Question

如果我专门标记规范，或者至少仅针对重点示例，我希望能够在我的控制台中看到SQL输出。我可以通过添加：

来显示它

ActiveRecord::Base.logger = Logger.new(STDOUT)

但这是详细的。我试图使用像这样的周围条件但没有成功：

# log SQL to console for tests tagged with :db
config.around do |example|
  if example.metadata[:db]
    ActiveRecord::Base.logger = Logger.new(STDOUT)
  end
end

如何实现？

Answer 1

我必须在before

中使用after和spec_helper.rb

# log SQL to console for tests tagged with :db
config.before(:each, db: true) do
  @default_logger = ActiveRecord::Base.logger
  ActiveRecord::Base.logger = Logger.new(STDOUT)
end

# log SQL to console for tests tagged with :db
config.after(:each, db: true) do
  ActiveRecord::Base.logger = @default_logger
end

我喜欢保罗N.建议“确保”可能性并摆脱实例变量的想法。 Paul N.的方法引发了语法错误，因为ensure子句只能在方法中运行。

def with_std_out_logger
  default_logger = ActiveRecord::Base.logger
  ActiveRecord::Base.logger = Logger.new(STDOUT)
  yield
ensure
  ActiveRecord::Base.logger = default_logger
end

config.around(:each, db: true) do |example|
  with_std_out_logger { example.run }
end

Answer 2

RSpec.configure do |config|
  config.around(:example, db: true) do |example|
    old_logger = ActiveRecord::Base.logger
    ActiveRecord::Base.logger = Logger.new(STDOUT)

    example.run

  ensure
     ActiveRecord::Base.logger = old_logger
  end
end

Rspec log sql to console for filtered / tagged specs

2 个答案: