Feature: Error Message Handling
  As a developer
  I want error messages to be handled correctly
  So that useful error information is preserved without breaking the sheet

  Background:
    Given an authenticated sheets tracker
    And a sheet with the following datasets
      | Dataset Name | Status      | Error |
      | wordnet      | NOT STARTED |       |

  Scenario: Truncate error message longer than 500 characters
    Given an error message longer than 500 characters
    When I mark "wordnet" with the long error message
    Then the error message should be truncated to 500 characters
    And the update should succeed

  Scenario: Preserve error message shorter than 500 characters
    Given an error message of 200 characters
    When I mark "wordnet" with the error message
    Then the error message should be preserved exactly
    And the update should succeed

  Scenario: Handle error message exactly 500 characters
    Given an error message exactly 500 characters long
    When I mark "wordnet" with the error message
    Then the error message should be preserved exactly
    And the update should succeed

  Scenario: Handle error message with special characters
    Given an error message with special characters "Error: 'test' & \"quotes\" <tags>"
    When I mark "wordnet" with the error message
    Then the error message should be preserved correctly
    And special characters should be handled properly

  Scenario: Handle error message with newlines
    Given an error message with newline characters
    When I mark "wordnet" with the error message
    Then the error message should be stored correctly
    And newlines should be preserved or handled appropriately

  Scenario: Clear error message when marking as completed
    Given "wordnet" has error "Previous error message"
    When I mark "wordnet" as completed
    Then the error message should be cleared
    And the status should be "DONE"

  Scenario: Clear error message when resetting to NOT STARTED without error
    Given "wordnet" has error "Previous error message"
    When I reset "wordnet" to not started without error message
    Then the error message should be cleared
    And the status should be "NOT STARTED"

  Scenario: Update error message when resetting to NOT STARTED with error
    Given "wordnet" has error "Old error message"
    When I reset "wordnet" to not started with error "New error message"
    Then the error message should be updated to "New error message"
    And the status should be "NOT STARTED"