def test_intersec_segments(self):
'It test the segment intersection'
coord = CoordSystem(relations=[])
limits1 = [(0, 2)]
limits2 = [(2, 8)]
expected = [(0, 1), (2, 2), (3, 8)]
assert coord._intersec_segments(limits1, limits2) == expected
limits1 = [(1, 10)]
limits2 = [(5, 6)]
expected = [(1, 4), (5, 6), (7, 10)]
assert coord._intersec_segments(limits1, limits2) == expected
limits1 = [(1, 10)]
limits2 = [(1, 10)]
expected = [(1, 10)]
assert coord._intersec_segments(limits1, limits2) == expected
limits1 = [(1, 10)]
limits2 = [(2, 9)]
expected = [(1, 1), (2, 9), (10, 10)]
assert coord._intersec_segments(limits1, limits2) == expected
limits1 = [(4, 12)]
limits2 = [(6, 8)]
expected = [(4, 5), (6, 8), (9, 12)]
assert coord._intersec_segments(limits1, limits2) == expected
limits1 = [(4, 8)]
limits2 = [(6, 12)]
expected = [(4, 5), (6, 8), (9, 12)]
assert coord._intersec_segments(limits1, limits2) == expected
limits1 = [(0, 8)]
limits2 = [(0, 12)]
expected = [(0, 8), (9, 12)]
assert coord._intersec_segments(limits1, limits2) == expected
limits1 = [(0, 8)]
limits2 = [(2, 8)]
expected = [(0, 1), (2, 8)]
assert coord._intersec_segments(limits1, limits2) == expected
limits1 = [(0, 2)]
limits2 = [(3, 8)]
expected = [(0, 2), (3, 8)]
assert coord._intersec_segments(limits1, limits2) == expected
limits1 = [(0, 2)]
limits2 = [(4, 8)]
expected = [(0, 2), (4, 8)]
assert coord._intersec_segments(limits1, limits2) == expected
limits1 = [(0, 12)]
limits2 = [(2, 5), (8, 11)]
expected = [(0, 1), (2, 5), (6, 7), (8, 11), (12, 12)]
assert coord._intersec_segments(limits1, limits2) == expected
limits1 = [(12, 0)]
limits2 = [(12, 0)]
expected = [(12, 0)]
assert coord._intersec_segments(limits1, limits2) == expected
limits1 = [(12, 6), (5, 0)]
limits2 = [(13, 7)]
expected = [(13, 13), (12, 7), (6, 6), (5, 0)]
assert coord._intersec_segments(limits1, limits2) == expected
#cdna 876 543210
#prot 54 3210
limits1 = [(8, 6), (5, 0)]
limits2 = [(7, 2)]
expected = [(8, 8), (7, 6), (5, 2), (1, 0)]
assert coord._intersec_segments(limits1, limits2) == expected
