diff --git a/lib/test/test_H5Writer.cpp b/lib/test/test_H5Writer.cpp
index c2f187c..aded61f 100644
--- a/lib/test/test_H5Writer.cpp
+++ b/lib/test/test_H5Writer.cpp
@@ -9,4 +9,20 @@ TEST(H5Writer, get_h5_writer)
 
     auto real_writer = get_h5_writer("real_file.h5");
     EXPECT_FALSE(dynamic_cast<DummyH5Writer*>(real_writer.get()));
+}
+
+TEST(H5Writer, DummyH5Writer)
+{
+    DummyH5Writer dummy_writer;
+
+    EXPECT_FALSE(dummy_writer.is_file_open());
+
+    EXPECT_NO_THROW(dummy_writer.close_file());
+
+    EXPECT_THROW(dummy_writer.get_h5_file(), runtime_error);
+
+    unique_ptr<char> buffer(new char[1]);
+    vector<size_t> shape = {1};
+
+    EXPECT_NO_THROW(dummy_writer.write_data("does not matter", 0, buffer.get(), shape, 0, "nop", "nop"));
 }
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