Introduce argForWhich() as an alias for argThat()

Author: nhaarman

mockito-kotlin/src/main/kotlin/com/nhaarman/mockito_kotlin/Mockito.kt

@@ -43,6 +43,7 @@ inline fun <reified T : Any> any() = Mockito.any(T::class.java) ?: createInstanc
 inline fun <reified T : Any?> anyArray(): Array<T> = Mockito.any(Array<T>::class.java) ?: arrayOf()
 inline fun <reified T : Any> anyVararg(): T = Mockito.any<T>() ?: createInstance<T>()
 inline fun <reified T : Any> argThat(noinline predicate: T.() -> Boolean) = Mockito.argThat<T> { it -> (it as T).predicate() } ?: createInstance(T::class)
+inline fun <reified T : Any> argForWhich(noinline predicate: T.() -> Boolean) = argThat(predicate)
 
 fun atLeast(numInvocations: Int): VerificationMode = Mockito.atLeast(numInvocations)!!
 fun atLeastOnce(): VerificationMode = Mockito.atLeastOnce()!!

mockito-kotlin/src/test/kotlin/MockitoTest.kt

@@ -133,6 +133,15 @@ class MockitoTest {
             })
         }
     }
+    @Test
+    fun listArgForWhich() {
+        mock<Methods>().apply {
+            closedList(listOf(Closed(), Closed()))
+            verify(this).closedList(argForWhich {
+                size == 2
+            })
+        }
+    }
 
     @Test
     fun atLeastXInvocations() {