Feature: Route Bridge Module Coverage
  As a developer
  I want to test all functionality in the route bridge module
  So that we achieve 90%+ code coverage for the route_bridge.py file

  Background:
    Given I have a clean test environment for route bridge

  Scenario: Test RouteBridge initialization
    Given I have a route bridge stream router and agents
    When I create the route bridge instance
    Then the route bridge should be initialized correctly
    And the route bridge logger should be set up
    And route bridge active conversions should be empty

  Scenario: Test RouteBridge initialization with scheduler
    Given I have a route bridge stream router and agents
    And I have an AsyncIO scheduler
    When I create a RouteBridge instance with scheduler
    Then the route bridge should be initialized with scheduler
    And the route bridge scheduler should be stored correctly

  Scenario: Test check_upgrade_conditions - no bridge config
    Given I have a RouteBridge instance
    And I have a route config without bridge configuration
    And I have a stream message
    When I check upgrade conditions
    Then the route bridge upgrade result should be False

  Scenario: Test check_upgrade_conditions - wrong route type
    Given I have a RouteBridge instance
    And I have a graph route config with bridge configuration
    And I have a stream message
    When I check upgrade conditions
    Then the route bridge upgrade result should be False

  Scenario: Test check_upgrade_conditions - needs_state condition
    Given I have a RouteBridge instance
    And I have a stream route config with needs_state upgrade condition
    And I have a stream message with requires_state metadata
    When I check upgrade conditions
    Then the route bridge upgrade result should be True

  Scenario: Test check_upgrade_conditions - message_count condition
    Given I have a RouteBridge instance
    And I have a stream route config with message_count upgrade condition
    And I have processed enough messages to trigger upgrade
    When I check upgrade conditions
    Then the route bridge upgrade result should be True
    And the route bridge message count should be at least 5

  Scenario: Test check_upgrade_conditions - complexity_threshold condition
    Given I have a RouteBridge instance
    And I have a stream route config with complexity_threshold upgrade condition
    And I have a complex route configuration
    When I check upgrade conditions
    Then the route bridge upgrade result should be True

  Scenario: Test check_upgrade_conditions - non-callable predicate
    Given I have a RouteBridge instance
    And I have a stream route config with non-callable custom_predicate
    And I have a stream message
    When I check upgrade conditions
    Then the route bridge upgrade result should be False

  Scenario: Test check_downgrade_conditions - no bridge config
    Given I have a RouteBridge instance
    And I have a route config without bridge configuration
    And I have a graph state
    When I check downgrade conditions
    Then the downgrade result should be False

  Scenario: Test check_downgrade_conditions - wrong route type
    Given I have a RouteBridge instance
    And I have a stream route config with bridge configuration
    And I have a graph state
    When I check downgrade conditions
    Then the downgrade result should be False

  Scenario: Test check_downgrade_conditions - idle_time condition
    Given I have a RouteBridge instance
    And I have a graph route config with idle_time downgrade condition
    And I have a graph state that has been idle too long
    When I check downgrade conditions
    Then the downgrade result should be True

  Scenario: Test check_downgrade_conditions - state_size condition
    Given I have a RouteBridge instance
    And I have a graph route config with state_size downgrade condition
    And I have a graph state with minimal messages
    When I check downgrade conditions
    Then the downgrade result should be True

  Scenario: Test check_downgrade_conditions - no_conditionals_used condition
    Given I have a RouteBridge instance
    And I have a graph route config with no_conditionals_used downgrade condition
    And I have a graph state with no conditional edges used
    When I check downgrade conditions
    Then the downgrade result should be True

  Scenario: Test _get_message_count functionality
    Given I have a RouteBridge instance
    And I seed a message count for the route
    When I get message count for a route
    Then the route bridge message count should be returned
    And the route bridge message count result should be a valid integer

  Scenario: Test error handling in downgrade_graph_to_stream
    Given I have a clean test environment for route bridge
    Given I have a RouteBridge instance
    And I have a graph route config for downgrade
    And I have a corrupted LangGraph instance
    When I attempt to downgrade graph to stream
    Then route bridge error handling should occur
    And the route bridge system should remain stable


  Scenario: Test complex upgrade downgrade cycle
    Given I have a RouteBridge instance
    And I have a route config that supports both upgrade and downgrade
    And I have a stream message with requires_state metadata
    When I perform an upgrade and then downgrade cycle
    Then the cycle should complete successfully
    And the final configuration should be consistent
    And active conversions should be tracked correctly