add pytest for getargspec

src/pymdgen/test_getargspec.py

@@ -0,0 +1,45 @@
+import inspect
+from functools import wraps
+from pymdgen import getargspec # Import your __init__.py module
+
+
+def test_getargspec_simple_function():
+    def my_function(a, b, c=10):
+        pass
+    expected_result = [
+        ['a', 'b', 'c'], 
+        None, 
+        None, 
+        [10,],
+    ]
+    assert getargspec(my_function) == expected_result
+
+def test_getargspec_args_kwargs():
+    def my_function(a, b, *args, **kwargs):
+        pass
+    expected_result = [
+        ['a', 'b', 'args', 'kwargs'], 
+        None, 
+        None, 
+        [],
+    ]
+    assert getargspec(my_function) == expected_result
+
+def test_getargspec_decorated_function():
+    def my_decorator(func):
+        @wraps(func)
+        def wrapper(*args, **kwargs):
+            return func(*args, **kwargs)
+        return wrapper
+
+    @my_decorator
+    def my_function(a, b, c=20):
+        pass
+
+    expected_result = [
+        ['a', 'b', 'c'], 
+        None, 
+        None, 
+        [20,],
+    ]
+    assert getargspec(my_function) == expected_result