Method visibility for testing partial mocks

Method visibility for testing partial mocks

I'm currently writing unit tests to test behavior of a method and would
like to partially mock the methods calling injected properties. For
example:
public void doSomething() {
int complicatedInt = 1 + 1;
if(getProperty().someBooleanReturn()) {
... etc. ...
}
}
So obviously I want to mock the getProperty() method in order to expect
the someBooleanReturn(). My question is, since I don't want the getter to
be visible to other classes, but visible to unit tests, I've currently
been making these methods package-private (default scope). Is there a
standard for these types of operations?
Thanks!