[tests] Do not re-trigger answered requests

This happens on real file sources when tiles expire or in case
of error. Here we only retry on error.

1 files changed, 1 insertions, 2 deletions

diff --git a/test/src/mbgl/test/stub_file_source.hpp b/test/src/mbgl/test/stub_file_source.hpp
index b88fb59907..ee4175cc3f 100644
--- a/test/src/mbgl/test/stub_file_source.hpp
+++ b/test/src/mbgl/test/stub_file_source.hpp
@@ -13,6 +13,7 @@ public:
     ~StubFileSource() override;
 
     std::unique_ptr<AsyncRequest> request(const Resource&, Callback) override;
+    void remove(AsyncRequest*);
 
     using ResponseFunction = std::function<optional<Response> (const Resource&)>;
 
@@ -30,8 +31,6 @@ public:
     ResponseFunction spriteImageResponse;
 
 private:
-    friend class StubFileRequest;
-
     // The default behavior is to throw if no per-kind callback has been set.
     optional<Response> defaultResponse(const Resource&);