1 files changed, 59 insertions, 0 deletions
diff --git a/test/fixtures/mock_file_source.hpp b/test/fixtures/mock_file_source.hpp
new file mode 100644
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+++ b/test/fixtures/mock_file_source.hpp
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+#ifndef TEST_RESOURCES_MOCK_FILE_SOURCE
+#define TEST_RESOURCES_MOCK_FILE_SOURCE
+
+#include <mbgl/storage/file_source.hpp>
+#include <mbgl/util/thread.hpp>
+
+#include <string>
+#include <memory>
+
+namespace mbgl {
+
+// The MockFileSource is a FileSource that can simulate different
+// types of failures and it will work completely offline.
+class MockFileSource : public FileSource {
+public:
+    // Success:
+    //     Will reply to every request correctly with valid data.
+    //
+    // SuccessWithDelay:
+    //     Will reply to every request correctly with valid data,
+    //     but the ones that contains the "match" string on the
+    //     URL will be answered after a delay. This can be useful
+    //     for testing request cancellation.
+    //
+    // RequestFail:
+    //     Will reply with an error to requests that contains
+    //     the "match" string on the URL.
+    //
+    // RequestWithCorruptedData:
+    //     Will answer every request successfully but will return
+    //     corrupt data on the requests that contains the "match"
+    //     string on the URL.
+    enum Type {
+        Success,
+        SuccessWithDelay,
+        RequestFail,
+        RequestWithCorruptedData
+    };
+
+    class Impl;
+
+    MockFileSource(Type type, const std::string& match);
+    ~MockFileSource() override = default;
+
+    // Function that gets called when a delayed resource is enqueued. The
+    // callback must be safe to call from any thread.
+    void setOnRequestDelayedCallback(std::function<void(void)> callback);
+
+    // FileSource implementation.
+    Request* request(const Resource&, uv_loop_t*, Callback) override;
+    void cancel(Request*) override;
+
+private:
+    const std::unique_ptr<util::Thread<Impl>> thread_;
+};
+
+}
+
+#endif