[tests] Add unit test for style loading failures

1 files changed, 4 insertions, 0 deletions

diff --git a/include/mbgl/platform/default/headless_view.hpp b/include/mbgl/platform/default/headless_view.hpp
index 989c226694..89716643d4 100644
--- a/include/mbgl/platform/default/headless_view.hpp
+++ b/include/mbgl/platform/default/headless_view.hpp
@@ -43,10 +43,12 @@ public:
     void invalidate() override;
     void activate() override;
     void deactivate() override;
+    void notifyMapChange(MapChange) override;
 
     PremultipliedImage readStillImage() override;
 
     void resize(uint16_t width, uint16_t height);
+    void setMapChangeCallback(std::function<void(MapChange)>&& cb) { mapChangeCallback = std::move(cb); }
 
 private:
     // Implementation specific functions
@@ -85,6 +87,8 @@ private:
     GLXPbuffer glxPbuffer = 0;
 #endif
 
+    std::function<void(MapChange)> mapChangeCallback;
+
     GLuint fbo = 0;
     GLuint fboDepthStencil = 0;
     GLuint fboColor = 0;