mockito-inline can't mock finals

Im trying to mock JsonObject using mockito-inline. When running from console it runs perfectly but when trying to use Android Studio i get

org.mockito.exceptions.base.MockitoException: 
Cannot mock/spy class com.google.gson.JsonObject
Mockito cannot mock/spy because :
 - final class

I tried using both @Mock JsonObject jsonObject and Mockito.mock(JsonObject.class) but none of them work. Am I missing something?

Versions:

• mockito-inline: 2.7.22 and 2.8.9
• junit: 4.12
• jdk: 1.8.0_92
• Gradle: 3.5
• Android Studio: 2.2.3 (Its a simple junit test but just in case)

Map<String, JsonElement> OUTER = new HashMap<>();
    Map<String, JsonElement> INNER = new HashMap<>();

    @Mock
    TypeAdapter<MockClass> adapter;
    @Mock
    TypeAdapter<JsonElement> elementTypeAdapter;
    @Mock
    JsonObject outer;
    @Mock
    JsonObject inner;

    @Before
    public void setUp(){
        MockitoAnnotations.initMocks(this);
        INNER.put("test1", new JsonPrimitive("test1"));
        INNER.put("test2", new JsonPrimitive("test2"));
        when(inner.entrySet()).thenReturn(INNER.entrySet());

        OUTER.put("test3", new JsonPrimitive("test3"));
        OUTER.put("test4", new JsonPrimitive("test4"));
        OUTER.put("inner", inner);
        when(outer.entrySet()).thenReturn(OUTER.entrySet());
    }

[martofeld]

@szczepiq Found a workaround, quiting and opening AS again somehow makes this work. Still haven’t found what causes this.

[ali-naser]

I’ve faced similar problem. I’ve added ‘mockito-inline’ dependency from https://mvnrepository.com/artifact/org.mockito/mockito-inline/3.8.0 and followed this https://www.baeldung.com/mockito-final. Then it works. Sample code:

   private JSONMap atonQueriesMap;

   @Before
   public void setup() {
   	atonQueriesMap = mock(JSONMap.class);
        when(atonQueriesMap.getString(any())).thenReturn(testQuery);
   }