Hey guys, I got a question regarding `Mockito+Kotl...

# test

[ch3d]

Hey guys, I got a question regarding Mockito+Kotlin.
I have a class with a property, something like:

internal val hasSomething = storage.contains(Consts.SOMETHING)

Then in test I want to mock it:

`when`(preferences.hasSomething).thenReturn(true)

But I got org.mockito.exceptions.misusing.MissingMethodInvocationException

org.mockito.exceptions.misusing.MissingMethodInvocationException: 
when() requires an argument which has to be 'a method call on a mock'.
For example:
    when(mock.getArticles()).thenReturn(articles);

Also, this error might show up because:
1. you stub either of: final/private/equals()/hashCode() methods.
   Those methods *cannot* be stubbed/verified.
   Mocking methods declared on non-public parent classes is not supported.
2. inside when() you don't call method on mock but on some other object.

But when I switch from property to a method:

internal fun hasSomething() = storage.contains(Consts.SOMETHING)

and then

`when`(preferences.hasSomething()).thenReturn(true)

Everything's okay

Bytecode with property:

// access flags 0x11
  public final getHasSomething$production_sources_for_module_testModule()Z
   L0
    LINENUMBER 14 L0
    ALOAD 0
    GETFIELD com/package/MyClass.hasSomething : Z
    IRETURN
   L1
    LOCALVARIABLE this Lcom/package/MyClass; L0 L1 0
    MAXSTACK = 1
    MAXLOCALS = 1

Bytecode with method:

// access flags 0x11
  public final hasMobileKey$production_sources_for_module_testModule()Z
   L0
    LINENUMBER 14 L0
    ALOAD 0
    GETFIELD com/package/Preferences.storage : Lcom/package/Storage;
    GETSTATIC com/package/Preferences.Companion : Lcom/package/Preferences$Companion;
    INVOKEVIRTUAL com/package/Preferences$Companion.getSOMETHING ()Ljava/lang/String;
    INVOKEINTERFACE com/package/Storage.contains (Ljava/lang/String;)Z
    IRETURN
   L1
    LOCALVARIABLE this Lcom/package/Preferences; L0 L1 0
    MAXSTACK = 2
    MAXLOCALS = 1

Could you help to figure our the reason?