def test_astype():
rn = Rn(3, weight=1.5)
cn = Cn(3, weight=1.5)
rn_s = Rn(3, weight=1.5, dtype='float32')
cn_s = Cn(3, weight=1.5, dtype='complex64')
# Real
assert rn.astype('float32') == rn_s
assert rn.astype('float64') is rn
assert rn._real_space is rn
assert rn.astype('complex64') == cn_s
assert rn.astype('complex128') == cn
assert rn._complex_space == cn
# Complex
assert cn.astype('complex64') == cn_s
assert cn.astype('complex128') is cn
assert cn._complex_space is cn
assert cn.astype('float32') == rn_s
assert cn.astype('float64') == rn
assert cn._complex_space is cn
