update tests

thermion_dart/test/transform_tests.dart

@@ -0,0 +1,45 @@
+// ignore_for_file: unused_local_variable
+
+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("transforms");
+  group("transforms", () {
+    test('set/unset parent geometry', () async {
+      await testHelper.withViewer((viewer) async {
+        var blueMaterialInstance = await viewer.createUnlitMaterialInstance();
+        final blueCube = await viewer.createGeometry(GeometryHelper.cube(normals: false, uvs: false),
+            materialInstances: [blueMaterialInstance]);
+        await blueMaterialInstance.setParameterFloat4(
+            "baseColorFactor", 0.0, 0.0, 1.0, 1.0);
+
+        // Position blue cube slightly behind and to the right
+        await viewer.setTransform(
+            blueCube.entity, Matrix4.translation(Vector3(1.0, 0.0, -1.0)));
+
+        var greenMaterialInstance = await viewer.createUnlitMaterialInstance();
+        final greenCube = await viewer.createGeometry(GeometryHelper.cube(normals: false, uvs: false),
+            materialInstances: [greenMaterialInstance]);
+        await greenMaterialInstance.setParameterFloat4(
+            "baseColorFactor", 0.0, 1.0, 0.0, 1.0);
+
+        await testHelper.capture(viewer, "before_parent");
+        await viewer.setParent(blueCube.entity, greenCube.entity);
+
+        await viewer.setTransform(
+            greenCube.entity, Matrix4.translation(Vector3.all(-1)));
+
+        await testHelper.capture(viewer, "after_parent");
+
+        await viewer.setParent(blueCube.entity, null);
+
+        await testHelper.capture(viewer, "unparent");
+      });
+    });
+  });
+}