def test_move_backward(self, m_pc):
"""Move an object backward if delta is negative."""
o1 = OrderingListMixin()
o2 = OrderingListMixin()
o3 = OrderingListMixin()
l = [o1, o2, o3]
m_pc.return_value = l
o3.move(-1)
assert l == [o1, o3, o2]
o2.move(-2)
assert l == [o2, o1, o3]
def test_move_last_forward(self, m_pc):
"""Don't move last object if attempting to move forward."""
o1 = OrderingListMixin()
o2 = OrderingListMixin()
o3 = OrderingListMixin()
l = [o1, o2, o3]
m_pc.return_value = l
o3.move(1)
assert l == [o1, o2, o3]
o3.move(42)
assert l == [o1, o2, o3]
def test_move_past_last(self, m_pc):
"""Move object to end position if it would otherwise go past."""
o1 = OrderingListMixin()
o2 = OrderingListMixin()
o3 = OrderingListMixin()
l = [o1, o2, o3]
m_pc.return_value = l
o1.move(3)
assert l == [o2, o3, o1]
o2.move(42)
assert l == [o3, o1, o2]
def test_move_forward(self, m_pc):
"""Move an object forward in its parent collection."""
o1 = OrderingListMixin()
o2 = OrderingListMixin()
o3 = OrderingListMixin()
l = [o1, o2, o3]
m_pc.return_value = l
o1.move(1)
assert l == [o2, o1, o3]
o2.move(2)
assert l == [o1, o3, o2]
def test_move_first_backward(self, m_pc):
"""Don't move object backward if it's first."""
o1 = OrderingListMixin()
o2 = OrderingListMixin()
o3 = OrderingListMixin()
l = [o1, o2, o3]
m_pc.return_value = l
o1.move(-1)
assert l == [o1, o2, o3]
o1.move(-42)
assert l == [o1, o2, o3]
def test_move_before_beginning(self, m_pc):
"""Move object to first position if delta would put it before."""
o1 = OrderingListMixin()
o2 = OrderingListMixin()
o3 = OrderingListMixin()
l = [o1, o2, o3]
m_pc.return_value = l
o3.move(-3)
assert l == [o3, o1, o2]
o2.move(-42)
assert l == [o2, o3, o1]