class RSpec::Core::Example

def self.delegate_to_metadata(key)
  define_method(key) { @metadata[key] }
end

def assign_generated_description
  if metadata[:description].empty? && (description = generate_description)
    metadata[:description] = description
    metadata[:full_description] << description
  end
ensure
  RSpec::Matchers.clear_generated_description
end

def description
  description = if metadata[:description].to_s.empty?
                  location_description
                else
                  metadata[:description]
                end
  RSpec.configuration.format_docstrings_block.call(description)
end

def example_group
  @example_group_class
end

def fail_with_exception(reporter, exception)
  start(reporter)
  set_exception(exception)
  finish(reporter)
end

def finish(reporter)
  pending_message = execution_result.pending_message
  if @exception
    record_finished :failed
    execution_result.exception = @exception
    reporter.example_failed self
    false
  elsif pending_message
    record_finished :pending
    execution_result.pending_message = pending_message
    reporter.example_pending self
    true
  else
    record_finished :passed
    reporter.example_passed self
    true
  end
end

def generate_description
  RSpec::Matchers.generated_description
rescue Exception => e
  location_description + " (Got an error when generating description " \
    "from matcher: #{e.class}: #{e.message} -- #{e.backtrace.first})"
end

def hooks
  example_group_instance.singleton_class.hooks
end

def initialize(example_group_class, description, user_metadata, example_block=nil)
  @example_group_class = example_group_class
  @example_block       = example_block
  @metadata = Metadata::ExampleHash.create(
    @example_group_class.metadata, user_metadata, description, example_block
  )
  @example_group_instance = @exception = nil
  @clock = RSpec::Core::Time
end

def inspect_output
  inspect_output = "\"#{description}\""
  unless metadata[:description].to_s.empty?
    inspect_output << " (#{location})"
  end
  inspect_output
end

def instance_exec(*args, &block)
  @example_group_instance.instance_exec(*args, &block)
end

def instance_exec_with_rescue(context, &block)
  @example_group_instance.instance_exec(self, &block)
rescue Exception => e
  set_exception(e, context)
end

def location_description
  "example at #{location}"
end

def mocks_need_verification?
  exception.nil? || execution_result.pending_fixed?
end

def record_finished(status)
  execution_result.record_finished(status, clock.now)
end

def rerun_argument
  loaded_spec_files = RSpec.configuration.loaded_spec_files
  Metadata.ascending(metadata) do |meta|
    return meta[:location] if loaded_spec_files.include?(meta[:absolute_file_path])
  end
end

def run(example_group_instance, reporter)
  @example_group_instance = example_group_instance
  hooks.register_global_singleton_context_hooks(self, RSpec.configuration.hooks)
  RSpec.configuration.configure_example(self)
  RSpec.current_example = self
  start(reporter)
  Pending.mark_pending!(self, pending) if pending?
  begin
    if skipped?
      Pending.mark_pending! self, skip
    elsif !RSpec.configuration.dry_run?
      with_around_and_singleton_context_hooks do
        begin
          run_before_example
          @example_group_instance.instance_exec(self, &@example_block)
          if pending?
            Pending.mark_fixed! self
            raise Pending::PendingExampleFixedError,
                  'Expected example to fail since it is pending, but it passed.',
                  [location]
          end
        rescue Pending::SkipDeclaredInExample
          # no-op, required metadata has already been set by the `skip`
          # method.
        rescue Exception => e
          set_exception(e)
        ensure
          run_after_example
        end
      end
    end
  rescue Exception => e
    set_exception(e)
  ensure
    ExampleGroup.each_instance_variable_for_example(@example_group_instance) do |ivar|
      @example_group_instance.instance_variable_set(ivar, nil)
    end
    @example_group_instance = nil
  end
  finish(reporter)
ensure
  RSpec.current_example = nil
end

def run_after_example
  assign_generated_description if defined?(::RSpec::Matchers)
  hooks.run(:after, :example, self)
  verify_mocks
ensure
  @example_group_instance.teardown_mocks_for_rspec
end

def run_before_example
  @example_group_instance.setup_mocks_for_rspec
  hooks.run(:before, :example, self)
end

def set_exception(exception, context=nil)
  if pending? && !(Pending::PendingExampleFixedError === exception)
    execution_result.pending_exception = exception
  else
    if @exception
      # An error has already been set; we don't want to override it,
      # but we also don't want silence the error, so let's print it.
      msg = <<-EOS
rror occurred #{context}
exception.class}: #{exception.message}
curred at #{exception.backtrace.first}
      EOS
      RSpec.configuration.reporter.message(msg)
    end
    @exception ||= exception
  end
end

def skip_message
  if String === skip
    skip
  else
    Pending::NO_REASON_GIVEN
  end
end

def skip_with_exception(reporter, exception)
  start(reporter)
  Pending.mark_skipped! self, exception.argument
  finish(reporter)
end

def start(reporter)
  reporter.example_started(self)
  execution_result.started_at = clock.now
end

def verify_mocks
  @example_group_instance.verify_mocks_for_rspec if mocks_need_verification?
rescue Exception => e
  if pending?
    execution_result.pending_fixed = false
    execution_result.pending_exception = e
    @exception = nil
  else
    set_exception(e)
  end
end

def with_around_and_singleton_context_hooks
  singleton_context_hooks_host = example_group_instance.singleton_class
  singleton_context_hooks_host.run_before_context_hooks(example_group_instance)
  with_around_example_hooks { yield }
ensure
  singleton_context_hooks_host.run_after_context_hooks(example_group_instance)
end

def with_around_example_hooks
  hooks.run(:around, :example, self) { yield }
rescue Exception => e
  set_exception(e, "in an `around(:example)` hook")
end