How to use the pdbpp.break_on_setattr function in pdbpp

def test_break_on_setattr_condition():
    def mycond(obj, value):
        return value == 42

    class Foo(object):
        pass
    # we don't use a class decorator to keep 2.5 compatibility
    Foo = pdbpp.break_on_setattr('x', condition=mycond, Pdb=PdbTest)(Foo)

    def fn():
        obj = Foo()
        obj.x = 0
        obj.x = 42
        return obj.x

    check(fn, """
[NUM] > .*fn()

def test_break_on_setattr_without_hidden_frames():

    class PdbWithConfig(PdbTest):
        def __init__(self, *args, **kwargs):
            class Config(ConfigTest):
                enable_hidden_frames = False

            super(PdbWithConfig, self).__init__(*args, Config=Config, **kwargs)

    class Foo(object):
        pass
    Foo = pdbpp.break_on_setattr('x', Pdb=PdbWithConfig)(Foo)

    def fn():
        obj = Foo()
        obj.x = 0
        return obj.x

    check(fn, """
[NUM] > .*fn()

def fn():
        a = Foo()
        b = Foo()

        def break_if_a(obj, value):
            return obj is a

        pdbpp.break_on_setattr("bar", condition=break_if_a, Pdb=PdbTest)(Foo)
        b.bar = 10
        a.bar = 42

def test_break_on_setattr():
    # we don't use a class decorator to keep 2.5 compatibility
    class Foo(object):
        pass
    Foo = pdbpp.break_on_setattr('x', Pdb=PdbTest)(Foo)

    def fn():
        obj = Foo()
        obj.x = 0
        return obj.x

    check(fn, """
[NUM] > .*fn()

def test_break_on_setattr_overridden():
    # we don't use a class decorator to keep 2.5 compatibility
    class Foo(object):
        def __setattr__(self, attr, value):
            object.__setattr__(self, attr, value+1)
    Foo = pdbpp.break_on_setattr('x', Pdb=PdbTest)(Foo)

    def fn():
        obj = Foo()
        obj.y = 41
        obj.x = 0
        return obj.x

    check(fn, """
[NUM] > .*fn()