improve VARIANT.__repr__

Author: junkmd

comtypes/automation.py

@@ -220,6 +220,12 @@ def __del__(self):
     def __repr__(self):
         if self.vt & VT_BYREF:
             return "VARIANT(vt=0x%x, byref(%r))" % (self.vt, self[0])
+        elif self is type(self).null:
+            return "VARIANT.null"
+        elif self is type(self).empty:
+            return "VARIANT.empty"
+        elif self is type(self).missing:
+            return "VARIANT.missing"
         return "VARIANT(vt=0x%x, %r)" % (self.vt, self.value)
 
     @classmethod

comtypes/test/test_variant.py

@@ -216,6 +216,13 @@ def test_byref(self):
         variable.value = 96
         self.assertEqual(v[0], 96)
 
+    def test_repr(self):
+        self.assertEqual(repr(VARIANT(c_int(42))), "VARIANT(vt=0x3, 42)")
+        self.assertEqual(repr(VARIANT(byref(c_int(42)))), "VARIANT(vt=0x4003, byref(42))")
+        self.assertEqual(repr(VARIANT.empty), "VARIANT.empty")
+        self.assertEqual(repr(VARIANT.null), "VARIANT.null")
+        self.assertEqual(repr(VARIANT.missing), "VARIANT.missing")
+
 
 class ArrayTest(unittest.TestCase):
     def test_double(self):