rename & test

tests/finco/test_utils.py

@@ -0,0 +1,23 @@
+import unittest
+from qlib.finco.utils import SingletonBaseClass
+
+
+class TimeUtils(unittest.TestCase):
+
+    def test_singleton(self):
+        # self.assertEqual(self.to_str(data.tail()), self.to_str(res))
+        closure_checker = []
+
+        class A(SingletonBaseClass):
+
+            def __init__(self) -> None:
+                closure_checker.append(0)
+
+        A()
+        self.assertEqual(len(closure_checker), 1)
+        A()
+        self.assertEqual(len(closure_checker), 1)
+
+
+if __name__ == "__main__":
+    unittest.main()