diff --git a/.github/workflows/py_test.yml b/.github/workflows/py_test.yml
index 86f894a..fee1298 100644
--- a/.github/workflows/py_test.yml
+++ b/.github/workflows/py_test.yml
@@ -75,7 +75,7 @@ jobs:
            pytest $TEST_FILES
 
       - name: Show coverage
-        run: coverage report -m --omit=".*.ipynb"
+        run: coverage report -m --omit=[".*.ipynb", "similarityRunner/UI", "similarityRunner/models", "similarityRunner/runner.py"]
 
       - name: Create coverage file
         if: github.event_name == 'pull_request'
diff --git a/test/test_runner_connectors.py b/test/test_runner_connectors.py
index 030f03d..5126791 100644
--- a/test/test_runner_connectors.py
+++ b/test/test_runner_connectors.py
@@ -12,6 +12,7 @@ def test_get_data_files(self):
                                        directory_paths=[],
                                      file_type=("csv",))
         data, names = connector.get_data(settings)
+        connector.close()
         self.assertEqual(len(data), 2)
         self.assertEqual(names[0], "./data/netflix_titles")
         self.assertEqual(names[1], "./data/disney_movies")
@@ -22,4 +23,5 @@ def test_get_data_folder(self):
                                        directory_paths=["./data"],
                                        file_type=("csv",))
         data, _ = connector.get_data(settings)
+        connector.close()
         self.assertEqual(len(data), 11)
diff --git a/test/test_runner_formators.py b/test/test_runner_formators.py
new file mode 100644
index 0000000..fc16e10
--- /dev/null
+++ b/test/test_runner_formators.py
@@ -0,0 +1,28 @@
+import unittest
+
+from formators.jason_formater import JsonFormater
+
+
+class TestJsonFormater(unittest.TestCase):
+    def test_format_data(self):
+        data = {"a": {"b": 0.5, "c": 0.3},
+                "b": {"a": 0.5, "c": 0.8},
+                "c": {"a": 0.3, "b": 0.8}}
+        formater = JsonFormater()
+        jsondata = formater.format(data)
+        self.assertEqual(jsondata, '''{
+    "a": {
+        "b": 0.5,
+        "c": 0.3
+    },
+    "b": {
+        "a": 0.5,
+        "c": 0.8
+    },
+    "c": {
+        "a": 0.3,
+        "b": 0.8
+    }
+}''')
+
+