def test_separation_from_on_an_array_and_a_scalar():
p0 = ICRF(([1,0], [0,1], [0,0]))
p1 = ICRF((0, 0, 1))
sep = p0.separation_from(p1)
d = sep._degrees
assert len(d) == 2
assert d[0] == 90.0
assert d[1] == 90.0
# And the other way around:
sep = p1.separation_from(p0)
d = sep._degrees
assert len(d) == 2
assert d[0] == 90.0
assert d[1] == 90.0
def test_separation_from_on_two_array_values():
p0 = ICRF(([1,1], [0,0], [0,0]))
p1 = ICRF(([0,-1], [1,0], [0,0]))
sep = p0.separation_from(p1)
d = sep._degrees
assert len(d) == 2
assert d[0] == 90.0
assert d[1] == 180.0
def test_separation_from_on_scalar():
p0 = ICRF((1, 0, 0))
p1 = ICRF((0, 1, 0))
assert str(p0.separation_from(p1)) == '90deg 00\' 00.0"'