Add tests

tests/unit/services/test_tool_service.py

@@ -0,0 +1,76 @@
+from unittest.mock import MagicMock, patch
+
+import pytest
+
+from nalgonda.services.tool_service import ToolService, generate_tool_description
+
+
+def test_generate_tool_description():
+    with patch(
+        "nalgonda.services.tool_service.get_chat_completion", return_value="Summary of the tool"
+    ) as mock_get_chat:
+        code = "def example(): pass"
+        result = generate_tool_description(code)
+        mock_get_chat.assert_called_once_with(
+            system_message="""\
+As a supportive assistant, ensure your responses are concise,
+confined to a single sentence, and rigorously comply with the specified instructions.\
+""",
+            user_prompt="In one succinct sentence, describe the functionality of the tool provided below:\n```\n"
+            + code
+            + "\n```",
+            temperature=0.0,
+            model="gpt-3.5-turbo-1106",
+        )
+        assert result == "Summary of the tool", "The function did not return the expected summary"
+
+
+def test_get_tool_class_found():
+    tool_name = "SummarizeCode"
+    with patch("nalgonda.services.tool_service.custom_tools.SummarizeCode", new_callable=MagicMock) as mock_tool:
+        service = ToolService()
+        result = service._get_tool_class(tool_name)
+        assert result == mock_tool, "The function did not return the correct tool class"
+
+
+def test_get_tool_class_not_found():
+    tool_name = "NonExistingTool"
+    service = ToolService()
+    with pytest.raises(Exception) as exc_info:
+        service._get_tool_class(tool_name)
+    assert "Tool NonExistingTool not found" in str(exc_info.value), "The function did not raise the expected exception"
+
+
+def test_get_tool_arguments():
+    with patch("nalgonda.services.tool_service.get_chat_completion", return_value='{"arg": "value"}') as mock_get_chat:
+        service = ToolService()
+        result = service._get_tool_arguments("function_spec", "user_prompt")
+        expected_args_str = '{"arg": "value"}'
+        assert result == expected_args_str, "The function did not return the expected argument string"
+        mock_get_chat.assert_called_once()
+
+
+def test_execute_tool_success():
+    tool_class_mock = MagicMock()
+    tool_instance_mock = tool_class_mock.return_value
+    tool_instance_mock.run.return_value = "Tool output"
+    args = '{"arg":"value"}'
+
+    with patch("nalgonda.services.tool_service.ToolService._get_tool_class", return_value=tool_class_mock):
+        service = ToolService()
+        result = service._execute_tool(tool_class_mock, args)
+        assert result == "Tool output", "The function did not execute the tool correctly or failed to return its output"
+
+
+def test_execute_tool_failure():
+    tool_class_mock = MagicMock()
+    tool_instance_mock = tool_class_mock.return_value
+    tool_instance_mock.run.side_effect = Exception("Error running tool")
+    args = '{"arg":"value"}'
+
+    with patch("nalgonda.services.tool_service.ToolService._get_tool_class", return_value=tool_class_mock):
+        service = ToolService()
+        result = service._execute_tool(tool_class_mock, args)
+        assert (
+            "Error: Error running tool" in result
+        ), "The function did not handle exceptions from tool execution properly"