diff --git a/test.py b/test.py
index 1522b28b..4796ee4a 100644
--- a/test.py
+++ b/test.py
@@ -1,4 +1,4 @@
 import os
 
-os.system("nosetests --with-coverage --cover-package pyecharts --cover-package")
+os.system("nosetests --with-coverage --cover-package pyecharts --cover-package .")
 os.system("flake8 --exclude build --max-line-length 89 --ignore=F401")
diff --git a/test/test_base.py b/test/test_base.py
index dcb5f377..b1c204ca 100644
--- a/test/test_base.py
+++ b/test/test_base.py
@@ -35,7 +35,5 @@ def test_render(fake_writer):
 
 def test_base_iso_format():
     mock_time_str = "2022-04-14 14:42:00"
-    assert (
-        default(datetime.strptime(mock_time_str, "%Y-%m-%d %H:%M:%S"))
-        == "2022-04-14T14:42:00"
-    )
+    mock_time = datetime.strptime(mock_time_str, "%Y-%m-%d %H:%M:%S")
+    assert (default(mock_time) == "2022-04-14T14:42:00")
diff --git a/test/test_chart_options.py b/test/test_chart_options.py
index 17e64bbb..902fb83c 100644
--- a/test/test_chart_options.py
+++ b/test/test_chart_options.py
@@ -98,4 +98,3 @@ def test_tree_map_item_style_options_remove_none():
         "borderWidth": 0,
     }
     assert_equal(expected, remove_key_with_none_value(option.opts))
-
diff --git a/test/test_custom.py b/test/test_custom.py
index 362fc23e..fd8fb8c2 100644
--- a/test/test_custom.py
+++ b/test/test_custom.py
@@ -19,7 +19,6 @@ def test_custom_base(fake_writer):
                 var start = api.coord([api.value(1), categoryIndex]);
                 var end = api.coord([api.value(2), categoryIndex]);
                 var height = api.size([0, 1])[1] * 0.6;
-    
                 var rectShape = echarts.graphic.clipRectByRect({
                     x: start[0],
                     y: start[1] - height / 2,
@@ -31,7 +30,6 @@ def test_custom_base(fake_writer):
                     width: params.coordSys.width,
                     height: params.coordSys.height
                 });
-    
                 return rectShape && {
                     type: 'rect',
                     shape: rectShape,
diff --git a/test/test_lines3d.py b/test/test_lines3d.py
index 39bff29c..93dfd9b2 100644
--- a/test/test_lines3d.py
+++ b/test/test_lines3d.py
@@ -9,7 +9,8 @@ from pyecharts.charts import Lines3D
 
 @patch("pyecharts.render.engine.write_utf8_html_file")
 def test_lines3d_base(fake_writer):
-    test_main_url: str = "https://cdn.jsdelivr.net/gh/apache/echarts-website@asf-site/examples"
+    test_main_url: str = \
+        "https://cdn.jsdelivr.net/gh/apache/echarts-website@asf-site/examples"
     data_json_url = test_main_url + "/data-gl/asset/data/flights.json"
     base_texture = test_main_url + "/data-gl/asset/world.topo.bathy.200401.jpg"
     height_texture = test_main_url + "/data-gl/asset/bathymetry_bw_composite_4k.jpg"
diff --git a/test/test_mixins.py b/test/test_mixins.py
index bc5dd228..94096f5d 100644
--- a/test/test_mixins.py
+++ b/test/test_mixins.py
@@ -24,4 +24,3 @@ def test_composite_mixin_len():
     c.add(b_1, "bar")
     c.add(b_2, "line")
     assert len(c) == 2
-
diff --git a/test/test_utils.py b/test/test_utils.py
index 7245deac..9409afee 100644
--- a/test/test_utils.py
+++ b/test/test_utils.py
@@ -8,8 +8,12 @@ def test_utils_produce_require_dict():
     assert_equal(cfg["config_items"], ["'echarts':'https://example.comecharts.min'"])
     assert_equal(cfg["libraries"], ["'echarts'"])
 
-    cfg_1 = utils.produce_require_dict(utils.OrderedSet("https://api.map.baidu.com"), "https://example.com")
-    assert_equal(cfg_1["config_items"], ["'baidu_map_api25':'https://api.map.baidu.com'"])
+    cfg_1 = utils.produce_require_dict(
+        utils.OrderedSet("https://api.map.baidu.com"), "https://example.com",
+    )
+    assert_equal(
+        cfg_1["config_items"], ["'baidu_map_api25':'https://api.map.baidu.com'"],
+    )
     assert_equal(cfg_1["libraries"], ["'baidu_map_api25'"])