1 files changed, 9 insertions, 9 deletions
diff --git a/test/fixtures/stub_file_source.hpp b/test/fixtures/stub_file_source.hpp
index 7cb9c89320..344dff6073 100644
--- a/test/fixtures/stub_file_source.hpp
+++ b/test/fixtures/stub_file_source.hpp
@@ -16,25 +16,25 @@ public:
     std::unique_ptr<FileRequest> request(const Resource&, Callback) override;
 
     // You can set the response callback on a global level by assigning this callback:
-    std::function<Response (const Resource&)> response = [this] (const Resource& resource) {
+    std::function<optional<Response> (const Resource&)> response = [this] (const Resource& resource) {
         return defaultResponse(resource);
     };
 
     // Or set per-kind responses by setting these callbacks:
-    std::function<Response (const Resource&)> styleResponse;
-    std::function<Response (const Resource&)> sourceResponse;
-    std::function<Response (const Resource&)> tileResponse;
-    std::function<Response (const Resource&)> glyphsResponse;
-    std::function<Response (const Resource&)> spriteJSONResponse;
-    std::function<Response (const Resource&)> spriteImageResponse;
+    std::function<optional<Response> (const Resource&)> styleResponse;
+    std::function<optional<Response> (const Resource&)> sourceResponse;
+    std::function<optional<Response> (const Resource&)> tileResponse;
+    std::function<optional<Response> (const Resource&)> glyphsResponse;
+    std::function<optional<Response> (const Resource&)> spriteJSONResponse;
+    std::function<optional<Response> (const Resource&)> spriteImageResponse;
 
 private:
     friend class StubFileRequest;
 
     // The default behavior is to throw if no per-kind callback has been set.
-    Response defaultResponse(const Resource&);
+    optional<Response> defaultResponse(const Resource&);
 
-    std::unordered_map<FileRequest*, std::pair<Response, Callback>> pending;
+    std::unordered_map<FileRequest*, std::pair<optional<Response>, Callback>> pending;
     util::Timer timer;
 };