def test_gap():
# Test when r2 is contained in r1
r = Region(1, 100, context=Context(100, True, start_index=1))
r2 = Region(10, 90, context=Context(100, True, start_index=1))
g = r.get_gap(r2)
assert g is None
# Test when r2 is contained in r1; test on end
r = Region(1, 100, context=Context(100, True, start_index=1))
r2 = Region(10, 100, context=Context(100, True, start_index=1))
g = r.get_gap(r2)
assert g is None
# Test when r2 is contained in r1; test on start
r = Region(1, 100, context=Context(100, True, start_index=1))
r2 = Region(1, 10, context=Context(100, True, start_index=1))
g = r.get_gap(r2)
assert g is None
r = Region(25, 90, context=Context(100, True, start_index=1))
r2 = Region(1, 10, context=Context(100, True, start_index=1))
# Test outer gap
g = r.get_gap(r2)
assert r.get_gap_span(r2) == g.length
assert r.get_gap_span(r2) == 10
# Test inner gap
g = r2.get_gap(r)
assert r2.get_gap_span(r) == g.length
assert g.length == 14
# Test overlap
r = Region(1, 10, context=Context(100, True, start_index=1))
r2 = Region(5, 15, context=Context(100, True, start_index=1))
g = r.get_gap(r2)
assert g is None
r = Region(1, 10, context=Context(100, True, start_index=1))
r2 = Region(10, 15, context=Context(100, True, start_index=1))
g = r.get_gap(r2)
assert g is None
def test_gap_span():
r = Region(1, 100, context=Context(100, True, start_index=1))
r2 = Region(10, 90, context=Context(100, True, start_index=1))
assert r.get_gap_span(r2) is None
r = Region(1, 10, context=Context(100, True, start_index=1))
r2 = Region(10, 90, context=Context(100, True, start_index=1))
assert r.get_gap_span(r2) == -1
r = Region(1, 10, context=Context(100, True, start_index=1))
r2 = Region(11, 90, context=Context(100, True, start_index=1))
assert r.get_gap_span(r2) == 0
r = Region(1, 10, context=Context(100, True, start_index=1))
r2 = Region(8, 90, context=Context(100, True, start_index=1))
assert r.get_gap_span(r2) == -3
r = Region(1, 10, context=Context(100, True, start_index=1))
r2 = Region(15, 90, context=Context(100, True, start_index=1))
assert r.get_gap_span(r2) == 4