test: add initial tests for helper parsing functions

tests/unit/test_helper.py

@@ -0,0 +1,42 @@
+import unittest
+from unittest.mock import mock_open, patch
+from twkit import helper
+
+mocked_yaml = """
+datasets:
+  - name: 'test_dataset1'
+    description: 'My test dataset 1'
+    header: true
+    workspace: 'my_organization/my_workspace'
+    file-path: './examples/yaml/datasets/samples.csv'
+    overwrite: True
+"""
+
+mocked_file = mock_open(read_data=mocked_yaml)
+
+
+class TestYamlParserFunctions(unittest.TestCase):
+    @patch("builtins.open", mocked_file)
+    def test_parse_datasets_yaml(self):
+        result = helper.parse_all_yaml(["test_path.yaml"])
+        expected_block_output = [
+            {
+                "cmd_args": [
+                    "--header",
+                    "./examples/yaml/datasets/samples.csv",
+                    "--name",
+                    "test_dataset1",
+                    "--workspace",
+                    "my_organization/my_workspace",
+                    "--description",
+                    "My test dataset 1",
+                ],
+                "overwrite": True,
+            }
+        ]
+
+        self.assertIn("datasets", result)
+        self.assertEqual(result["datasets"], expected_block_output)
+
+
+# TODO: add more tests for other functions in helper.py