState createState() => _AppState();
@@ -50,7 +50,7 @@ class _AppState extends State<App> with TickerProviderStateMixin {
               value: _useDelegates,
               onChanged: (newValue) {
                 setState(() {
-                  _useDelegates = newValue!;
+                  _useDelegates = newValue;
                 });
               },
             ),

example/lib/examples/dynamic_text.dart

@@ -7,14 +7,14 @@ void main() async {
 }
 
 class App extends StatefulWidget {
-  const App({Key? key}) : super(key: key);
+  const App({Key key}) : super(key: key);
 
   @override
   _AppState createState() => _AppState();
 }
 
 class _AppState extends State<App> with TickerProviderStateMixin {
-  late final TextEditingController _textController;
+  TextEditingController _textController;
 
   @override
   void initState() {

example/lib/examples/hide_after_complete.dart

@@ -6,14 +6,14 @@ void main() async {
 }
 
 class App extends StatefulWidget {
-  const App({Key? key}) : super(key: key);
+  const App({Key key}) : super(key: key);
 
   @override
   _AppState createState() => _AppState();
 }
 
 class _AppState extends State<App> with TickerProviderStateMixin {
-  late final AnimationController _animationController;
+  AnimationController _animationController;
   bool _showAnimation = true;
 
   @override

example/lib/examples/markers.dart

@@ -9,14 +9,14 @@ void main() async {
 }
 
 class App extends StatefulWidget {
-  const App({Key? key}) : super(key: key);
+  const App({Key key}) : super(key: key);
 
   @override
   _AppState createState() => _AppState();
 }
 
 class _AppState extends State<App> with TickerProviderStateMixin {
-  late final Future<LottieComposition> _composition;
+  Future<LottieComposition> _composition;
 
   @override
   void initState() {
@@ -35,9 +35,9 @@ class _AppState extends State<App> with TickerProviderStateMixin {
         body: FutureBuilder<LottieComposition>(
           future: _composition,
           builder: (context, snapshot) {
-            if (snapshot.hasError) return ErrorWidget(snapshot.error!);
+            if (snapshot.hasError) return ErrorWidget(snapshot.error);
             if (!snapshot.hasData) return CircularProgressIndicator();
-            return _LottieDetails(snapshot.data!);
+            return _LottieDetails(snapshot.data);
           },
         ),
       ),
@@ -48,7 +48,7 @@ class _AppState extends State<App> with TickerProviderStateMixin {
 class _LottieDetails extends StatefulWidget {
   final LottieComposition composition;
 
-  const _LottieDetails(this.composition, {Key? key}) : super(key: key);
+  const _LottieDetails(this.composition, {Key key}) : super(key: key);
 
   @override
   _LottieDetailsState createState() => _LottieDetailsState();
@@ -56,7 +56,7 @@ class _LottieDetails extends StatefulWidget {
 
 class _LottieDetailsState extends State<_LottieDetails>
     with TickerProviderStateMixin {
-  late final AnimationController _controller;
+  AnimationController _controller;
 
   @override
   void initState() {
@@ -112,8 +112,8 @@ class _LottieDetailsState extends State<_LottieDetails>
   }
 
   void _playBetween(String marker1, String marker2) {
-    var start = widget.composition.getMarker(marker1)!.start;
-    var end = widget.composition.getMarker(marker2)!.start;
+    var start = widget.composition.getMarker(marker1).start;
+    var end = widget.composition.getMarker(marker2).start;
 
     _controller.value = start;
     _controller.animateTo(end,

example/lib/examples/repeat.dart

@@ -1,63 +0,0 @@
-import 'package:flutter/material.dart';
-import 'package:lottie/lottie.dart';
-
-void main() => runApp(MyApp());
-
-class MyApp extends StatefulWidget {
-  @override
-  _MyAppState createState() => _MyAppState();
-}
-
-class _MyAppState extends State<MyApp> with TickerProviderStateMixin {
-  late final AnimationController _controller;
-  int _repeatIndex = 0;
-
-  @override
-  void initState() {
-    super.initState();
-
-    _controller = AnimationController(vsync: this)
-      ..addStatusListener((status) {
-        if (status == AnimationStatus.completed) {
-          setState(() {
-            _repeatIndex++;
-          });
-          if (_repeatIndex < 5) {
-            _controller.reset();
-            _controller.forward();
-          }
-        }
-      });
-  }
-
-  @override
-  Widget build(BuildContext context) {
-    return MaterialApp(
-      home: Scaffold(
-        body: ListView(
-          children: [
-            Lottie.asset(
-              'assets/AndroidWave.json',
-              controller: _controller,
-              width: 150,
-              height: 150,
-              onLoaded: (composition) {
-                // Configure the AnimationController with the duration of the
-                // Lottie file and start the animation.
-                _controller.duration = composition.duration;
-                _controller.forward();
-              },
-            ),
-            Center(child: Text('Repeat: $_repeatIndex')),
-          ],
-        ),
-      ),
-    );
-  }
-
-  @override
-  void dispose() {
-    _controller.dispose();
-    super.dispose();
-  }
-}

example/lib/examples/run_once.dart

@@ -12,7 +12,7 @@ void main() async {
 }
 
 class App extends StatefulWidget {
-  const App({Key? key}) : super(key: key);
+  const App({Key key}) : super(key: key);
 
   @override
   _AppState createState() => _AppState();
@@ -20,7 +20,7 @@ class App extends StatefulWidget {
 
 class _AppState extends State<App> with TickerProviderStateMixin {
   int _index = 0;
-  late final AnimationController _animationController;
+  AnimationController _animationController;
 
   @override
   void initState() {

example/lib/examples/save_frames.dart

@@ -1,5 +1,3 @@
-//@dart=2.10
-
 import 'dart:io';
 import 'dart:ui';
 import 'package:flutter/material.dart';

example/lib/main_app.dart

@@ -42,10 +42,8 @@ class App extends StatelessWidget {
                 ),
               ),
               onTap: () {
-                Navigator.push(
-                    context,
-                    MaterialPageRoute<void>(
-                        builder: (context) => Detail(assetName)));
+                Navigator.of(context).push(MaterialPageRoute<void>(
+                    builder: (context) => Detail(assetName)));
               },
             );
           },
@@ -58,7 +56,7 @@ class App extends StatelessWidget {
 class _Item extends StatelessWidget {
   final Widget child;
 
-  const _Item({Key? key, required this.child}) : super(key: key);
+  const _Item({Key key, this.child}) : super(key: key);
 
   @override
   Widget build(BuildContext context) {
@@ -83,18 +81,26 @@ class _Item extends StatelessWidget {
 class Detail extends StatefulWidget {
   final String assetName;
 
-  const Detail(this.assetName, {Key? key}) : super(key: key);
+  const Detail(this.assetName, {Key key}) : super(key: key);
 
   @override
   _DetailState createState() => _DetailState();
 }
 
 class _DetailState extends State<Detail> with TickerProviderStateMixin {
-  late final _controller = AnimationController(vsync: this);
+  AnimationController _controller;
+
+  @override
+  void initState() {
+    super.initState();
+
+    _controller = AnimationController(vsync: this);
+  }
 
   @override
   void dispose() {
     _controller.dispose();
+
     super.dispose();
   }
 

example/lib/sizing_example.dart

@@ -13,7 +13,7 @@ void main() async {
 class App extends StatelessWidget {
   final LottieComposition composition;
 
-  const App({Key? key, required this.composition}) : super(key: key);
+  const App({Key key, this.composition}) : super(key: key);
 
   @override
   Widget build(BuildContext context) {
@@ -97,13 +97,13 @@ class App extends StatelessWidget {
 
 class _Lottie extends StatefulWidget {
   final LottieComposition composition;
-  final double? width;
-  final double? height;
-  final BoxFit? fit;
-  final AlignmentGeometry? alignment;
+  final double width;
+  final double height;
+  final BoxFit fit;
+  final AlignmentGeometry alignment;
 
   const _Lottie(this.composition,
-      {Key? key, this.width, this.height, this.fit, this.alignment})
+      {Key key, this.width, this.height, this.fit, this.alignment})
       : super(key: key);
 
   @override
@@ -111,7 +111,7 @@ class _Lottie extends StatefulWidget {
 }
 
 class __LottieState extends State<_Lottie> with TickerProviderStateMixin {
-  late AnimationController _controller;
+  AnimationController _controller;
 
   @override
   void initState() {

example/lib/tests/airbnb.dart

@@ -6,7 +6,7 @@ void main() async {
 }
 
 class App extends StatelessWidget {
-  const App({Key? key}) : super(key: key);
+  const App({Key key}) : super(key: key);
 
   @override
   Widget build(BuildContext context) {

example/lib/tests/we_accept.dart

@@ -6,7 +6,7 @@ void main() async {
 }
 
 class App extends StatelessWidget {
-  const App({Key? key}) : super(key: key);
+  const App({Key key}) : super(key: key);
 
   @override
   Widget build(BuildContext context) {

example/macos/Podfile.lock

@@ -24,4 +24,4 @@ SPEC CHECKSUMS:
 
 PODFILE CHECKSUM: d8ba9b3e9e93c62c74a660b46c6fcb09f03991a7
 
-COCOAPODS: 1.10.0
+COCOAPODS: 1.9.1

example/macos/Runner.xcodeproj/project.pbxproj

@@ -330,10 +330,10 @@
 			buildActionMask = 2147483647;
 			files = (
 			);
-			inputPaths = (
+			inputFileListPaths = (
 			);
 			name = "[CP] Embed Pods Frameworks";
-			outputPaths = (
+			outputFileListPaths = (
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 			shellPath = /bin/sh;

example/pubspec.lock

@@ -7,63 +7,77 @@ packages:
       name: archive
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "3.0.0-nullsafety.0"
+    version: "2.0.11"
+  args:
+    dependency: transitive
+    description:
+      name: args
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.5.2"
   async:
     dependency: transitive
     description:
       name: async
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.5.0-nullsafety.3"
+    version: "2.5.0-nullsafety.1"
   boolean_selector:
     dependency: transitive
     description:
       name: boolean_selector
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.1.0-nullsafety.3"
+    version: "2.1.0-nullsafety.1"
   characters:
     dependency: transitive
     description:
       name: characters
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.1.0-nullsafety.5"
+    version: "1.1.0-nullsafety.3"
   charcode:
     dependency: transitive
     description:
       name: charcode
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.2.0-nullsafety.3"
+    version: "1.2.0-nullsafety.1"
   clock:
     dependency: transitive
     description:
       name: clock
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.1.0-nullsafety.3"
+    version: "1.1.0-nullsafety.1"
   collection:
     dependency: transitive
     description:
       name: collection
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.15.0-nullsafety.5"
+    version: "1.15.0-nullsafety.3"
+  convert:
+    dependency: transitive
+    description:
+      name: convert
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.1.1"
   crypto:
     dependency: transitive
     description:
       name: crypto
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "3.0.0-nullsafety.0"
+    version: "2.1.3"
   fake_async:
     dependency: transitive
     description:
       name: fake_async
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.2.0-nullsafety.3"
+    version: "1.2.0-nullsafety.1"
   ffi:
     dependency: transitive
     description:
@@ -89,7 +103,7 @@ packages:
       name: flutter_colorpicker
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.4.0-nullsafety.0"
+    version: "0.3.4"
   flutter_test:
     dependency: "direct dev"
     description: flutter
@@ -101,7 +115,7 @@ packages:
       name: golden_toolkit
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.9.0-nullsafety.0"
+    version: "0.6.0"
   http:
     dependency: "direct main"
     description:
@@ -129,42 +143,42 @@ packages:
       name: logging
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.0.0-nullsafety.0"
+    version: "0.11.4"
   lottie:
     dependency: "direct main"
     description:
       path: ".."
       relative: true
     source: path
-    version: "0.8.0-nullsafety.0"
+    version: "0.7.0+1"
   matcher:
     dependency: transitive
     description:
       name: matcher
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.12.10-nullsafety.3"
+    version: "0.12.10-nullsafety.1"
   meta:
     dependency: transitive
     description:
       name: meta
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.3.0-nullsafety.6"
+    version: "1.3.0-nullsafety.3"
   path:
     dependency: transitive
     description:
       name: path
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.8.0-nullsafety.3"
+    version: "1.8.0-nullsafety.1"
   path_provider:
     dependency: "direct main"
     description:
       name: path_provider
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.6.27"
+    version: "1.6.21"
   path_provider_linux:
     dependency: transitive
     description:
@@ -178,28 +192,28 @@ packages:
       name: path_provider_macos
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.0.4+8"
+    version: "0.0.4+4"
   path_provider_platform_interface:
     dependency: transitive
     description:
       name: path_provider_platform_interface
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.0.4"
+    version: "1.0.3"
   path_provider_windows:
     dependency: transitive
     description:
       name: path_provider_windows
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.0.4+3"
+    version: "0.0.4+1"
   pedantic:
     dependency: transitive
     description:
       name: pedantic
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.9.2"
+    version: "1.8.0+1"
   platform:
     dependency: transitive
     description:
@@ -232,70 +246,70 @@ packages:
       name: source_span
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.8.0-nullsafety.4"
+    version: "1.8.0-nullsafety.2"
   stack_trace:
     dependency: transitive
     description:
       name: stack_trace
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.10.0-nullsafety.6"
+    version: "1.10.0-nullsafety.1"
   stream_channel:
     dependency: transitive
     description:
       name: stream_channel
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.1.0-nullsafety.3"
+    version: "2.1.0-nullsafety.1"
   string_scanner:
     dependency: transitive
     description:
       name: string_scanner
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.1.0-nullsafety.3"
+    version: "1.1.0-nullsafety.1"
   term_glyph:
     dependency: transitive
     description:
       name: term_glyph
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.2.0-nullsafety.3"
+    version: "1.2.0-nullsafety.1"
   test_api:
     dependency: transitive
     description:
       name: test_api
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.2.19-nullsafety.6"
+    version: "0.2.19-nullsafety.2"
   typed_data:
     dependency: transitive
     description:
       name: typed_data
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.3.0-nullsafety.5"
+    version: "1.3.0-nullsafety.3"
   vector_math:
     dependency: transitive
     description:
       name: vector_math
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.1.0-nullsafety.5"
+    version: "2.1.0-nullsafety.3"
   win32:
     dependency: transitive
     description:
       name: win32
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.7.4"
+    version: "1.7.3"
   xdg_directories:
     dependency: transitive
     description:
       name: xdg_directories
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.1.2"
+    version: "0.1.0"
 sdks:
-  dart: ">=2.12.0-29.10.beta <3.0.0"
-  flutter: ">=1.24.0-10.2.pre <2.0.0"
+  dart: ">=2.10.0-110 <2.11.0"
+  flutter: ">=1.12.13+hotfix.5 <2.0.0"

example/pubspec.yaml

@@ -1,14 +1,14 @@
 name: lottie_example
 description: A sample app for the Lottie player
-publish_to: none
+version: 0.0.1
 
 environment:
-  sdk: ">=2.12.0-0 <3.0.0"
+  sdk: ">=2.7.0 <3.0.0"
 
 dependencies:
   flutter:
     sdk: flutter
-  flutter_colorpicker: ^0.4.0-nullsafety.0
+  flutter_colorpicker:
   http:
   lottie:
     path: ../
@@ -17,7 +17,7 @@ dependencies:
 dev_dependencies:
   flutter_test:
     sdk: flutter
-  golden_toolkit: ^0.9.0-nullsafety.0
+  golden_toolkit:
 
 # For information on the generic Dart part of this file, see the
 # following page: https://dart.dev/tools/pub/pubspec
@@ -31,7 +31,6 @@ flutter:
     - assets/lottiefiles/
     - assets/Mobilo/
     - assets/Tests/
-    - assets/Tests/images/
     - assets/Logo/
     - assets/Images/
     - assets/Images/WeAccept/

example/test/dynamic_properties_test.dart

@@ -7,7 +7,7 @@ import 'package:lottie/lottie.dart';
 import 'utils.dart';
 
 void main() {
-  late LottieComposition composition;
+  LottieComposition composition;
 
   setUpAll(() async {
     composition = await LottieComposition.fromBytes(
@@ -15,13 +15,16 @@ void main() {
   });
 
   void testGolden(String description, ValueDelegate delegate,
-      {double? progress}) async {
+      {double progress}) async {
     var screenshotName = description
         .toLowerCase()
         .replaceAll(RegExp('[^a-z0-9 ]'), '')
         .replaceAll(' ', '_');
 
     testWidgets(description, (tester) async {
+      tester.binding.window.physicalSizeTestValue = Size(500, 400);
+      tester.binding.window.devicePixelRatioTestValue = 1.0;
+
       var animation =
           AnimationController(vsync: tester, duration: composition.duration);
       if (progress != null) {
@@ -288,8 +291,8 @@ void main() {
     testGolden(
         'Opacity interpolation ($progress)',
         ValueDelegate.transformOpacity(['Shape Layer 1', 'Rectangle'],
-            callback: (frameInfo) => lerpDouble(10, 100,
-                    Curves.linear.transform(frameInfo.overallProgress))!
+            callback: (frameInfo) => lerpDouble(
+                    10, 100, Curves.linear.transform(frameInfo.overallProgress))
                 .round()),
         progress: progress);
   }

example/test/dynamic_text_test.dart

@@ -6,6 +6,9 @@ import 'package:lottie/lottie.dart';
 
 void main() {
   testWidgets('Dynamic test', (tester) async {
+    tester.binding.window.physicalSizeTestValue = Size(500, 400);
+    tester.binding.window.devicePixelRatioTestValue = 1.0;
+
     var composition = await LottieComposition.fromBytes(
         File('assets/Tests/DynamicText.json').readAsBytesSync());
 

example/test/flutter_test_config.dart

@@ -1,7 +1,7 @@
 import 'dart:async';
 import 'package:golden_toolkit/golden_toolkit.dart';
 
-Future<void> testExecutable(FutureOr<void> Function() testMain) async {
+Future<void> main(FutureOr<void> Function() testMain) async {
   await loadAppFonts();
   return testMain();
 }

example/test/golden_test.dart

@@ -16,8 +16,7 @@ void main() {
       var size = Size(500, 400);
       tester.binding.window.physicalSizeTestValue = size;
       tester.binding.window.devicePixelRatioTestValue = 1.0;
-      var composition =
-          (await tester.runAsync(() => FileLottie(asset).load()))!;
+      var composition = await tester.runAsync(() => FileLottie(asset).load());
 
       await tester.pumpWidget(FilmStrip(composition, size: size));