blocks|key|4379759|text|感谢Oliver+Maksimovic的评论，它帮助我找到了一个适合我的解决方案。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|4379760|我决定在我的基本测试用例上创建以下函数：|4379761|/*
+*+@param+array+@array
+*
+*+@return+\Generator%7C[]
+*/
protected+function+arrayAsGenerator(array+$array)
{
++++foreach+($array+as+$item)+{
++++++++yield+$item;
++++}
}|code-block|syntax|javascript|4379762|这使我可以执行以下操作：|4379763|$mocked_instance+=+Phake::partialMock(MyInterface::class);

$numbers+=+[1,+2,+3,+4,+5];

Phake::when($mocked_instance)
++++->yieldData()
++++->thenReturn($this->arrayAsGenerator($numbers));|4379764|entityMap|0|LINK|mutability|MUTABLE|url|https://stackoverflow.com/users/197487/oliver-maksimovic^0|2|H|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|W|8|@]|9|@$A|X|B|Y|1|Z]]|C|$]]|$1|D|3|E|5|6|7|10|8|@]|9|@]|C|$]]|$1|F|3|G|5|H|7|11|8|@]|9|@]|C|$I|J]]|$1|K|3|L|5|6|7|12|8|@]|9|@]|C|$]]|$1|M|3|N|5|H|7|13|8|@]|9|@]|C|$I|J]]|$1|O|3|-4|5|6|7|14|8|@]|9|@]|C|$]]]|P|$Q|$5|R|S|T|C|$U|V]]]]

Thank you <a href="https://stackoverflow.com/users/197487/oliver-maksimovic">Oliver Maksimovic</a> for your comment, which has helped me in finding a solution that works for me.

I've decided to create the following function on my base testcase:

<pre><code>/*
 * @param array @array
 *
 * @return \Generator|[]
 */
protected function arrayAsGenerator(array $array)
{
 foreach ($array as $item) {
 yield $item;
 }
}
</code></pre>

This allows me to do the following:

<pre><code>$mocked_instance = Phake::partialMock(MyInterface::class);

$numbers = [1, 2, 3, 4, 5];

Phake::when($mocked_instance)
 -&gt;yieldData()
 -&gt;thenReturn($this-&gt;arrayAsGenerator($numbers));
</code></pre>

blocks|key|4380373|text|您可以使用带有first-class+support+for+generators的PHP库Phony|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|4380374|$handle+=+mock(MyInterface::class);
$handle->yieldData->generates([1,+2,+3,+4,+5])->returns();|code-block|syntax|javascript|4380375|entityMap|0|LINK|mutability|MUTABLE|url|http://eloquent-software.com/phony/latest/#stubbing-generators|1|http://eloquent-software.com/phony/^0|7|Y|0|1A|5|1|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@$A|T|B|U|1|V]|$A|W|B|X|1|Y]]|C|$]]|$1|D|3|E|5|F|7|Z|8|@]|9|@]|C|$G|H]]|$1|I|3|-4|5|6|7|10|8|@]|9|@]|C|$]]]|J|$K|$5|L|M|N|C|$O|P]]|Q|$5|L|M|N|C|$O|R]]]]

You could use <a href="http://eloquent-software.com/phony/" rel="nofollow noreferrer">Phony</a>, a PHP mocking library with <a href="http://eloquent-software.com/phony/latest/#stubbing-generators" rel="nofollow noreferrer">first-class support for generators</a>:

<pre><code>$handle = mock(MyInterface::class);
$handle-&gt;yieldData-&gt;generates([1, 2, 3, 4, 5])-&gt;returns();
</code></pre>

blocks|key|4379822|text|我只使用PHPUnit，不想添加Phake或其他测试框架。我发现这个问题最有用的解决方案来自这篇文章：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4379823|https://www.gpapadop.gr/blog/2017/11/01/mocking-generators-in-phpunit/|offset|length|4379824|但是，我不喜欢本文中的语法选择，我认为使用帮助器方法generate()更容易理解代码。在幕后，它仍然像文章中那样使用PHPUnit::returnCallback()。|style|CODE|4379825|下面是一个示例依赖类，其中包含我需要模拟的Generator方法：|4379826|class+MockedClass+
{
++++public+function+generatorFunc()+:+Generator
++++{
++++++++$values+=+[1,2,3,4];

++++++++foreach($values+as+$value)
++++++++{
++++++++++++yield+$value;
++++++++}
++++}
}|code-block|syntax|javascript|4379827|下面是一个带有generate()帮助器方法的PhpUnit测试类，它实现了上面文章中的解决方案：|4379828|class+ExampleTest+extends+\PHPUnit\Framework\TestCase
{
++++//+Helper+function+creates+a+nicer+interface+for+mocking+Generator+behavior
++++protected+function+generate(array+$yield_values)
++++{
++++++++return+$this->returnCallback(function()+use+($yield_values)+{
++++++++++++foreach+($yield_values+as+$value)+{
++++++++++++++++yield+$value;
++++++++++++}
++++++++});
++++}

++++public+function+testMockedGeneratorExample()+
++++{
++++++++$mockedObj+=+$this->createMock(MockedClass::class);

++++++++$mockedObj->expects($this->once())
++++++++++++->method('generatorFunc')
++++++++++++->will($this->generate([5,6,7,8]));

++++++++//+Run+code+that+uses+MockedClass+as+dependency
++++++++//+Make+additional+assertions+as+needed...
++++}
}|4379829|entityMap|0|LINK|mutability|MUTABLE|url^0|0|0|1Y|0|0|Q|A|1N|P|0|0|0|7|A|0|0^^$0|@$1|2|3|4|5|6|7|11|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|12|8|@]|9|@$D|13|E|14|1|15]]|A|$]]|$1|F|3|G|5|6|7|16|8|@$D|17|E|18|H|I]|$D|19|E|1A|H|I]]|9|@]|A|$]]|$1|J|3|K|5|6|7|1B|8|@]|9|@]|A|$]]|$1|L|3|M|5|N|7|1C|8|@]|9|@]|A|$O|P]]|$1|Q|3|R|5|6|7|1D|8|@$D|1E|E|1F|H|I]]|9|@]|A|$]]|$1|S|3|T|5|N|7|1G|8|@]|9|@]|A|$O|P]]|$1|U|3|-4|5|6|7|1H|8|@]|9|@]|A|$]]]|V|$W|$5|X|Y|Z|A|$10|C]]]]

I'm using PHPUnit only, and didn't want to mess with adding Phake or other testing frameworks. The most useful solution to this problem I found came from this article:

<a href="https://www.gpapadop.gr/blog/2017/11/01/mocking-generators-in-phpunit/" rel="nofollow noreferrer">https://www.gpapadop.gr/blog/2017/11/01/mocking-generators-in-phpunit/</a>

However, I don't like the choice of syntax in the article, and I think it's easier to understand the code with a helper method, <code>generate()</code>. Under the hood, it's still using the <code>PHPUnit::returnCallback()</code> like in the article.

Here's an example Dependency class with a Generator method I need to mock:

<pre><code>class MockedClass 
{
 public function generatorFunc() : Generator
 {
 $values = [1,2,3,4];

 foreach($values as $value)
 {
 yield $value;
 }
 }
}
</code></pre>

And here's a PhpUnit Test class with a <code>generate()</code> helper method that implements the solution in the article above:

<pre><code>class ExampleTest extends \PHPUnit\Framework\TestCase
{
 // Helper function creates a nicer interface for mocking Generator behavior
 protected function generate(array $yield_values)
 {
 return $this-&gt;returnCallback(function() use ($yield_values) {
 foreach ($yield_values as $value) {
 yield $value;
 }
 });
 }

 public function testMockedGeneratorExample() 
 {
 $mockedObj = $this-&gt;createMock(MockedClass::class);

 $mockedObj-&gt;expects($this-&gt;once())
 -&gt;method('generatorFunc')
 -&gt;will($this-&gt;generate([5,6,7,8]));

 // Run code that uses MockedClass as dependency
 // Make additional assertions as needed...
 }
}
</code></pre>

Lets say that I have the following interface:

<pre><code>interface MyInterface
{
 public function yieldData();
}
</code></pre>

I want to create a mock of this interface, for example like so:

<pre><code>$mocked_instance = Phake::partialMock(MyInterface::class);
</code></pre>

What is the most preferred way to mock the yield method? This is the best that I came up with:

<pre><code>Phake::when($mocked_instance)-&gt;yieldData()-&gt;thenReturn([]);
</code></pre>

Is there a way to do this in PHPUnit/Phake that more closely resembles the original functionality of the function (i.e. returning a Generator)?

Mocking a function that returns a Generator in PHP with PHPUnit/Phake

假设我有以下接口：interface MyInterface{    public function yieldData();}我想创建此接口的模拟，例如：$mocked_instance = Phake::partialMock(MyInterface::class);模拟What方法最受欢迎的方式是什么？这是我想出...

问用PHPUnit/Phake模拟PHP中返回生成器的函数
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