diff --git a/tests/test_function/test_search.py b/tests/test_function/test_search.py
index c006b0d..995e3bc 100644
--- a/tests/test_function/test_search.py
+++ b/tests/test_function/test_search.py
@@ -4,13 +4,11 @@ import tempfile
 import logging
 
 import learnware
-
-learnware.init(logging_level=logging.WARNING)
-
 from learnware.learnware import Learnware
 from learnware.client import LearnwareClient
-from learnware.market import instantiate_learnware_market, BaseUserInfo, EasySemanticChecker
-from learnware.config import C
+from learnware.market import instantiate_learnware_market, BaseUserInfo
+
+learnware.init(logging_level=logging.WARNING)
 
 
 class TestSearch(unittest.TestCase):
diff --git a/tests/test_workflow/test_hetero_workflow.py b/tests/test_workflow/test_hetero_workflow.py
index efcc14c..117233f 100644
--- a/tests/test_workflow/test_hetero_workflow.py
+++ b/tests/test_workflow/test_hetero_workflow.py
@@ -11,9 +11,6 @@ from shutil import copyfile, rmtree
 from sklearn.metrics import mean_squared_error
 
 import learnware
-
-learnware.init(logging_level=logging.WARNING)
-
 from learnware.market import instantiate_learnware_market, BaseUserInfo
 from learnware.specification import RKMETableSpecification, generate_rkme_table_spec, generate_semantic_spec
 from learnware.reuse import HeteroMapAlignLearnware, AveragingReuser, EnsemblePruningReuser
@@ -21,7 +18,7 @@ from learnware.tests.templates import LearnwareTemplate, PickleModelTemplate, St
 
 from hetero_config import input_shape_list, input_description_list, output_description_list, user_description_list
 
-
+learnware.init(logging_level=logging.WARNING)
 curr_root = os.path.dirname(os.path.abspath(__file__))
 
 
diff --git a/tests/test_workflow/test_workflow.py b/tests/test_workflow/test_workflow.py
index 0139b16..31656fe 100644
--- a/tests/test_workflow/test_workflow.py
+++ b/tests/test_workflow/test_workflow.py
@@ -10,14 +10,12 @@ from sklearn.datasets import load_digits
 from sklearn.model_selection import train_test_split
 
 import learnware
-
-learnware.init(logging_level=logging.WARNING)
-
 from learnware.market import instantiate_learnware_market, BaseUserInfo
 from learnware.specification import RKMETableSpecification, generate_rkme_table_spec, generate_semantic_spec
 from learnware.reuse import JobSelectorReuser, AveragingReuser, EnsemblePruningReuser, FeatureAugmentReuser
 from learnware.tests.templates import LearnwareTemplate, PickleModelTemplate, StatSpecTemplate
 
+learnware.init(logging_level=logging.WARNING)
 curr_root = os.path.dirname(os.path.abspath(__file__))