[core] Check if frameZoom is NaN in Transform::flyTo callback

1 files changed, 5 insertions, 0 deletions

diff --git a/test/map/transform.test.cpp b/test/map/transform.test.cpp
index 6d41a868dc..11c2c1cc6b 100644
--- a/test/map/transform.test.cpp
+++ b/test/map/transform.test.cpp
@@ -36,6 +36,11 @@ TEST(Transform, InvalidZoom) {
     cameraOptions.center = LatLng { util::LATITUDE_MAX, util::LONGITUDE_MAX };
     cameraOptions.zoom = transform.getState().getMaxZoom();
 
+    // Executing flyTo with an empty size causes frameZoom to be NaN.
+    transform.flyTo(cameraOptions);
+    transform.updateTransitions(transform.getTransitionStart() + transform.getTransitionDuration());
+    ASSERT_DOUBLE_EQ(transform.getZoom(), transform.getState().getMaxZoom());
+
     // Executing flyTo with maximum zoom level to the same zoom level causes
     // frameZoom to be bigger than maximum zoom.
     transform.resize(Size { 100, 100 });