[bug fix] test bug fix

test/core/test_callbacks.py

@@ -134,7 +134,7 @@ class TestCallback(unittest.TestCase):
     
     def test_fitlog_callback(self):
         import fitlog
-        fitlog.set_log_dir(self.tempdir)
+        fitlog.set_log_dir(self.tempdir, new_log=True)
         data_set, model = prepare_env()
         from fastNLP import Tester
         tester = Tester(data=data_set, model=model, metrics=AccuracyMetric(pred="predict", target="y"))
@@ -164,7 +164,7 @@ class TestCallback(unittest.TestCase):
         tester = Tester(data=data_set, model=model, metrics=AccuracyMetric(pred="predict", target="y"))
         import fitlog
 
-        fitlog.set_log_dir(self.tempdir)
+        fitlog.set_log_dir(self.tempdir, new_log=True)
         tempfile_path = os.path.join(self.tempdir, 'chkt.pt')
         callbacks = [CheckPointCallback(tempfile_path)]