chore: import upstream snapshot with attribution

scripts/tool/templates/test_tool.py.j2

@@ -0,0 +1,28 @@
+import pytest
+import unittest
+
+from promptflow.connections import CustomConnection
+from {{ package_name }}.tools.{{ tool_name }} import {{ function_name }}
+
+
+@pytest.fixture
+def my_custom_connection() -> CustomConnection:
+    my_custom_connection = CustomConnection(
+        {
+            "api-key" : "my-api-key",
+            "api-secret" : "my-api-secret",
+            "api-url" : "my-api-url"
+        }
+    )
+    return my_custom_connection
+
+
+class TestTool:
+    def test_{{ function_name }}(self, my_custom_connection):
+        result = {{ function_name }}(my_custom_connection, input_text="Microsoft")
+        assert result == "Hello Microsoft"
+
+
+# Run the unit tests
+if __name__ == "__main__":
+    unittest.main()