def test_beam_io_runs():
cr = MEG_coreg("asdf", "fdsa", np.eye(4), np.eye(3))
b = Beam(np.array([5.0] * 3), np.random.randn(1000, 3), 200.0, np.arange(100), np.random.randn(1000), cr)
f = tempfile.mktemp(suffix=".npy")
try:
b.save(f)
b2 = Beam.load(f)
os.unlink(f)
assert True
except:
os.unlink(f)
assert False, "simple Beam I/O failed"
