add class decorator test

Author: dmamelin

tests/test_unit_eval.py

@@ -206,6 +206,22 @@ class Foo(metaclass=Meta, flag=True):
 """,
         [True, True],
     ],
+    [
+        """
+def deco(label):
+    def wrap(cls):
+        cls.labels.append(label)
+        return cls
+    return wrap
+
+@deco("first")
+@deco("second")
+class Decorated:
+    labels = []
+Decorated.labels
+""",
+        ["second", "first"],
+    ],
     ["Foo = [type('Foo', (), {'x': 100})]; Foo[0].x = 10; Foo[0].x", 10],
     ["Foo = [type('Foo', (), {'x': [100, 101]})]; Foo[0].x[1] = 10; Foo[0].x", [100, 10]],
     ["Foo = [type('Foo', (), {'x': [0, [[100, 101]]]})]; Foo[0].x[1][0][1] = 10; Foo[0].x[1]", [[100, 10]]],