Feature: Main Module Entry Point
  As a developer
  I want to test the __main__ module entry point
  So that I ensure proper application startup

  Scenario: Run function returns success code
    Given the CLI main function will return 0
    When I call the run function
    Then the run function should return 0

  Scenario: Run function returns error code
    Given the CLI main function will return 1
    When I call the run function
    Then the run function should return 1

  Scenario: Run function handles exceptions
    Given the CLI main function will raise an exception
    When I call the run function expecting an exception
    Then an exception should be raised

  Scenario: Module has required attributes
    When I import the __main__ module
    Then the module should have a "run" attribute
    And the "run" attribute should be callable