linkedout/ai-analyzer/test/logger.test.js

/**
 * Test file for logger functionality
 */

const { Logger, logger } = require("../src/logger");

describe("Logger", () => {
  let consoleSpy;
  let consoleWarnSpy;
  let consoleErrorSpy;

  beforeEach(() => {
    consoleSpy = jest.spyOn(console, "log").mockImplementation();
    consoleWarnSpy = jest.spyOn(console, "warn").mockImplementation();
    consoleErrorSpy = jest.spyOn(console, "error").mockImplementation();
  });

  afterEach(() => {
    consoleSpy.mockRestore();
    consoleWarnSpy.mockRestore();
    consoleErrorSpy.mockRestore();
  });

  test("should create default logger instance", () => {
    expect(logger).toBeDefined();
    expect(logger).toBeInstanceOf(Logger);
  });

  test("should log info messages", () => {
    logger.info("Test message");
    expect(consoleSpy).toHaveBeenCalled();
  });

  test("should create custom logger with disabled levels", () => {
    const customLogger = new Logger({ debug: false });
    customLogger.debug("This should not log");
    expect(consoleSpy).not.toHaveBeenCalled();
  });

  test("should use emoji prefixes for convenience methods", () => {
    logger.step("Test step");
    logger.ai("Test AI");
    logger.location("Test location");
    expect(consoleSpy).toHaveBeenCalledTimes(3);
  });

  test("should configure levels at runtime", () => {
    const customLogger = new Logger();
    customLogger.setLevel("debug", false);
    customLogger.debug("This should not log");
    expect(consoleSpy).not.toHaveBeenCalled();
  });

  test("should go silent when requested", () => {
    const customLogger = new Logger();
    customLogger.silent();
    customLogger.info("This should not log");
    customLogger.error("This should not log");
    expect(consoleSpy).not.toHaveBeenCalled();
    expect(consoleErrorSpy).not.toHaveBeenCalled();
  });

  // Additional test cases for comprehensive coverage

  test("should log warning messages", () => {
    logger.warning("Test warning");
    expect(consoleWarnSpy).toHaveBeenCalled();
  });

  test("should log error messages", () => {
    logger.error("Test error");
    expect(consoleErrorSpy).toHaveBeenCalled();
  });

  test("should log success messages", () => {
    logger.success("Test success");
    expect(consoleSpy).toHaveBeenCalled();
  });

  test("should log debug messages", () => {
    logger.debug("Test debug");
    expect(consoleSpy).toHaveBeenCalled();
  });

  test("should respect disabled warning level", () => {
    const customLogger = new Logger({ warning: false });
    customLogger.warning("This should not log");
    expect(consoleWarnSpy).not.toHaveBeenCalled();
  });

  test("should respect disabled error level", () => {
    const customLogger = new Logger({ error: false });
    customLogger.error("This should not log");
    expect(consoleErrorSpy).not.toHaveBeenCalled();
  });

  test("should respect disabled success level", () => {
    const customLogger = new Logger({ success: false });
    customLogger.success("This should not log");
    expect(consoleSpy).not.toHaveBeenCalled();
  });

  test("should respect disabled info level", () => {
    const customLogger = new Logger({ info: false });
    customLogger.info("This should not log");
    expect(consoleSpy).not.toHaveBeenCalled();
  });

  test("should test all convenience methods", () => {
    logger.step("Test step");
    logger.search("Test search");
    logger.ai("Test AI");
    logger.location("Test location");
    logger.file("Test file");
    expect(consoleSpy).toHaveBeenCalledTimes(5);
  });

  test("should enable all levels with verbose method", () => {
    const customLogger = new Logger({ debug: false, info: false });
    customLogger.verbose();
    customLogger.debug("This should log");
    customLogger.info("This should log");
    expect(consoleSpy).toHaveBeenCalledTimes(2);
  });

  test("should handle setLevel with invalid level gracefully", () => {
    const customLogger = new Logger();
    expect(() => {
      customLogger.setLevel("invalid", false);
    }).not.toThrow();
  });

  test("should format messages with timestamps", () => {
    logger.info("Test message");
    const loggedMessage = consoleSpy.mock.calls[0][0];
    expect(loggedMessage).toMatch(/\[\d{1,2}:\d{2}:\d{2}\]/);
  });

  test("should include level in formatted messages", () => {
    logger.info("Test message");
    const loggedMessage = consoleSpy.mock.calls[0][0];
    expect(loggedMessage).toContain("[INFO]");
  });

  test("should disable colors when colors option is false", () => {
    const customLogger = new Logger({ colors: false });
    customLogger.info("Test message");
    const loggedMessage = consoleSpy.mock.calls[0][0];
    // Should not contain ANSI color codes
    expect(loggedMessage).not.toMatch(/\u001b\[/);
  });

  test("should enable colors by default", () => {
    logger.info("Test message");
    const loggedMessage = consoleSpy.mock.calls[0][0];
    // Should contain ANSI color codes
    expect(loggedMessage).toMatch(/\u001b\[/);
  });

  test("should handle multiple level configurations", () => {
    const customLogger = new Logger({
      debug: false,
      info: true,
      warning: false,
      error: true,
      success: false,
    });

    customLogger.debug("Should not log");
    customLogger.info("Should log");
    customLogger.warning("Should not log");
    customLogger.error("Should log");
    customLogger.success("Should not log");

    expect(consoleSpy).toHaveBeenCalledTimes(1);
    expect(consoleErrorSpy).toHaveBeenCalledTimes(1);
    expect(consoleWarnSpy).not.toHaveBeenCalled();
  });

  test("should handle empty or undefined messages", () => {
    expect(() => {
      logger.info("");
      logger.info(undefined);
      logger.info(null);
    }).not.toThrow();
  });

  test("should handle complex message objects", () => {
    const testObj = { key: "value", nested: { data: "test" } };
    expect(() => {
      logger.info(testObj);
    }).not.toThrow();
  });
});