@mock value isn't refelcted when on @InjectMocks

[Bara' Al-Jawarneh]

I'm new to Mockito and I was trying to write the unit test for nstead adapters

lets say we have

I have 3 classes and the last one will update a map to me, return it to the middle then return it again to final layer

List<Map<Integer, List<String>> x

Class A {

    Public void method1(List<Map<Integer, List<String>> x) {

                    method2(x)

    }

    private void method2 (List<Map<Integer, List<String>> x) {

                    x.add(...)

    }

}

Class B {

     A a;

    Public int methodB(List<Map<Integer, List<String>> x) {

                    a.method1(x)

                    return x.length;

    }

}

Class C {

     B b;

    Public void methodC(List<Map<Integer, List<String>> x) {

                    int size = b.methodB(x)

    }

}

Now when I wanted to write a unit test for class C, I did this

Public Class cTest {

List<Map<Integer, List<String>> x;

@InjectMocks

C c;

@Mock

B b;

@Test

Public Void test() {

   when(b.methodB(x)).thenReturn(1);

      c.methodC(x)

    }

}

The thing is when I debug the call for c.methodC(x) in unit test and I check the x it will always be empty
So how can I fill it in that case ?