Mock a specific constructor - mockito

Question

mockito-1.10.19
powermock-mockito-1.7.1
powermock-1.7.4
junit 4.12
I have a class that has multiple constructors (java). Once constructor calls the other. I want to mock only 1 of the constructors (the one that is called from the other). I cannot change the code unfortunately - I am just testing it. Here is the class to be tested:
import java.io.File;
import java.sql.connection;
public class Foo {
public Foo (Connection connection){
this(connection, new File ());
}
public Foo (Connection connection, File file){
// do stuff
}
// other methods
}
Here is the test class I have written:
import java.io.File;
import java.sql.connection;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.mockito.Mock;
import org.mockito.Matchers;
import org.mockito.Mockito;
import org.powermock.api.mockito.PowerMockito;
import org.powermock.core.classloader.annotations.PowerMockIgnore;
import org.powermock.core.classloader.annotations.PrepareForTest;
import org.powermock.modules.junit4.legacy.PowerMockRunner;
#RunWith(PowerMockRunner.class)
#PrepareForTest(Foo.class)
#PowerMockIgnore("javax.management.*")
public class FooTest {
#Test
public void testFoo() throws Exception {
Connection mockConnection = Mockito.mock(Connection.class);
Foo fooObj = Mockito.mock(Foo.class);
PowerMockito.whenNew(Foo.class).withArguments(Matchers.notNull(), Matchers.notNull()).thenReturn(fooObj);
Foo newFooObj = new Foo (mockConnection);
assertNotNull ("newFooObj should not be null", newFooObj);
}
}
The problem is that Foo(Connection) is not being entered. Is there something I am missing?

Answer 1

I tried your code with the latest 1.7.x version of Powermock (1.7.4) and it works as you wanted it to. So you might just need to upgrade a few minor versions.