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
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
|
# 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.
class TestStreamDecoder < Test::Unit::TestCase
include Helper::Buildable
class Listener < Arrow::StreamListener
type_register
attr_reader :events
def initialize
super
@events = []
end
private
def virtual_do_on_eos
@events << [:eos]
true
end
def virtual_do_on_record_batch_decoded(record_batch, metadata)
@events << [:record_batch_decoded, record_batch, metadata]
true
end
def virtual_do_on_schema_decoded(schema, filtered_schema)
@events << [:schema_decoded, schema, filtered_schema]
true
end
end
def setup
columns = {
"enabled": build_boolean_array([true, false, nil, true]),
}
@record_batch = build_record_batch(columns)
@schema = @record_batch.schema
@buffer = Arrow::ResizableBuffer.new(0)
output = Arrow::BufferOutputStream.new(@buffer)
stream_writer = Arrow::RecordBatchStreamWriter.new(output, @schema)
stream_writer.write_record_batch(@record_batch)
stream_writer.close
output.close
@listener = Listener.new
@decoder = Arrow::StreamDecoder.new(@listener)
end
def test_listener
assert_equal(@listener, @decoder.listener)
end
def test_consume_bytes
@buffer.data.to_s.each_byte do |byte|
@decoder.consume_bytes(GLib::Bytes.new(byte.chr))
end
assert_equal([
[:schema_decoded, @schema, @schema],
[:record_batch_decoded, @record_batch, nil],
[:eos],
],
@listener.events)
end
def test_consume_buffer
# We need to keep data that aren't processed yet.
data = []
@buffer.data.to_s.each_byte do |byte|
data << byte.chr
can_clear = (@decoder.next_required_size == 1)
@decoder.consume_buffer(Arrow::Buffer.new(data.last))
# We can release a reference for kept data after they are
# processed.
data.clear if can_clear
end
assert_equal([
[:schema_decoded, @schema, @schema],
[:record_batch_decoded, @record_batch, nil],
[:eos],
],
@listener.events)
end
def test_reset
@decoder.consume_bytes(@buffer.data.to_s[0, 10])
@decoder.reset
@decoder.consume_bytes(@buffer.data)
assert_equal([
[:schema_decoded, @schema, @schema],
[:record_batch_decoded, @record_batch, nil],
[:eos],
],
@listener.events)
end
def test_schema
assert_nil(@decoder.schema)
@decoder.consume_bytes(@buffer.data)
assert_equal(@schema, @decoder.schema)
end
def test_next_required_size
data = @buffer.data.to_s
loop do
next_required_size = @decoder.next_required_size
break if next_required_size.zero?
@decoder.consume_bytes(data[0, next_required_size])
data = data[next_required_size..-1]
end
assert_equal([
[:schema_decoded, @schema, @schema],
[:record_batch_decoded, @record_batch, nil],
[:eos],
],
@listener.events)
end
end
|
