RSpec ：想要对一次性方法进行多次测试，包括夹具

发布于 2024-09-28 18:02:35 字数 547 浏览 8 评论 0原文

我正在开发 Rails 应用程序。我想用 rspec 测试我的方法“开始！”我的模型备份。

所以这里的规范（也都是方法）：

Backup 应该将文件复制到文件夹 /backups
Backup 应该检查 md5 sum
Backup 应该删除原始文件文件

对于我的测试，我根据固定装置创建假文件：

MyFile.all.each{|r| system("touch #{r.path}") }

然后，@backup.start！应该删除其中一些文件（不是全部）。

问题是：我不想为每个测试重新运行所有操作！我可以编写一个大型测试，其中包含所有要求，但这会很难看...

before(:all) 模式，上下文中的事件在所有上下文之前运行，而固定装置则不是出于设计原因，可用。

有什么建议吗？

谢谢。

原文

I'm working on a Rails app.
I want to test with rspec my method "start!" of my model Backup.

So here the specs (all are methods, too):

Backup should copy files to folder /backups
Backup should check md5 sum
Backup should delete original files

For my tests, I create fake files, based on fixtures :

MyFile.all.each{|r| system("touch #{r.path}") }

Then, @backup.start! should delete some of this files (not all).

The problem is : I don't want to re-run all the opérations for each test !
I could write one big test, with all the requirements include in it, but it would be ugly...

The before(:all) pattern, event in contexts runs before all contexts, and fixtures are not available, for design reasons.

Any suggestions ?

Thanks.

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青衫负雪 2024-10-05 18:02:35

如果每个方法都是独立的，则可以模拟除一个方法之外的所有方法，并每次更改该方法。

您可以选择并限制您想要测试的方法。

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罪#恶を代价 2024-10-05 18:02:35

感谢 http://thefrontiergroup。 com.au/blog/2010/01/using-rspec-example-groups-for-common-functionity/，

我找到了解决方案：

# /spec/support/backuped_files_examples.rb
shared_examples_for "backed up up files" do
  before(:all) do
    # Fixtures are unreachable for now, 
    # but test db can be use and is filled with fixtures
    MyFile.all.each{|r| system("touch #{r.path}") }
    @backup = Backup.create(...) 
    @backup.start!
  end
end

# /spec/models/backup_spec.rb
describe Backup do  
  context " (when #start! have been called)" do

    before(:each) do
      @files_to_backup = MyFile.all(:conditions => (...))
    end

    it_should_behave_like "backed up up files"
    it "should have deleted wanted files" do
      @files_to_backup.each do |file|
        File.exists(file.path).should be_false
      end
    end
  end
end

Thanks to http://thefrontiergroup.com.au/blog/2010/01/using-rspec-example-groups-for-common-functionality/,

I found the solution :

# /spec/support/backuped_files_examples.rb
shared_examples_for "backed up up files" do
  before(:all) do
    # Fixtures are unreachable for now, 
    # but test db can be use and is filled with fixtures
    MyFile.all.each{|r| system("touch #{r.path}") }
    @backup = Backup.create(...) 
    @backup.start!
  end
end

# /spec/models/backup_spec.rb
describe Backup do  
  context " (when #start! have been called)" do

    before(:each) do
      @files_to_backup = MyFile.all(:conditions => (...))
    end

    it_should_behave_like "backed up up files"
    it "should have deleted wanted files" do
      @files_to_backup.each do |file|
        File.exists(file.path).should be_false
      end
    end
  end
end

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