Cleanup entities component lists on destruction

Change-Id: I1e5f006b612a69e6b5cc98aecb6c8fdc3d6281b0
Reviewed-by: Sean Harmer <sean.harmer@kdab.com>

1 files changed, 23 insertions, 0 deletions

diff --git a/tests/auto/core/qaspectengine/tst_qaspectengine.cpp b/tests/auto/core/qaspectengine/tst_qaspectengine.cpp
index 8a6adc8b2..729df74b2 100644
--- a/tests/auto/core/qaspectengine/tst_qaspectengine.cpp
+++ b/tests/auto/core/qaspectengine/tst_qaspectengine.cpp
@@ -42,6 +42,7 @@
 #include <QtTest/QtTest>
 #include <Qt3DCore/qaspectengine.h>
 #include <Qt3DCore/qentity.h>
+#include <Qt3DCore/qtransform.h>
 
 using namespace Qt3D;
 
@@ -55,6 +56,7 @@ public:
 private slots:
     void constructionDestruction();
     void setRootEntity();
+    void shouldNotCrashOnShutdownWhenComponentIsCreatedWithParentBeforeItsEntity();
 
     // TODO: Add more QAspectEngine tests
 };
@@ -83,6 +85,27 @@ void tst_QAspectEngine::setRootEntity()
     delete engine;
 }
 
+void tst_QAspectEngine::shouldNotCrashOnShutdownWhenComponentIsCreatedWithParentBeforeItsEntity()
+{
+    // GIVEN
+    QEntity *root = new QEntity;
+    // A component parented to an entity...
+    QComponent *component = new Qt3D::QTransform(root);
+    // ... created *before* the entity it will be added to.
+    QEntity *entity = new QEntity(root);
+    entity->addComponent(component);
+
+    // An initialized engine (so that the arbiter has been fed)
+    QAspectEngine engine;
+    engine.initialize();
+
+    // WHEN
+    engine.setRootEntity(root);
+
+    // THEN
+    // Nothing particular happen on exit, especially no crash
+}
+
 QTEST_MAIN(tst_QAspectEngine)
 
 #include "tst_qaspectengine.moc"