From d87f9b621bd0784809c4afdd1f5ef36ebab7a3bc Mon Sep 17 00:00:00 2001
From: Mathias Agopian <mathias@google.com>
Date: Thu, 9 May 2024 05:11:31 -0700
Subject: [PATCH] add a simple tranformmanager unit test

this was to test issue #7827
---
 filament/test/filament_test.cpp | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/filament/test/filament_test.cpp b/filament/test/filament_test.cpp
index 5f47b0abee..7bd3d3445a 100644
--- a/filament/test/filament_test.cpp
+++ b/filament/test/filament_test.cpp
@@ -179,6 +179,23 @@ TEST(FilamentTest, SkinningMath) {
     }
 }
 
+TEST(FilamentTest, TransformManagerSimple) {
+    filament::FTransformManager tcm;
+    EntityManager& em = EntityManager::get();
+    Entity root = em.create();
+    tcm.create(root);
+
+    auto ti = tcm.getInstance(root);
+
+    auto t = mat4f::translation(float3{ 1, 2, 3 });
+    auto prev = tcm.getWorldTransform(ti);
+    tcm.setTransform(ti, t);
+    auto updated = tcm.getWorldTransform(ti);
+
+    EXPECT_NE(prev, t);
+    EXPECT_EQ(updated, t);
+}
+
 TEST(FilamentTest, TransformManager) {
     filament::FTransformManager tcm;
     tcm.setAccurateTranslationsEnabled(true);