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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 TestDatasetScannerBuilder < Test::Unit::TestCase
include Helper::Buildable
include Helper::Writable
def setup
omit("Arrow Dataset is required") unless defined?(ArrowDataset)
Dir.mktmpdir do |tmpdir|
path = File.join(tmpdir, "table.arrow")
@table = build_table(visible: [
build_boolean_array([true, false, true]),
build_boolean_array([false, true, false, true]),
],
point: [
build_int32_array([1, 2, 3]),
build_int32_array([-1, -2, -3, -4]),
])
@format = ArrowDataset::IPCFileFormat.new
write_table(@table, path)
factory = ArrowDataset::FileSystemDatasetFactory.new(@format)
factory.file_system_uri = build_file_uri(path)
@dataset = factory.finish
@builder = @dataset.begin_scan
yield
end
end
def test_new_record_batch_reader
reader = Arrow::TableBatchReader.new(@table)
builder = ArrowDataset::ScannerBuilder.new(reader)
scanner = builder.finish
assert_equal(@table, scanner.to_table)
end
def test_filter
visible = Arrow::FieldExpression.new("visible")
true_scalar = Arrow::BooleanScalar.new(true)
true_datum = Arrow::ScalarDatum.new(true_scalar)
true_literal = Arrow::LiteralExpression.new(true_datum)
filter = Arrow::CallExpression.new("equal", [visible, true_literal])
@builder.filter = filter
scanner = @builder.finish
assert_equal(build_table(visible: [
build_boolean_array([true, true]),
build_boolean_array([true, true]),
],
point: [
build_int32_array([1, 3]),
build_int32_array([-2, -4]),
]),
scanner.to_table)
end
def test_use_async
@builder.use_async = true
scanner = @builder.finish
assert_equal(@table, scanner.to_table)
end
end
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