rspec - =~ 期望语法的 rspec 错误不支持运算符匹配器

Question

得到

The expect syntax does not support operator matchers, 
so you must pass a matcher to `#to`.

对于以前的代码

class_methods.all.should =~ [:bar, :hello]

我想改成

expect(class_methods.all).to =~ [:bar, :hello]

我也试过

expect(class_methods.all).to match [:bar, :hello]

和

expect(class_methods.all).to match ([:bar, :hello])

和

expect(class_methods.all match([:bar, :hello])).to be_true
# this one gives wrong number of arguments

Answer 1

=~我相信for 数组的替换是match_array.

expect(class_methods.all).to match_array [:bar, :hello]

Answer 2

你可以试试：

subject { class_methods.all }

it { should match_array [:bar, :hello] }

Answer 3

为了清楚起见，根据https://www.relishapp.com/rspec/rspec-expectations/v/3-0/docs/built-in-matchers，而新expect语法支持各种比较运算符（例如<，<=等）与 结合使用be，不支持=~or ==。该match方法替换=~了字符串和正则表达式，match_array处理数组的特殊情况（根据其他答案）。