Feature: Google provider adapter coverage
  As a maintainer validating real provider adapters
  I want Behave scenarios for the Google chat provider
  So that constructor guards and LangChain handoffs stay regression tested

  @unit @providers @google
  Scenario: Google provider instantiates ChatGoogleGenerativeAI with provided credentials
    Given I have sample provider domain inputs
    When I create a Google chat provider with API key "sk-google-unit" and model "gemini-2.0-flash"
    And I request plan generation from the Google provider
    Then the Google provider should construct ChatGoogleGenerativeAI with api key "sk-google-unit" and model "gemini-2.0-flash"
    And the Google provider metadata should report name "google" and model "gemini-2.0-flash"

  @unit @providers @google
  Scenario: Google provider forwards extra kwargs to ChatGoogleGenerativeAI
    Given I have sample provider domain inputs
    And I set the Google provider extra kwargs "temperature=0.25,max_output_tokens=2048"
    When I create a Google chat provider with API key "sk-google-unit" and model "gemini-2.0-pro"
    And I request plan generation from the Google provider
    Then the Google provider should construct ChatGoogleGenerativeAI with api key "sk-google-unit" and model "gemini-2.0-pro"
    And the Google provider should include kwargs "temperature=0.25,max_output_tokens=2048" in the ChatGoogleGenerativeAI call
    And the Google provider metadata should report name "google" and model "gemini-2.0-pro"

  @unit @providers @google
  Scenario: Google provider returns generated changes with token count
    Given I have sample provider domain inputs
    And the plan generation graph returns a generated change for "app/google_provider.py"
    And the Google provider token estimator returns 256 tokens
    When I create a Google chat provider with API key "sk-google-unit" and model "gemini-2.0-flash"
    And I request plan generation from the Google provider
    Then the Google provider response should include 1 generated change for "app/google_provider.py"
    And the Google provider response token count should equal 256

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