def test_Coding_no_utr_degenerate_return():
"""UTRs may be missing."""
crossmap = Coding([(10, 11)], (10, 11))
assert crossmap.coordinate_to_coding(8, True) == (-2, 0, -1, -2)
assert crossmap.coordinate_to_coding(9, True) == (-1, 0, -1, -1)
assert crossmap.coordinate_to_coding(11, True) == (1, 0, 1, 1)
assert crossmap.coordinate_to_coding(12, True) == (2, 0, 1, 2)
def test_Coding_inverted_degenerate_no_return():
"""Degenerate internal positions do not exist."""
crossmap = Coding([(10, 20), (30, 40)], (10, 40), True)
assert (crossmap.coordinate_to_coding(25) ==
crossmap.coordinate_to_coding(25, True))
def test_Coding_inverted_degenerate_return():
"""Degenerate upstream and downstream positions may be returned."""
crossmap = Coding([(10, 20)], (11, 19), True)
assert crossmap.coordinate_to_coding(20, True) == (-2, 0, -1, -1)
assert crossmap.coordinate_to_coding(9, True) == (2, 0, 1, 1)