Feature: LangGraph Node Initialization, Execution, and Error Handling
  As a CleverAgents developer
  I want nodes to initialize correctly, execute across all node types, and handle errors with retries
  So that graph execution is reliable for agent, function, conditional, subgraph, and tool nodes

  Background:
    Given the LangGraph nodes system is initialized

  Scenario: Node initialization and core execution paths
    Given I have various node configurations
    When I test node initialization and basic execution
    Then all node types should initialize correctly
    And basic execution should work for each type

  Scenario: Agent node execution scenarios
    Given I have various node configurations
    When I test agent node execution paths
    Then agent execution should handle valid agents correctly
    And error cases should be handled properly

  Scenario: Function node execution scenarios
    Given I have various node configurations
    When I test function node execution paths
    Then all built-in functions should execute correctly
    And unknown functions should return empty results

  Scenario: Conditional node execution scenarios
    Given I have various node configurations
    And I have conditional node test configurations
    When I test conditional logic execution
    Then all condition types should evaluate correctly
    And conditional edge cases should be handled properly

  Scenario: Node utility methods and properties
    Given I have various node configurations
    When I test node utility methods
    Then timeout and parallel settings should work
    And edge operations should function correctly

  Scenario: Error handling and retry mechanisms
    Given I have various node configurations
    When I test error handling scenarios
    Then errors should be captured and returned properly
    And retry policies should work without delays