diff --git a/related-packages/fileformats-extras/fileformats/extras/medimage_afni/tests/test_generate_sample_data.py b/related-packages/fileformats-extras/fileformats/extras/medimage_afni/tests/test_generate_sample_data.py
new file mode 100644
index 0000000..82b81d3
--- /dev/null
+++ b/related-packages/fileformats-extras/fileformats/extras/medimage_afni/tests/test_generate_sample_data.py
@@ -0,0 +1,39 @@
+import pytest
+from fileformats.medimage_afni import (
+    OneD,
+    ThreeD,
+    R1,
+    All1,
+    Dset,
+    Head,
+)
+
+
+@pytest.xfail(reason="generate_sample_data not implemented", raises=NotImplementedError)
+def test_generate_sample_oned_data():
+    assert isinstance(OneD.sample(), OneD)
+
+
+@pytest.xfail(reason="generate_sample_data not implemented", raises=NotImplementedError)
+def test_generate_sample_threed_data():
+    assert isinstance(ThreeD.sample(), ThreeD)
+
+
+@pytest.xfail(reason="generate_sample_data not implemented", raises=NotImplementedError)
+def test_generate_sample_r1_data():
+    assert isinstance(R1.sample(), R1)
+
+
+@pytest.xfail(reason="generate_sample_data not implemented", raises=NotImplementedError)
+def test_generate_sample_all1_data():
+    assert isinstance(All1.sample(), All1)
+
+
+@pytest.xfail(reason="generate_sample_data not implemented", raises=NotImplementedError)
+def test_generate_sample_dset_data():
+    assert isinstance(Dset.sample(), Dset)
+
+
+@pytest.xfail(reason="generate_sample_data not implemented", raises=NotImplementedError)
+def test_generate_sample_head_data():
+    assert isinstance(Head.sample(), Head)