blocks|key|578634|text|Ruby测试只是Ruby类，所以您可以使用与任何其他Test::Unit类相同的代码重用方法。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|578635|要编写共享示例，可以使用模块。|578636|module+SharedExamplesForAThing
++def+test_a_thing_does_something
++++...
++end
end

class+ThingTest+<+Test::Unit::TestCase
++include+SharedExamplesForAThing
end|code-block|syntax|javascript|578637|entityMap^0|Q|A|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@$9|P|A|Q|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|R|8|@]|D|@]|E|$]]|$1|H|3|I|5|J|7|S|8|@]|D|@]|E|$K|L]]|$1|M|3|-4|5|6|7|T|8|@]|D|@]|E|$]]]|N|$]]

<code>Test::Unit</code> tests are just Ruby classes, so you can use the same methods of code reuse as any other Ruby class.

To write shared examples, you could use a module.

<pre><code>module SharedExamplesForAThing
 def test_a_thing_does_something
 ...
 end
end

class ThingTest &lt; Test::Unit::TestCase
 include SharedExamplesForAThing
end
</code></pre>

blocks|key|4361953|text|我能够使用以下代码实现共享测试(类似于RSpec共享示例)：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4361954|module+SharedTests
++def+shared_test_for(test_name,+&block)
++++@@shared_tests+%7C%7C=+{}
++++@@shared_tests[test_name]+=+block
++end

++def+shared_test(test_name,+scenario,+*args)
++++define_method+"test_#{test_name}_for_#{scenario}"+do
++++++instance_exec+*args,+&@@shared_tests[test_name]
++++end
++end
end|code-block|syntax|javascript|4361955|要在Test::Unit测试中定义和使用共享测试，请执行以下操作：|4361956|class+BookTest+<+ActiveSupport::TestCase
++extend+SharedTests

++shared_test_for+"validate_presence"+do+%7Cattr_name%7C
++++assert_false+Books.new(valid_attrs.merge(attr_name+=>+nil)).valid?
++end

++shared_test+"validate_presence",+'foo',+:foo
++shared_test+"validate_presence",+'bar',+:bar
end|4361957|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|N|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

I was able to implement shared tests (similar to RSpec shared examples) using the following code:

<pre><code>module SharedTests
 def shared_test_for(test_name, &amp;block)
 @@shared_tests ||= {}
 @@shared_tests[test_name] = block
 end

 def shared_test(test_name, scenario, *args)
 define_method "test_#{test_name}_for_#{scenario}" do
 instance_exec *args, &amp;@@shared_tests[test_name]
 end
 end
end
</code></pre>

To define and use shared tests in a Test::Unit test:

<pre><code>class BookTest &lt; ActiveSupport::TestCase
 extend SharedTests

 shared_test_for "validate_presence" do |attr_name|
 assert_false Books.new(valid_attrs.merge(attr_name =&gt; nil)).valid?
 end

 shared_test "validate_presence", 'foo', :foo
 shared_test "validate_presence", 'bar', :bar
end
</code></pre>

blocks|key|578663|text|require+'minitest/unit'
require+'minitest/spec'
require+'minitest/autorun'

#shared+tests+in+proc/lambda/->
basics+=+->+do
++describe+'other+tests'+do
++++#override+variables+if+necessary
++++before+do
++++++@var++=+false
++++++@var3+=+true
++++end

++++it+'should+still+make+sense'+do
++++++@var.must_equal+false
++++++@var2.must_equal+true
++++++@var3.must_equal+true
++++end
++end
end

describe+'my+tests'+do

++before+do
++++@var+=+true
++++@var2+=+true
++end

++it+"should+make+sense"+do
++++@var.must_equal+true
++++@var2.must_equal+true
++end

++#call+shared+tests+here
++basics.call
end|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|578664|unstyled|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|G|8|@]|9|@]|A|$B|C]]|$1|D|3|-4|5|E|7|H|8|@]|9|@]|A|$]]]|F|$]]

<pre><code>require 'minitest/unit'
require 'minitest/spec'
require 'minitest/autorun'

#shared tests in proc/lambda/-&gt;
basics = -&gt; do
 describe 'other tests' do
 #override variables if necessary
 before do
 @var = false
 @var3 = true
 end

 it 'should still make sense' do
 @var.must_equal false
 @var2.must_equal true
 @var3.must_equal true
 end
 end
end

describe 'my tests' do

 before do
 @var = true
 @var2 = true
 end

 it "should make sense" do
 @var.must_equal true
 @var2.must_equal true
 end

 #call shared tests here
 basics.call
end
</code></pre>

blocks|key|2895126|text|看看我几年前写的这个要点。它仍然很好用：https://gist.github.com/jodosha/1560208|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|2895127|#+adapter_test.rb
require+'test_helper'

shared_examples_for+'An+Adapter'+do
++describe+'#read'+do
++++#+...
++end
end|code-block|syntax|javascript|2895128|如下所示：|2895129|#+memory_test.rb
require+'test_helper'

describe+Memory+do
++it_behaves_like+'An+Adapter'
end|2895130|entityMap|0|LINK|mutability|MUTABLE|url|https://gist.github.com/jodosha/1560208^0|K|13|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@]|9|@$A|V|B|W|1|X]]|C|$]]|$1|D|3|E|5|F|7|Y|8|@]|9|@]|C|$G|H]]|$1|I|3|J|5|6|7|Z|8|@]|9|@]|C|$]]|$1|K|3|L|5|F|7|10|8|@]|9|@]|C|$G|H]]|$1|M|3|-4|5|6|7|11|8|@]|9|@]|C|$]]]|N|$O|$5|P|Q|R|C|$S|T]]]]

Look at this gist I wrote a couple of years ago. It still works great: <a href="https://gist.github.com/jodosha/1560208" rel="nofollow">https://gist.github.com/jodosha/1560208</a>

<pre><code># adapter_test.rb
require 'test_helper'

shared_examples_for 'An Adapter' do
 describe '#read' do
 # ...
 end
end
</code></pre>

Used like this:

<pre><code># memory_test.rb
require 'test_helper'

describe Memory do
 it_behaves_like 'An Adapter'
end
</code></pre>

blocks|key|2895153|text|如果您正在使用rails+(或仅使用active_support)，请使用Concern。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|2895154|require+'active_support/concern'

module+SharedTests
++extend+ActiveSupport::Concern

++included+do

++++#+This+way,+test+name+can+be+a+string+:)
++++test+'banana+banana+banana'+do
++++++assert+true
++++end

++end
end|code-block|syntax|javascript|2895155|如果你没有使用active_support，那就使用Module#class_eval吧。|2895156|这项技术建立在Andy+H.的答案之上，他指出：|2895157|单元测试就是|2895158|类，所以你可以使用普通的代码重用技术|blockquote|2895159|2895160|2895161|但因为它支持使用ActiveSupport::Testing::Declarative#test，所以它的优点是不会耗尽下划线键:)|2895162|entityMap|0|LINK|mutability|MUTABLE|url|https://github.com/rails/rails/blob/f37ad331089f64ab0386e8ac94b6626b45c38a1e/activesupport/lib/active_support/concern.rb|1|https://stackoverflow.com/users/725792/andy-h|2|https://github.com/rails/rails/blob/a5ab38c7bb99e135e29f5727e3e75a1e562d8216/activesupport/lib/active_support/testing/declarative.rb^0|11|7|11|7|0|0|0|Q|H|0|7|7|1|0|0|0|0|0|8|14|8|14|2|0^^$0|@$1|2|3|4|5|6|7|19|8|@$9|1A|A|1B|B|C]]|D|@$9|1C|A|1D|1|1E]]|E|$]]|$1|F|3|G|5|H|7|1F|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|1G|8|@$9|1H|A|1I|B|C]]|D|@]|E|$]]|$1|M|3|N|5|6|7|1J|8|@]|D|@$9|1K|A|1L|1|1M]]|E|$]]|$1|O|3|P|5|6|7|1N|8|@]|D|@]|E|$]]|$1|Q|3|R|5|S|7|1O|8|@]|D|@]|E|$]]|$1|T|3|-4|5|6|7|1P|8|@]|D|@]|E|$]]|$1|U|3|-4|5|6|7|1Q|8|@]|D|@]|E|$]]|$1|V|3|W|5|6|7|1R|8|@$9|1S|A|1T|B|C]]|D|@$9|1U|A|1V|1|1W]]|E|$]]|$1|X|3|-4|5|6|7|1X|8|@]|D|@]|E|$]]]|Y|$Z|$5|10|11|12|E|$13|14]]|15|$5|10|11|12|E|$13|16]]|17|$5|10|11|12|E|$13|18]]]]

If you are using rails (or just active_support), use a <a href="https://github.com/rails/rails/blob/f37ad331089f64ab0386e8ac94b6626b45c38a1e/activesupport/lib/active_support/concern.rb" rel="nofollow noreferrer"><code>Concern</code></a>.

<pre><code>require 'active_support/concern'

module SharedTests
 extend ActiveSupport::Concern

 included do

 # This way, test name can be a string :)
 test 'banana banana banana' do
 assert true
 end

 end
end
</code></pre>

If you're not using active_support, just use <code>Module#class_eval</code>.

This technique builds on <a href="https://stackoverflow.com/users/725792/andy-h">Andy H.</a>'s answer, where he points out that:

<blockquote>
 Test::Unit tests are just Ruby classes, so you can use [normal techniques] of code reuse
</blockquote>

but because it enables the use of <a href="https://github.com/rails/rails/blob/a5ab38c7bb99e135e29f5727e3e75a1e562d8216/activesupport/lib/active_support/testing/declarative.rb" rel="nofollow noreferrer"><code>ActiveSupport::Testing::Declarative#test</code></a> it has the advantage of not wearing out your underscore key :)

Is there a plugin/extension similar to shared_examples in RSpec for Test::Unit tests?

How do i get RSpec's shared examples like behavior in Ruby Test::Unit?

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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RSpec中是否有类似于shared_examples的插件/扩展用于测试：：单元测试？

问如何获取RSpec的共享示例，如Ruby Test::Unit中的行为？
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问如何获取RSpec的共享示例，如Ruby Test::Unit中的行为？EN