Unit testing with mockito for constructors

Question

I have one class.

Class First {

    private Second second;

    public First(int num, String str) {
        second = new Second(str);
        this.num = num         


        

Answer 1

Mockito can now mock constructors (since version 3.5.0) https://javadoc.io/static/org.mockito/mockito-core/3.5.13/org/mockito/Mockito.html#mocked_construction

try (MockedConstruction mocked = mockConstruction(Foo.class)) {
   Foo foo = new Foo();
   when(foo.method()).thenReturn("bar");
   assertEquals("bar", foo.method());
   verify(foo).method();
 }