diff --git a/tests/PSFInterpTest/readme b/tests/PSFInterpTest/readme
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+unittest of PSF module:
+  --test_loadPSFSet.py
+    --testdata: S30x30_psfCube_1.h5 config_test.yaml
+  --test_PSFInterpModule_coverage.py
+    --testdata: S30x30_psfCube_1.h5 S20x20_psfCube_1.h5 config_test.yaml
+  --test_Convolve.py
+    --testdata: ccd1-w1