ceph/src/arrow/c_glib/test/test-buffer-output-stream.rb

   1 # Licensed to the Apache Software Foundation (ASF) under one
   2 # or more contributor license agreements.  See the NOTICE file
   3 # distributed with this work for additional information
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   5 # to you under the Apache License, Version 2.0 (the
   6 # "License"); you may not use this file except in compliance
   7 # with the License.  You may obtain a copy of the License at
   8 #
   9 #   http://www.apache.org/licenses/LICENSE-2.0
  10 #
  11 # Unless required by applicable law or agreed to in writing,
  12 # software distributed under the License is distributed on an
  13 # "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
  14 # KIND, either express or implied.  See the License for the
  15 # specific language governing permissions and limitations
  16 # under the License.
  17
  18 class TestBufferOutputStream < Test::Unit::TestCase
  19   include Helper::Buildable
  20
  21   def test_new
  22     buffer = Arrow::ResizableBuffer.new(0)
  23     output_stream = Arrow::BufferOutputStream.new(buffer)
  24     output_stream.write("Hello")
  25     output_stream.close
  26     assert_equal("Hello", buffer.data.to_s)
  27   end
  28
  29   def test_align
  30     buffer = Arrow::ResizableBuffer.new(0)
  31     output_stream = Arrow::BufferOutputStream.new(buffer)
  32     output_stream.write("Hello")
  33     output_stream.align(8)
  34     output_stream.close
  35     assert_equal("Hello\x00\x00\x00", buffer.data.to_s)
  36   end
  37
  38   def test_write_record_batch
  39     fields = [
  40       Arrow::Field.new("visible", Arrow::BooleanDataType.new),
  41       Arrow::Field.new("valid", Arrow::BooleanDataType.new),
  42     ]
  43     schema = Arrow::Schema.new(fields)
  44     columns = [
  45       build_boolean_array([true]),
  46       build_boolean_array([false]),
  47     ]
  48     record_batch = Arrow::RecordBatch.new(schema, 1, columns)
  49
  50     buffer = Arrow::ResizableBuffer.new(0)
  51     options = Arrow::WriteOptions.new
  52     output_stream = Arrow::BufferOutputStream.new(buffer)
  53     output_stream.write_record_batch(record_batch, options)
  54     output_stream.close
  55
  56     input_stream = Arrow::BufferInputStream.new(buffer)
  57     assert_equal(record_batch,
  58                  input_stream.read_record_batch(schema))
  59   end
  60 end