ruby/red-arrow/test/test-struct-data-type.rb

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class StructDataTypeTest < Test::Unit::TestCase
  def setup
    @count_field = Arrow::Field.new("count", :uint32)
    @visible_field = Arrow::Field.new("visible", :boolean)
  end

  sub_test_case(".new") do
    test("[Arrow::Field]") do
      fields = [
        @count_field,
        @visible_field,
      ]
      assert_equal("struct<count: uint32, visible: bool>",
                   Arrow::StructDataType.new(fields).to_s)
    end

    test("[Hash]") do
      fields = [
        {name: "count", data_type: :uint32},
        {name: "visible", data_type: :boolean},
      ]
      assert_equal("struct<count: uint32, visible: bool>",
                   Arrow::StructDataType.new(fields).to_s)
    end

    test("[Arrow::Field, Hash]") do
      fields = [
        @count_field,
        {name: "visible", data_type: :boolean},
      ]
      assert_equal("struct<count: uint32, visible: bool>",
                   Arrow::StructDataType.new(fields).to_s)
    end

    test("{Arrow::DataType}") do
      fields = {
        "count" => Arrow::UInt32DataType.new,
        "visible" => Arrow::BooleanDataType.new,
      }
      assert_equal("struct<count: uint32, visible: bool>",
                   Arrow::StructDataType.new(fields).to_s)
    end

    test("{Hash}") do
      fields = {
        "count" => {type: :uint32},
        "visible" => {type: :boolean},
      }
      assert_equal("struct<count: uint32, visible: bool>",
                   Arrow::StructDataType.new(fields).to_s)
    end

    test("{String, Symbol}") do
      fields = {
        "count" => "uint32",
        "visible" => :boolean,
      }
      assert_equal("struct<count: uint32, visible: bool>",
                   Arrow::StructDataType.new(fields).to_s)
    end
  end

  sub_test_case("instance methods") do
    def setup
      super
      @data_type = Arrow::StructDataType.new([@count_field, @visible_field])
    end

    sub_test_case("#[]") do
      test("[String]") do
        assert_equal([@count_field, @visible_field],
                     [@data_type["count"], @data_type["visible"]])
      end

      test("[Symbol]") do
        assert_equal([@count_field, @visible_field],
                     [@data_type[:count], @data_type[:visible]])
      end

      test("[Integer]") do
        assert_equal([@count_field, @visible_field],
                     [@data_type[0], @data_type[1]])
      end

      test("[invalid]") do
        invalid = []
        message = "field name or index must be String, Symbol or Integer"
        message << ": <#{invalid.inspect}>"
        assert_raise(ArgumentError.new(message)) do
          @data_type[invalid]
        end
      end
    end
  end
end