def test_pre_compute():
s = symbol('s', 'var * {a: int, b: int}')
assert pre_compute(s, [(1, 2)]) == [(1, 2)]
assert list(pre_compute(s, iter([(1, 2)]))) == [(1, 2)]
assert list(pre_compute(s, iter([(1, 2), (3, 4)]))) == [(1, 2), (3, 4)]
assert list(pre_compute(s, iter([{'a': 1, 'b': 2},
{'a': 3, 'b': 4}]))) == [(1, 2), (3, 4)]
def test_pre_compute():
s = symbol('s', 'var * {a: int, b: int}')
assert pre_compute(s, [(1, 2)]) == [(1, 2)]
assert list(pre_compute(s, iter([(1, 2)]))) == [(1, 2)]
assert list(pre_compute(s, iter([(1, 2), (3, 4)]))) == [(1, 2), (3, 4)]
assert list(pre_compute(s, iter([{'a': 1, 'b': 2},
{'a': 3, 'b': 4}]))) == [(1, 2), (3, 4)]
def test_dicts():
t = symbol('t', 'var * {name: string, amount: int, id: int}')
L = [['Alice', 100, 1], ['Bob', 200, 2], ['Alice', 50, 3]]
d = [{
'name': 'Alice',
'amount': 100,
'id': 1
}, {
'name': 'Bob',
'amount': 200,
'id': 2
}, {
'name': 'Alice',
'amount': 50,
'id': 3
}]
assert list(pre_compute(t, d)) == list(map(tuple, L))
for expr in [t.amount, t.amount.sum(), by(t.name, sum=t.amount.sum())]:
assert eq(compute(expr, {t: L}), compute(expr, {t: d}))
for expr in [t.amount, t.amount.sum(), by(t.name, sum=t.amount.sum())]:
assert eq(compute(expr, {t: iter(L)}), compute(expr, {t: iter(d)}))
assert eq(compute(expr, {t: iter(L)}), compute(expr, {t: L}))
def dont_test_pre_compute():
b = bcolz.ctable(np.array([(1, 1., 10.), (2, 2., 20.), (3, 3., 30.)],
dtype=[('a', 'i8'), ('b', 'f8'), ('c', 'f8')]))
s = symbol('s', discover(b))
result = pre_compute(s[['a', 'b']], b)
assert result.names == ['a', 'b']
def dont_test_pre_compute():
b = bcolz.ctable(
np.array([(1, 1., 10.), (2, 2., 20.), (3, 3., 30.)],
dtype=[('a', 'i8'), ('b', 'f8'), ('c', 'f8')]))
s = symbol('s', discover(b))
result = pre_compute(s[['a', 'b']], b)
assert result.names == ['a', 'b']
def test_dicts():
t = symbol('t', 'var * {name: string, amount: int, id: int}')
L = [['Alice', 100, 1],
['Bob', 200, 2],
['Alice', 50, 3]]
d = [{'name': 'Alice', 'amount': 100, 'id': 1},
{'name': 'Bob', 'amount': 200, 'id': 2},
{'name': 'Alice', 'amount': 50, 'id': 3}]
assert list(pre_compute(t, d)) == list(map(tuple, L))
for expr in [t.amount, t.amount.sum(), by(t.name, sum=t.amount.sum())]:
assert eq(compute(expr, {t: L}),
compute(expr, {t: d}))
for expr in [t.amount, t.amount.sum(), by(t.name, sum=t.amount.sum())]:
assert eq(compute(expr, {t: iter(L)}),
compute(expr, {t: iter(d)}))
assert eq(compute(expr, {t: iter(L)}),
compute(expr, {t: L}))