小编Dao*_*ang的帖子

我有一个spec文件,看起来像:

# foo_spec.rb
class Foo
end

describe Foo do
  let(:foo) { 'foo' }
  subject { bar }

  # before(:all) { foo } # The seond example fails if uncomment this line.

  describe 'test one' do
    let(:bar) { 'one' }
    it        { should == 'one' }
  end

  describe 'test two' do
    let(:bar) { 'two' }
    it        { should == 'two' }
  end
end

这两个例子都按预期传递.但是,如果我取消注释before(:all),则第二个示例将失败:

1) Foo test two
     Failure/Error: it        { should == 'two' }
       expected: "two"
            got: "one" (using ==) …