drawio-mcp-server/build/mcp_console_logger.test.js

Provides Draw.io services to MCP Clients

import { jest } from "@jest/globals";
import { create_logger } from "./mcp_console_logger.js";
describe("create_logger", () => {
    let originalConsoleError;
    let mockConsoleError;
    beforeEach(() => {
        // Save original console.error
        originalConsoleError = console.error;
        // Create mock for console.error
        mockConsoleError = jest.fn();
        console.error = mockConsoleError;
    });
    afterEach(() => {
        // Restore original console.error
        console.error = originalConsoleError;
        // Clear all mocks
        jest.clearAllMocks();
    });
    it("should return a Logger object with log and debug methods", () => {
        const logger = create_logger();
        expect(logger).toBeDefined();
        expect(typeof logger.log).toBe("function");
        expect(typeof logger.debug).toBe("function");
    });
    it("log method should call console.error with message and data", () => {
        const logger = create_logger();
        const testMessage = "test message";
        const testData = { key: "value" };
        const testLevel = "info";
        logger.log(testLevel, testMessage, testData);
        expect(mockConsoleError).toHaveBeenCalledTimes(1);
        expect(mockConsoleError).toHaveBeenCalledWith(`${testLevel.toUpperCase()}: ${testMessage}`, testData);
    });
    it("debug method should call console.error with message and data", () => {
        const logger = create_logger();
        const testMessage = "debug message";
        const testData = { debug: true };
        logger.debug(testMessage, testData);
        expect(mockConsoleError).toHaveBeenCalledTimes(1);
        expect(mockConsoleError).toHaveBeenCalledWith(`DEBUG: ${testMessage}`, testData);
    });
    it("should handle no additional data parameters", () => {
        const logger = create_logger();
        const testMessage = "message without data";
        logger.log("warn", testMessage);
        expect(mockConsoleError).toHaveBeenCalledWith(`WARN: ${testMessage}`);
        mockConsoleError.mockClear();
        logger.debug(testMessage);
        expect(mockConsoleError).toHaveBeenCalledWith(`DEBUG: ${testMessage}`);
    });
    it("should handle multiple data parameters", () => {
        const logger = create_logger();
        const testMessage = "message with multiple data";
        const data1 = { key1: "value1" };
        const data2 = { key2: "value2" };
        const data3 = "string data";
        logger.log("error", testMessage, data1, data2, data3);
        expect(mockConsoleError).toHaveBeenCalledWith(`ERROR: ${testMessage}`, data1, data2, data3);
        mockConsoleError.mockClear();
        logger.debug(testMessage, data1, data2, data3);
        expect(mockConsoleError).toHaveBeenCalledWith(`DEBUG: ${testMessage}`, data1, data2, data3);
    });
});