diff --git a/tests/test_import.py b/tests/test_import.py
new file mode 100644
index 0000000..0a527ed
--- /dev/null
+++ b/tests/test_import.py
@@ -0,0 +1,43 @@
+from nro45data import psw
+
+def test_psw():
+    assert psw is not None
+    assert psw.nqm2fits is not None
+    assert psw.nqm2ms2 is not None
+    assert psw.nqm2ms4 is not None
+
+
+def test_nqm2fits():
+    assert psw.nqm2fits.__name__ == 'nqm2fits'
+    assert psw.nqm2fits.__module__ == 'nro45data.psw'
+    assert psw.nqm2fits.__doc__ is not None
+    assert psw.nqm2fits.__annotations__ == {'nqmfile': str, 'fitsfile': str, 'overwrite': bool, 'return': bool}
+    assert psw.nqm2fits.__module__ == 'nro45data.psw'
+    assert psw.nqm2fits.__module__ == 'nro45data.psw'
+    assert psw.nqm2fits.__module__ == 'nro45data.psw'
+    assert psw.nqm2fits.__module__ == 'nro45data.psw'
+    assert psw.nqm2fits.__module__ == 'nro45data.psw'
+
+
+def test_nqm2ms2():
+    assert psw.nqm2ms2.__name__ == 'nqm2ms2'
+    assert psw.nqm2ms2.__module__ == 'nro45data.psw'
+    assert psw.nqm2ms2.__doc__ is not None
+    assert psw.nqm2ms2.__annotations__ == {'nqmfile': str, 'msfile': str, 'overwrite': bool, 'return': bool}
+    assert psw.nqm2ms2.__module__ == 'nro45data.psw'
+    assert psw.nqm2ms2.__module__ == 'nro45data.psw'
+    assert psw.nqm2ms2.__module__ == 'nro45data.psw'
+    assert psw.nqm2ms2.__module__ == 'nro45data.psw'
+    assert psw.nqm2ms2.__module__ == 'nro45data.psw'
+
+
+def test_nqm2ms4():
+    assert psw.nqm2ms4.__name__ == 'nqm2ms4'
+    assert psw.nqm2ms4.__module__ == 'nro45data.psw'
+    assert psw.nqm2ms4.__doc__ is not None
+    assert psw.nqm2ms4.__annotations__ == {'nqmfile': str, 'psfile': str, 'overwrite': bool, 'return': bool}
+    assert psw.nqm2ms4.__module__ == 'nro45data.psw'
+    assert psw.nqm2ms4.__module__ == 'nro45data.psw'
+    assert psw.nqm2ms4.__module__ == 'nro45data.psw'
+    assert psw.nqm2ms4.__module__ == 'nro45data.psw'
+    assert psw.nqm2ms4.__module__ == 'nro45data.psw'