Update dict copy tests

Author: vsakkas

mypyc/test-data/run-dicts.test

@@ -92,17 +92,6 @@ assert get_content(od) == ([3, 1], [4, 2], [(3, 4), (1, 2)])
 assert get_content_set({1: 2}) == ({1}, {2}, {(1, 2)})
 assert get_content_set(od) == ({1, 3}, {2, 4}, {(1, 2), (3, 4)})
 
-from typing import Dict
-from collections import defaultdict
-d = {}
-assert d.copy() == d
-d = {'a': 1, 'b': 2}
-assert d.copy() == d
-assert d.copy() is not d
-dd: Dict[str, int] = defaultdict(int)
-dd['a'] = 1
-assert dd.copy() == dd
-assert isinstance(dd.copy(), defaultdict)
 [typing fixtures/typing-full.pyi]
 
 [case testDictIterationMethodsRun]
@@ -204,3 +193,18 @@ else:
 2
 4
 2
+
+[case testDictMethods]
+from collections import defaultdict
+from typing import Dict
+
+def test_dict_copy() -> None:
+    d: Dict[str, int] = {}
+    assert d.copy() == d # type: ignore
+    d = {'a': 1, 'b': 2}
+    assert d.copy() == d # type: ignore
+    assert d.copy() is not d # type: ignore
+    dd: Dict[str, int] = defaultdict(int)
+    dd['a'] = 1
+    assert dd.copy() == dd # type: ignore
+    assert isinstance(dd.copy(), defaultdict) # type: ignore