c_glib/test/test-column.rb

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#
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class TestColumn < Test::Unit::TestCase
  include Helper::Buildable

  sub_test_case(".new") do
    def test_array
      field = Arrow::Field.new("enabled", Arrow::BooleanDataType.new)
      array = build_boolean_array([true])
      column = Arrow::Column.new(field, array)
      assert_equal(1, column.length)
    end

    def test_chunked_array
      field = Arrow::Field.new("enabled", Arrow::BooleanDataType.new)
      chunks = [
        build_boolean_array([true]),
        build_boolean_array([false, true]),
      ]
      chunked_array = Arrow::ChunkedArray.new(chunks)
      column = Arrow::Column.new(field, chunked_array)
      assert_equal(3, column.length)
    end
  end

  def test_equal
    field1 = Arrow::Field.new("enabled", Arrow::BooleanDataType.new)
    array1 = build_boolean_array([true, false])
    field2 = Arrow::Field.new("enabled", Arrow::BooleanDataType.new)
    chunks = [
      build_boolean_array([true]),
      build_boolean_array([false]),
    ]
    array2 = Arrow::ChunkedArray.new(chunks)
    assert_equal(Arrow::Column.new(field1, array1),
                 Arrow::Column.new(field2, array2))
  end

  def test_length
    field = Arrow::Field.new("enabled", Arrow::BooleanDataType.new)
    array = build_boolean_array([true, false])
    column = Arrow::Column.new(field, array)
    assert_equal(2, column.length)
  end

  def test_n_nulls
    field = Arrow::Field.new("enabled", Arrow::BooleanDataType.new)
    array = build_boolean_array([true, nil, nil])
    column = Arrow::Column.new(field, array)
    assert_equal(2, column.n_nulls)
  end

  def test_field
    field = Arrow::Field.new("enabled", Arrow::BooleanDataType.new)
    array = build_boolean_array([true])
    column = Arrow::Column.new(field, array)
    assert_equal("enabled", column.field.name)
  end

  def test_name
    field = Arrow::Field.new("enabled", Arrow::BooleanDataType.new)
    array = build_boolean_array([true])
    column = Arrow::Column.new(field, array)
    assert_equal("enabled", column.name)
  end

  def test_data_type
    field = Arrow::Field.new("enabled", Arrow::BooleanDataType.new)
    array = build_boolean_array([true])
    column = Arrow::Column.new(field, array)
    assert_equal("bool", column.data_type.to_s)
  end

  def test_data
    field = Arrow::Field.new("enabled", Arrow::BooleanDataType.new)
    chunks = [
      build_boolean_array([true]),
      build_boolean_array([false, true]),
    ]
    chunked_array = Arrow::ChunkedArray.new(chunks)
    column = Arrow::Column.new(field, chunked_array)
    assert_equal(3, column.data.length)
  end

  def test_slice
    field = Arrow::Field.new("enabled", Arrow::BooleanDataType.new)
    chunks1 = [
      build_boolean_array([true, false, true]),
      build_boolean_array([false, true]),
    ]
    chunks2 = [
      build_boolean_array([false, true]),
      build_boolean_array([false]),
    ]
    chunked_array = Arrow::ChunkedArray.new(chunks1)
    column = Arrow::Column.new(field, chunked_array)
    sub_column = column.slice(1, 3)
    assert_equal(chunks2, sub_column.data.chunks)
  end
end