FilesExpand file tree

 main

/

test_substrait.py

Copy path

Blame

More file actions

Blame

More file actions

Latest commit

 

History

History

History

76 lines (57 loc) · 2.66 KB

 main

/

test_substrait.py

Copy path

Top

File metadata and controls

• Code
• Blame

76 lines (57 loc) · 2.66 KB

Raw

Copy raw file

Download raw file

Open symbols panel

Edit and raw actions

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

41

42

43

44

45

46

47

48

49

50

51

52

53

54

55

56

57

58

59

60

61

62

63

64

65

66

67

68

69

70

71

72

73

74

75

76

# Licensed to the Apache Software Foundation (ASF) under one

# or more contributor license agreements. See the NOTICE file

# distributed with this work for additional information

# regarding copyright ownership. The ASF licenses this file

# to you under the Apache License, Version 2.0 (the

# "License"); you may not use this file except in compliance

# with the License. You may obtain a copy of the License at

#

# http://www.apache.org/licenses/LICENSE-2.0

#

# Unless required by applicable law or agreed to in writing,

# software distributed under the License is distributed on an

# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY

# KIND, either express or implied. See the License for the

# specific language governing permissions and limitations

# under the License.

import pyarrow as pa

import pytest

from datafusion import SessionContext

from datafusion import substrait as ss

@pytest.fixture

def ctx():

return SessionContext()

def test_substrait_serialization(ctx):

batch = pa.RecordBatch.from_arrays(

[pa.array([1, 2, 3]), pa.array([4, 5, 6])],

names=["a", "b"],

)

ctx.register_record_batches("t", [[batch]])

assert ctx.catalog().database().names() == {"t"}

# For now just make sure the method calls blow up

substrait_plan = ss.Serde.serialize_to_plan("SELECT * FROM t", ctx)

substrait_bytes = substrait_plan.encode()

assert isinstance(substrait_bytes, bytes)

substrait_bytes = ss.Serde.serialize_bytes("SELECT * FROM t", ctx)

substrait_plan = ss.Serde.deserialize_bytes(substrait_bytes)

logical_plan = ss.Consumer.from_substrait_plan(ctx, substrait_plan)

# demonstrate how to create a DataFrame from a deserialized logical plan

df = ctx.create_dataframe_from_logical_plan(logical_plan)

substrait_plan = ss.Producer.to_substrait_plan(df.logical_plan(), ctx)

@pytest.mark.parametrize("path_to_str", (True, False))

def test_substrait_file_serialization(ctx, tmp_path, path_to_str):

batch = pa.RecordBatch.from_arrays(

[pa.array([1, 2, 3]), pa.array([4, 5, 6])],

names=["a", "b"],

)

ctx.register_record_batches("t", [[batch]])

assert ctx.catalog().database().names() == {"t"}

path = tmp_path / "substrait_plan"

path = str(path) if path_to_str else path

sql_command = "SELECT * FROM T"

ss.Serde.serialize(sql_command, ctx, path)

expected_plan = ss.Serde.serialize_to_plan(sql_command, ctx)

actual_plan = ss.Serde.deserialize(path)

expected_logical_plan = ss.Consumer.from_substrait_plan(ctx, expected_plan)

expected_actual_plan = ss.Consumer.from_substrait_plan(ctx, actual_plan)

assert str(expected_logical_plan) == str(expected_actual_plan)