#350 Fix Refelction utils for java 13+ (#356)

* getField for java 12+

* Fix for java 13+, avoid type conversion error

* Fix the right method

* undo allchanges

* undo allchanges

* remove unused import

* sync upstream and apply changes

Co-authored-by: Alberto Lago <[email protected]>

[skip ci]

Author: trompa

common/src/main/scala/org/mockito/MockitoAPI.scala

@@ -28,12 +28,9 @@ import org.mockito.stubbing._
 import org.mockito.verification.{ VerificationAfterDelay, VerificationMode, VerificationWithTimeout }
 import org.scalactic.{ Equality, Prettifier }
 
-import java.lang.reflect.Field
 import scala.collection.JavaConverters._
 import scala.reflect.ClassTag
 import scala.reflect.runtime.universe.WeakTypeTag
-import scala.util.{ Failure, Success, Try }
-import scala.util.control.Breaks.break
 
 private[mockito] trait ScalacticSerialisableHack {
   //Hack until Equality can be made serialisable
@@ -633,24 +630,7 @@ private[mockito] trait MockitoEnhancer extends MockCreator {
   def withObjectMocked[O <: AnyRef: ClassTag](block: => Any)(implicit defaultAnswer: DefaultAnswer, $pt: Prettifier): Unit = {
     val objectClass = clazz[O]
     objectClass.synchronized {
-      val moduleField: Field = Try(objectClass.getDeclaredField("MODULE$")) match {
-        case Success(module) => module
-        case Failure(e) =>
-          Try {
-            val getDeclaredFields0           = objectClass.getDeclaredMethod("getDeclaredFields0", classOf[Boolean])
-            val accessibleBeforeSet: Boolean = getDeclaredFields0.isAccessible
-            getDeclaredFields0.setAccessible(true)
-            val declaredFields: Array[Field] = getDeclaredFields0.invoke(classOf[Field], () => false).asInstanceOf[Array[Field]]
-            getDeclaredFields0.setAccessible(accessibleBeforeSet)
-            declaredFields.find("MODULE$" == _.getName).get
-          } match {
-            case Success(module) => module
-            case Failure(ex) =>
-              e.addSuppressed(ex)
-              throw e
-          }
-      }
-
+      val moduleField = objectClass.getDeclaredField("MODULE$")
       val realImpl: O = moduleField.get(null).asInstanceOf[O]
 
       val threadAwareMock = createMock(

common/src/main/scala/org/mockito/ReflectionUtils.scala

@@ -9,6 +9,7 @@ import ru.vyarus.java.generics.resolver.GenericsResolver
 
 import scala.reflect.ClassTag
 import scala.reflect.internal.Symbols
+import scala.util.{ Failure, Success, Try => uTry }
 import scala.util.control.NonFatal
 
 object ReflectionUtils {
@@ -124,10 +125,30 @@ object ReflectionUtils {
     }
 
   def setFinalStatic(field: Field, newValue: Any): Unit = {
+    val clazz = classOf[java.lang.Class[_]]
     field.setAccessible(true)
-    val modifiersField = classOf[Field].getDeclaredField("modifiers")
+    val modifiersField: Field = uTry(clazz.getDeclaredField("modifiers")) match {
+      case Success(modifiers) => modifiers
+      case Failure(e) =>
+        uTry {
+          val getDeclaredFields0           = clazz.getDeclaredMethod("getDeclaredFields0", classOf[Boolean])
+          val accessibleBeforeSet: Boolean = getDeclaredFields0.isAccessible
+          getDeclaredFields0.setAccessible(true)
+          val declaredFields: Array[Field] = getDeclaredFields0
+            .invoke(classOf[Field], java.lang.Boolean.FALSE)
+            .asInstanceOf[Array[Field]]
+          getDeclaredFields0.setAccessible(accessibleBeforeSet)
+          declaredFields.find("modifiers" == _.getName).get
+        } match {
+          case Success(modifiers) => modifiers
+          case Failure(ex) =>
+            e.addSuppressed(ex)
+            throw e
+        }
+    }
     modifiersField.setAccessible(true)
     modifiersField.setInt(field, field.getModifiers & ~Modifier.FINAL)
     field.set(null, newValue)
   }
+
 }