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实例公共方法

create_generated_attribute(attribute_type, name = "test", index = nil)

通过提供属性类型,以及可选的属性名称,来创建一个 Rails::Generators::GeneratedAttribute。

create_generated_attribute(:string, "name")
# File railties/lib/rails/generators/testing/behavior.rb, line 89
def create_generated_attribute(attribute_type, name = "test", index = nil)
  Rails::Generators::GeneratedAttribute.parse([name, attribute_type, index].compact.join(":"))
end

generator(args = default_arguments, options = {}, config = {})

实例化生成器。

# File railties/lib/rails/generators/testing/behavior.rb, line 81
def generator(args = default_arguments, options = {}, config = {})
  @generator ||= generator_class.new(args, options, config.reverse_merge(destination_root: destination_root))
end

run_generator(args = default_arguments, config = {})

运行为该类配置的生成器。第一个参数是一个类似命令行参数的数组。

class AppGeneratorTest < Rails::Generators::TestCase
  tests AppGenerator
  destination File.expand_path("../tmp", __dir__)
  setup :prepare_destination

  test "database.yml is not created when skipping Active Record" do
    run_generator %w(myapp --skip-active-record)
    assert_no_file "config/database.yml"
  end
end

您可以提供一个配置哈希作为第二个参数。此方法返回生成器打印的输出。

# File railties/lib/rails/generators/testing/behavior.rb, line 67
def run_generator(args = default_arguments, config = {})
  args += ["--skip-bundle"] unless args.include?("--no-skip-bundle") || args.include?("--dev")
  args += ["--skip-bootsnap"] unless args.include?("--no-skip-bootsnap") || args.include?("--skip-bootsnap")

  if ENV["RAILS_LOG_TO_STDOUT"] == "true"
    generator_class.start(args, config.reverse_merge(destination_root: destination_root))
  else
    capture(:stdout) do
      generator_class.start(args, config.reverse_merge(destination_root: destination_root))
    end
  end
end

实例私有方法

prepare_destination()

清除目标目录中的所有文件和目录。

# File railties/lib/rails/generators/testing/behavior.rb, line 103
def prepare_destination # :doc:
  rm_rf(destination_root)
  mkdir_p(destination_root)
end