def test_unpacks_three_tracers_in_order_registered(self):
np.random.seed(0)
dims = ['tracer', '*']
register_tracer('tracer1', 'g/m^3')
register_tracer('tracer2', 'kg'),
register_tracer('tracer3', 'kg/m^3')
state = {
'tracer1': DataArray(np.random.randn(5), dims=['dim1'], attrs={'units': 'g/m^3'}),
'tracer2': DataArray(np.random.randn(5), dims=['dim1'], attrs={'units': 'kg'}),
'tracer3': DataArray(np.random.randn(5), dims=['dim1'], attrs={'units': 'kg/m^3'}),
}
packer = TracerPacker(self.component, dims)
packed = packer.pack(state)
unpacked = packer.unpack(packed, state)
assert isinstance(unpacked, dict)
assert len(unpacked) == 3
assert np.all(unpacked['tracer1'] == state['tracer1'])
assert np.all(unpacked['tracer2'] == state['tracer2'])
assert np.all(unpacked['tracer3'] == state['tracer3'])
def test_unpacks_no_tracers(self):
dims = ['tracer', '*']
packer = TracerPacker(self.component, dims)
unpacked = packer.unpack({}, {})
assert isinstance(unpacked, dict)
assert len(unpacked) == 0
