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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 TestStreamWriter < Test::Unit::TestCase
include Helper::Buildable
def test_write_record_batch
data = [true]
field = Arrow::Field.new("enabled", Arrow::BooleanDataType.new)
schema = Arrow::Schema.new([field])
tempfile = Tempfile.open("arrow-ipc-stream-writer")
output = Arrow::FileOutputStream.new(tempfile.path, false)
begin
stream_writer = Arrow::RecordBatchStreamWriter.new(output, schema)
begin
columns = [
build_boolean_array(data),
]
record_batch = Arrow::RecordBatch.new(schema, data.size, columns)
stream_writer.write_record_batch(record_batch)
ensure
stream_writer.close
end
ensure
output.close
end
input = Arrow::MemoryMappedInputStream.new(tempfile.path)
begin
stream_reader = Arrow::RecordBatchStreamReader.new(input)
assert_equal([field.name],
stream_reader.schema.fields.collect(&:name))
assert_equal(Arrow::RecordBatch.new(schema,
data.size,
[build_boolean_array(data)]),
stream_reader.read_next)
assert_nil(stream_reader.read_next)
ensure
input.close
end
end
end
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