def test_row1():
# test row getter/setter
data = create_test_data()
f = FrameRef(Frame(data))
# getter
# test non-duplicate keys
rowid = Index(F.tensor([0, 2]))
rows = f[rowid]
for k, v in rows.items():
assert tuple(F.shape(v)) == (len(rowid), D)
assert F.allclose(v, F.gather_row(data[k], F.tensor(rowid.tousertensor())))
# test duplicate keys
rowid = Index(F.tensor([8, 2, 2, 1]))
rows = f[rowid]
for k, v in rows.items():
assert tuple(F.shape(v)) == (len(rowid), D)
assert F.allclose(v, F.gather_row(data[k], F.tensor(rowid.tousertensor())))
# setter
rowid = Index(F.tensor([0, 2, 4]))
vals = {'a1' : F.zeros((len(rowid), D)),
'a2' : F.zeros((len(rowid), D)),
'a3' : F.zeros((len(rowid), D)),
}
f[rowid] = vals
for k, v in f[rowid].items():
assert F.allclose(v, F.zeros((len(rowid), D)))
# setting rows with new column should raise error with error initializer
f.set_initializer(lambda shape, dtype : assert_(False))
def failed_update_rows():
vals['a4'] = F.ones((len(rowid), D))
f[rowid] = vals
assert check_fail(failed_update_rows)
def test_column2():
# Test frameref column getter/setter
data = Frame(create_test_data())
f = FrameRef(data, toindex([3, 4, 5, 6, 7]))
assert f.num_rows == 5
assert len(f) == 3
assert F.allclose(f['a1'], F.narrow_row(data['a1'].data, 3, 8))
# set column should reflect on the referenced data
f['a1'] = F.zeros([5, D])
assert F.allclose(F.narrow_row(data['a1'].data, 3, 8), F.zeros([5, D]))
# add new partial column should fail with error initializer
f.set_initializer(lambda shape, dtype : assert_(False))
def failed_add_col():
f['a4'] = F.ones([5, D])
assert check_fail(failed_add_col)