add animation tests

thermion_dart/test/animation_tests.dart

@@ -0,0 +1,36 @@
+import 'dart:async';
+import 'dart:io';
+import 'dart:math';
+import 'dart:typed_data';
+import 'package:animation_tools_dart/animation_tools_dart.dart';
+import 'package:thermion_dart/src/viewer/src/events.dart';
+import 'package:thermion_dart/thermion_dart.dart';
+import 'package:test/test.dart';
+import 'package:vector_math/vector_math_64.dart';
+import 'helpers.dart';
+
+void main() async {
+  final testHelper = TestHelper("animation");
+
+  group('morph animation tests', () {
+    test('set morph animation', () async {
+      var viewer = await testHelper.createViewer(
+          bg: kRed, cameraPosition: Vector3(0, 0, 5));
+
+      final cube = await viewer
+          .loadGlb("${testHelper.testDir}/assets/cube_with_morph_targets.glb");
+      var morphData = MorphAnimationData(
+          Float32List.fromList(List<double>.generate(60, (i) => i / 60)),
+          ["Key 1"]);
+      
+        await viewer.setMorphAnimationData(cube, morphData);
+      for (int i = 0; i < 60; i++) {
+        await viewer.requestFrame();
+        await Future.delayed(Duration(milliseconds: 17));  
+      }
+    
+      await testHelper.capture(viewer, "morph_animation");
+      await viewer.dispose();
+    });
+  });
+}