def test_type_hashable():
m = {dt.Type.int32: 'ok', dt.Type.str64: 'yep'}
assert dt.Type.int32 in m
assert dt.Type('int32') in m
assert dt.Type.str64 in m
assert dt.Type('str64') in m
assert dt.Type.int64 not in m
def test_empty_frame(st):
f0 = dt.Frame([[]], stype=st)
f1 = dt.Frame([None], stype=st)
frame_integrity_check(f0)
frame_integrity_check(f1)
assert f0.shape == (0, 1)
assert f1.shape == (1, 1)
assert f0.type == f1.type == dt.Type(st)
assert f0.countna1() == 0
assert f0.nunique1() == 0
assert f1.countna1() == 1
assert f1.nunique1() == 0
assert f1.mode1() is None
assert f1.nmodal1() == 0
def test_tonumpy_numerics(np, src_type):
DT = dt.Frame([-3, 3, 5, 0, 2], stype=src_type)
a = DT.to_numpy()
assert dt.Type(a.dtype) == DT.types[0]
assert a.shape == DT.shape
assert a.T.tolist() == DT.to_list()
def test_date32_type_from_pyarrow(pa):
assert dt.Type(pa.date32()) == dt.Type.date32
def test_date32_type_from_numpy(np):
assert dt.Type(np.dtype("datetime64[D]")) == dt.Type.date32
def test_date32_type_from_basic():
assert dt.Type("date") == dt.Type.date32
assert dt.Type("date32") == dt.Type.date32
assert dt.Type(datetime.date) == dt.Type.date32