def test_discover_dshape_symbol(ds):
t_ds = TableSymbol('t', dshape=ds)
assert t_ds.fields is not None
t_sch = TableSymbol('t', dshape=ds.subshape[0])
assert t_sch.fields is not None
assert t_ds.isidentical(t_sch)
def test_discover_dshape_symbol(ds):
t_ds = TableSymbol('t', dshape=ds)
assert t_ds.fields is not None
t_sch = TableSymbol('t', dshape=ds.subshape[0])
assert t_sch.fields is not None
assert t_ds.isidentical(t_sch)
def test_serializable():
t = TableSymbol('t', '{id: int, name: string, amount: int}')
import pickle
t2 = pickle.loads(pickle.dumps(t))
assert t.isidentical(t2)
s = TableSymbol('t', '{id: int, city: string}')
expr = join(t[t.amount < 0], s).sort('id').city.head()
expr2 = pickle.loads(pickle.dumps(expr))
assert expr.isidentical(expr2)
def test_serializable():
t = TableSymbol('t', '{id: int, name: string, amount: int}')
import pickle
t2 = pickle.loads(pickle.dumps(t))
assert t.isidentical(t2)
s = TableSymbol('t', '{id: int, city: string}')
expr = join(t[t.amount < 0], s).sort('id').city.head()
expr2 = pickle.loads(pickle.dumps(expr))
assert expr.isidentical(expr2)