def test_center_distance_different_chroms():
x = Locus('1',1,100,strand='+')
# This needs to be 201 since x starts at 1
y = Locus('2',201,300,strand='+')
assert x.center_distance(y) == np.inf
def test_center_distance():
x = Locus('1',1,100,strand='+')
# This needs to be 201 since x starts at 1
y = Locus('1',201,300,strand='=')
assert x.center_distance(y) == 200
