Feature: OpenRouter provider adapter coverage
  As a maintainer validating OpenRouter integrations
  I want Behave scenarios for the OpenRouter chat provider
  So that constructor guards and header propagation stay regression tested

  @unit @providers @openrouter
  Scenario: OpenRouter provider instantiates ChatOpenAI with provided credentials
    Given I have sample provider domain inputs
    When I create an OpenRouter chat provider with API key "sk-openrouter-unit" and model "anthropic/claude-sonnet-4-20250514"
    And I request plan generation from the OpenRouter provider
    Then the OpenRouter provider should construct ChatOpenAI with api key "sk-openrouter-unit", model "anthropic/claude-sonnet-4-20250514", and base url "https://openrouter.ai/api/v1"
    And the OpenRouter provider metadata should report name "openrouter" and model "anthropic/claude-sonnet-4-20250514"

  @unit @providers @openrouter
  Scenario: OpenRouter provider forwards extra kwargs and reports token usage
    Given I have sample provider domain inputs
    And the plan generation graph returns a generated change for "app/openrouter_provider.py"
    And the OpenRouter provider token estimator returns 512 tokens
    And I set the OpenRouter provider extra kwargs "temperature=0.15,max_tokens=2048"
    When I create an OpenRouter chat provider with API key "sk-openrouter-unit" and model "anthropic/claude-sonnet-4-20250514"
    And I request plan generation from the OpenRouter provider
    Then the OpenRouter provider should construct ChatOpenAI with api key "sk-openrouter-unit", model "anthropic/claude-sonnet-4-20250514", and base url "https://openrouter.ai/api/v1"
    And the OpenRouter provider should include kwargs "temperature=0.15,max_tokens=2048" in the ChatOpenAI call
    And the OpenRouter provider response should include 1 generated change for "app/openrouter_provider.py"
    And the OpenRouter provider response token count should equal 512

  @unit @providers @openrouter
  Scenario: OpenRouter provider attaches organization headers when provided
    Given I have sample provider domain inputs
    And I set the OpenRouter provider default headers "X-Trace-ID=trace-openrouter"
    And I set the OpenRouter provider organization "cleveragents.dev"
    When I create an OpenRouter chat provider with API key "sk-openrouter-unit" and model "anthropic/claude-sonnet-4-20250514"
    And I request plan generation from the OpenRouter provider
    Then the OpenRouter provider should include headers "X-Trace-ID=trace-openrouter,HTTP-Referer=cleveragents.dev,X-Title=cleveragents.dev" in the ChatOpenAI call

  @unit @providers @openrouter
  Scenario: OpenRouter provider rejects missing API key
    Given I have sample provider domain inputs
    When I attempt to create an OpenRouter chat provider without an API key
    Then the OpenRouter provider creation should fail with error "OpenRouter API key is required"