chore: run unit test in vscode

.vscode/settings.json

@@ -12,4 +12,13 @@
     ],
     "python.linting.enabled": true,
     "python.linting.flake8Enabled": true,
+    "python.testing.unittestArgs": [
+        "-v",
+        "-s",
+        "./tests",
+        "-p",
+        "test_*.py"
+    ],
+    "python.testing.pytestEnabled": false,
+    "python.testing.unittestEnabled": true,
 }
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