blocks|key|1893287|text|是的，您可以使用自定义参数匹配器。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1893288|有关更多详细信息，请参阅the+javadoc+of+Matchers，更具体地说，请参阅ArgumentMatcher。|offset|length|style|CODE|1893289|entityMap|0|LINK|mutability|MUTABLE|url|https://static.javadoc.io/org.mockito/mockito-core/latest/org/mockito/Matchers.html|1|https://static.javadoc.io/org.mockito/mockito-core/latest/org/mockito/ArgumentMatcher.html^0|0|R|8|19|F|C|N|0|19|F|1|0^^$0|@$1|2|3|4|5|6|7|R|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|S|8|@$D|T|E|U|F|G]|$D|V|E|W|F|G]]|9|@$D|X|E|Y|1|Z]|$D|10|E|11|1|12]]|A|$]]|$1|H|3|-4|5|6|7|13|8|@]|9|@]|A|$]]]|I|$J|$5|K|L|M|A|$N|O]]|P|$5|K|L|M|A|$N|Q]]]]

Yes you can, using a custom argument matcher.
See <a href="https://static.javadoc.io/org.mockito/mockito-core/latest/org/mockito/Matchers.html" rel="nofollow noreferrer">the javadoc of <code>Matchers</code></a> for more details, and more specifically <a href="https://static.javadoc.io/org.mockito/mockito-core/latest/org/mockito/ArgumentMatcher.html" rel="nofollow noreferrer"><code>ArgumentMatcher</code></a>.

blocks|key|1679643|text|这里有一种方法。它使用Answer对象来检查属性的值。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1679644|@RunWith(MockitoJUnitRunner.class)
public+class+MyTestClass+{
++++private+String+theProperty;
++++@Mock+private+MyClass+mockObject;

++++@Before
++++public+void+setUp()+{
++++++++when(mockObject.myMethod(anyString())).thenAnswer(
++++++++++++new+Answer<String>(){
++++++++++++@Override
++++++++++++public+String+answer(InvocationOnMock+invocation){
++++++++++++++++if+("value".equals(theProperty)){
++++++++++++++++++++return+"result";
++++++++++++++++}
++++++++++++++++else+if("otherValue".equals(theProperty))+{
++++++++++++++++++++return+"otherResult";
++++++++++++++++}
++++++++++++++++return+theProperty;
++++++++++++}});
++++}
}|code-block|syntax|javascript|1679645|还有另一种语法，实际上我更喜欢它，它可以实现完全相同的功能。你选哪一个由你决定。这只是setUp方法-测试类的其余部分应该与上面的相同。|1679646|@Before
public+void+setUp()+{
++++doAnswer(new+Answer<String>(){
++++++++@Override
++++++++public+String+answer(InvocationOnMock+invocation){
++++++++++++if+("value".equals(theProperty)){
++++++++++++++++return+"result";
++++++++++++}
++++++++++++else+if("otherValue".equals(theProperty))+{
++++++++++++++++return+"otherResult";
++++++++++++}
++++++++++++return+theProperty;
++++++++}}).when(mockObject).myMethod(anyString());
}|1679647|entityMap^0|B|6|0|0|17|5|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@$9|R|A|S|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|T|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|U|8|@$9|V|A|W|B|C]]|D|@]|E|$]]|$1|M|3|N|5|H|7|X|8|@]|D|@]|E|$I|J]]|$1|O|3|-4|5|6|7|Y|8|@]|D|@]|E|$]]]|P|$]]

Here's one way of doing it. This uses an <code>Answer</code> object to check the value of the property.

<pre><code>@RunWith(MockitoJUnitRunner.class)
public class MyTestClass {
 private String theProperty;
 @Mock private MyClass mockObject;

 @Before
 public void setUp() {
 when(mockObject.myMethod(anyString())).thenAnswer(
 new Answer&lt;String&gt;(){
 @Override
 public String answer(InvocationOnMock invocation){
 if ("value".equals(theProperty)){
 return "result";
 }
 else if("otherValue".equals(theProperty)) {
 return "otherResult";
 }
 return theProperty;
 }});
 }
}
</code></pre>

There's an alternative syntax, which I actually prefer, which will achieve exactly the same thing. Over to you which one of these you choose. This is just the <code>setUp</code> method - the rest of the test class should be the same as above.

<pre><code>@Before
public void setUp() {
 doAnswer(new Answer&lt;String&gt;(){
 @Override
 public String answer(InvocationOnMock invocation){
 if ("value".equals(theProperty)){
 return "result";
 }
 else if("otherValue".equals(theProperty)) {
 return "otherResult";
 }
 return theProperty;
 }}).when(mockObject).myMethod(anyString());
}
</code></pre>

blocks|key|1679761|text|在Java+8中，它甚至比上面的所有操作都更简单：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1679762|when(mockObject.myMethod(anyString()))
++++.thenAnswer(invocation+->+
++++++++invocation.getArgumentAt(0,+String.class));|code-block|syntax|javascript|1679763|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

In Java 8 it is even simpler than all of the above: 

<pre><code>when(mockObject.myMethod(anyString()))
 .thenAnswer(invocation -&gt; 
 invocation.getArgumentAt(0, String.class));
</code></pre>

blocks|key|1679930|text|下面是它在Kotlin和mockito-kotlin库中的样子。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1679931|mock<Resources>+{
++++on+{
++++++++mockObject.myMethod(any())
++++}+doAnswer+{
++++++++"Here+is+the+value:+${it.arguments[0]}"
++++}
}|code-block|syntax|javascript|1679932|entityMap|0|LINK|mutability|MUTABLE|url|https://github.com/nhaarman/mockito-kotlin/^0|C|E|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@$A|R|B|S|1|T]]|C|$]]|$1|D|3|E|5|F|7|U|8|@]|9|@]|C|$G|H]]|$1|I|3|-4|5|6|7|V|8|@]|9|@]|C|$]]]|J|$K|$5|L|M|N|C|$O|P]]]]

Here is how it would look like in Kotlin with <a href="https://github.com/nhaarman/mockito-kotlin/" rel="nofollow noreferrer">mockito-kotlin</a> library. 

<pre><code>mock&lt;Resources&gt; {
 on {
 mockObject.myMethod(any())
 } doAnswer {
 "Here is the value: ${it.arguments[0]}"
 }
}
</code></pre>

blocks|key|1679970|text|使用Mockito+3.6.0可以做到这一点：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1679971|when(mockObject.myMethod(anyString()))
++++.thenAnswer(invocation+->+myStringMethod(invocation.getArgument(0)));|code-block|syntax|javascript|1679972|这个答案是基于Sven's+answer和Martijn的评论，并将getArgumentAt()更改为getArgument()。|offset|length|style|CODE|1679973|entityMap|0|LINK|mutability|MUTABLE|url|https://stackoverflow.com/a/41328274/631051^0|0|0|Y|F|1G|D|7|D|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|V|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|W|8|@$I|X|J|Y|K|L]|$I|Z|J|10|K|L]]|9|@$I|11|J|12|1|13]]|A|$]]|$1|M|3|-4|5|6|7|14|8|@]|9|@]|A|$]]]|N|$O|$5|P|Q|R|A|$S|T]]]]

You can do this with Mockito 3.6.0:
<pre><code>when(mockObject.myMethod(anyString()))
 .thenAnswer(invocation -&gt; myStringMethod(invocation.getArgument(0)));
</code></pre>
This answer is based on <a href="https://stackoverflow.com/a/41328274/631051">Sven's answer</a> and Martijn Hiemstra's comment, with <code>getArgumentAt()</code> changed to <code>getArgument()</code>.

Normally when using mockito I will do something like

<pre><code>Mockito.when(myObject.myFunction(myParameter)).thenReturn(myResult);
</code></pre>

Is it possible to do something along the lines of

<pre><code>myParameter.setProperty("value");
Mockito.when(myObject.myFunction(myParameter)).thenReturn("myResult");

myParameter.setProperty("otherValue");
Mockito.when(myObject.myFunction(myParameter)).thenReturn("otherResult");
</code></pre>

So rather than when just using the parameter to determine the result. It is using a value of a property inside the parameter to determine the result.

so when the code is executed it behaves like so

<pre><code>public void myTestMethod(MyParameter myParameter,MyObject myObject){
 myParameter.setProperty("value");
 System.out.println(myObject.myFunction(myParameter));// outputs myResult

 myParameter.setProperty("otherValue");
 System.out.println(myObject.myFunction(myParameter));// outputs otherResult
}
</code></pre>

<hr>

current solution, hopefully something better can be suggested.

<pre><code>private class MyObjectMatcher extends ArgumentMatcher&lt;MyObject&gt; {

 private final String compareValue;

 public ApplicationContextMatcher(String compareValue) {
 this.compareValue= compareValue;
 }

 @Override
 public boolean matches(Object argument) {
 MyObject item= (MyObject) argument;
 if(compareValue!= null){
 if (item != null) {
 return compareValue.equals(item.getMyParameter());
 }
 }else {
 return item == null || item.getMyParameter() == null;
 }
 return false;
 }
}

public void initMock(MyObject myObject){
 MyObjectMatcher valueMatcher = new MyObjectMatcher("value");
 MyObjectMatcher otherValueMatcher = new MyObjectMatcher("otherValue");
 Mockito.when(myObject.myFunction(Matchers.argThat(valueMatcher))).thenReturn("myResult");
 Mockito.when(myObject.myFunction(Matchers.argThat(otherValueMatcher))).thenReturn("otherResult");
}
</code></pre>

mockito return value based on property of a parameter

Kotlin

Java

通常，在使用mockito时，我会这样做Mockito.when(myObject.myFunction(myParameter)).thenReturn(myResult);有没有可能做一些类似的事情myParameter.setProperty("value");Mockito.when(myObject.myFu...

问基于参数属性的mockito返回值
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