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# 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 TestBufferInputStream < Test::Unit::TestCase
include Helper::Buildable
def test_read
buffer = Arrow::Buffer.new("Hello World")
buffer_input_stream = Arrow::BufferInputStream.new(buffer)
read_buffer = buffer_input_stream.read(5)
assert_equal("Hello", read_buffer.data.to_s)
end
def test_read_bytes
buffer = Arrow::Buffer.new("Hello World")
buffer_input_stream = Arrow::BufferInputStream.new(buffer)
read_bytes = buffer_input_stream.read_bytes(5)
assert_equal("Hello", read_bytes.to_s)
end
def test_read_at
buffer = Arrow::Buffer.new("Hello World")
buffer_input_stream = Arrow::BufferInputStream.new(buffer)
read_buffer = buffer_input_stream.read_at(6, 3)
assert_equal("Wor", read_buffer.data.to_s)
end
def test_read_at_bytes
buffer = Arrow::Buffer.new("Hello World")
buffer_input_stream = Arrow::BufferInputStream.new(buffer)
read_bytes = buffer_input_stream.read_at_bytes(6, 3)
assert_equal("Wor", read_bytes.to_s)
end
def test_advance
buffer = Arrow::Buffer.new("Hello World")
buffer_input_stream = Arrow::BufferInputStream.new(buffer)
buffer_input_stream.advance(6)
read_buffer = buffer_input_stream.read(5)
assert_equal("World", read_buffer.data.to_s)
end
def test_align
buffer = Arrow::Buffer.new("Hello World")
buffer_input_stream = Arrow::BufferInputStream.new(buffer)
buffer_input_stream.advance(3)
buffer_input_stream.align(8)
read_buffer = buffer_input_stream.read(3)
assert_equal("rld", read_buffer.data.to_s)
end
def test_peek
buffer = Arrow::Buffer.new("Hello World")
buffer_input_stream = Arrow::BufferInputStream.new(buffer)
peeked_data = buffer_input_stream.peek(5)
assert_equal(buffer_input_stream.read(5).data.to_s,
peeked_data.to_s)
end
def test_gio_input_stream
# U+3042 HIRAGANA LETTER A
data = "\u3042"
convert_encoding = "cp932"
buffer = Arrow::Buffer.new(data)
buffer_input_stream = Arrow::BufferInputStream.new(buffer)
converter = Gio::CharsetConverter.new(convert_encoding, "UTF-8")
convert_input_stream =
Gio::ConverterInputStream.new(buffer_input_stream, converter)
gio_input_stream = Arrow::GIOInputStream.new(convert_input_stream)
raw_read_data = gio_input_stream.read(10).data.to_s
assert_equal(data.encode(convert_encoding),
raw_read_data.dup.force_encoding(convert_encoding))
end
def test_read_record_batch
fields = [
Arrow::Field.new("visible", Arrow::BooleanDataType.new),
Arrow::Field.new("valid", Arrow::BooleanDataType.new),
]
schema = Arrow::Schema.new(fields)
columns = [
build_boolean_array([true]),
build_boolean_array([false]),
]
record_batch = Arrow::RecordBatch.new(schema, 1, columns)
buffer = Arrow::ResizableBuffer.new(0)
output_stream = Arrow::BufferOutputStream.new(buffer)
output_stream.write_record_batch(record_batch)
output_stream.close
input_stream = Arrow::BufferInputStream.new(buffer)
options = Arrow::ReadOptions.new
assert_equal(record_batch,
input_stream.read_record_batch(schema, options))
end
end
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