diff --git a/core-buffer/test/test_SFWriter.cpp b/core-buffer/test/test_SFWriter.cpp
index 296dcf2..7c10d44 100644
--- a/core-buffer/test/test_SFWriter.cpp
+++ b/core-buffer/test/test_SFWriter.cpp
@@ -8,12 +8,12 @@ TEST(SFWriter, basic_interaction)
     size_t n_modules = 2;
     size_t n_frames = 5;
 
-    auto data = make_unique<uint16_t>(n_modules*MODULE_N_PIXELS);
+    auto data = make_unique<char[]>(n_modules*MODULE_N_BYTES);
+    auto metadata = make_shared<DetectorFrame>();
 
-
-    SFWriter writer("ignore.h5", 10, n_modules);
-    writer.write(data, metadata);
+    SFWriter writer("ignore.h5", n_frames, n_modules);
+    writer.write(data.get(), metadata);
     writer.close_file();
 
-
+    // TODO: Write some test.
 }
\ No newline at end of file