import os
import sys
import tempfile
from pathlib import Path
from unittest.mock import patch
from devserver_mcp.utils import get_tool_emoji, log_error_to_file
def test_get_tool_emoji():
assert get_tool_emoji() == "🔧"
def test_log_error_to_file():
with tempfile.TemporaryDirectory() as temp_dir:
original_cwd = Path.cwd()
try:
os.chdir(temp_dir)
error = ValueError("Test error message")
context = "test_context"
log_error_to_file(error, context)
log_file = Path(temp_dir) / "mcp-errors.log"
assert log_file.exists()
content = log_file.read_text(encoding="utf-8")
assert "ERROR in context: test_context" in content
assert "Error Type: ValueError" in content
assert "Error Message: Test error message" in content
assert f"python_version: {sys.version}" in content
assert f"platform: {sys.platform}" in content
assert "Full Traceback:" in content
finally:
os.chdir(original_cwd)
def test_log_error_to_file_no_context():
with tempfile.TemporaryDirectory() as temp_dir:
original_cwd = Path.cwd()
try:
os.chdir(temp_dir)
error = RuntimeError("Another test error")
log_error_to_file(error)
log_file = Path(temp_dir) / "mcp-errors.log"
assert log_file.exists()
content = log_file.read_text(encoding="utf-8")
assert "ERROR in context: " in content
assert "Error Type: RuntimeError" in content
assert "Error Message: Another test error" in content
finally:
os.chdir(original_cwd)
def test_log_error_to_file_handles_write_failure():
with patch("devserver_mcp.utils.Path.cwd") as mock_cwd:
mock_cwd.return_value = Path("/nonexistent/impossible/path")
error = Exception("Test error")
log_error_to_file(error, "test")
def test_log_error_to_file_appends_to_existing_file():
with tempfile.TemporaryDirectory() as temp_dir:
original_cwd = Path.cwd()
try:
os.chdir(temp_dir)
log_file = Path(temp_dir) / "mcp-errors.log"
log_file.write_text("Existing content\n", encoding="utf-8")
error = ValueError("Test error")
log_error_to_file(error, "test")
content = log_file.read_text(encoding="utf-8")
assert "Existing content" in content
assert "Error Type: ValueError" in content
finally:
os.chdir(original_cwd)
