Rspec 2.8.0，期望（某事）导致ArgumentError：错误的参数数量（1表示0）

我有一个新的repo（非rails）与rspec 2.8.0。

出于某些奇怪的原因，我无法使用expect语法。

这个荒谬的规范：

require "spec_helper" describe "The Truth" do it "is true" do expect(true).to be_true end end 

原因：

 Failure/Error: expect(true).to be_true ArgumentError: wrong number of arguments (1 for 0) 

spec_helper

 RSpec.configure do |config| config.treat_symbols_as_metadata_keys_with_true_values = true config.run_all_when_everything_filtered = true config.filter_run :focus # Run specs in random order to surface order dependencies. If you find an # order dependency and want to debug it, you can fix the order by providing # the seed, which is printed after each run. # --seed 1234 config.order = 'random' config.expect_with :rspec do |c| c.syntax = :expect end end 

Answer 1

在这里它表示期望语法来自rspec 2.11，所以我猜2.8是旧的http://myronmars.to/n/dev-blog/2012/06/rspecs-new-expectation-syntax