c_glib/test/test-schema.rb

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class TestSchema < Test::Unit::TestCase
  def test_equal
    fields1 = [
      Arrow::Field.new("enabled", Arrow::BooleanDataType.new),
    ]
    fields2 = [
      Arrow::Field.new("enabled", Arrow::BooleanDataType.new),
    ]
    assert_equal(Arrow::Schema.new(fields1),
                 Arrow::Schema.new(fields2))
  end

  def test_field
    field = Arrow::Field.new("enabled", Arrow::BooleanDataType.new)
    schema = Arrow::Schema.new([field])
    assert_equal("enabled", schema.get_field(0).name)
  end

  sub_test_case("#get_field_by_name") do
    def test_found
      field = Arrow::Field.new("enabled", Arrow::BooleanDataType.new)
      schema = Arrow::Schema.new([field])
      assert_equal("enabled", schema.get_field_by_name("enabled").name)
    end

    def test_not_found
      field = Arrow::Field.new("enabled", Arrow::BooleanDataType.new)
      schema = Arrow::Schema.new([field])
      assert_nil(schema.get_field_by_name("nonexistent"))
    end
  end

  def test_n_fields
    fields = [
      Arrow::Field.new("enabled", Arrow::BooleanDataType.new),
      Arrow::Field.new("required", Arrow::BooleanDataType.new),
    ]
    schema = Arrow::Schema.new(fields)
    assert_equal(2, schema.n_fields)
  end

  def test_fields
    fields = [
      Arrow::Field.new("enabled", Arrow::BooleanDataType.new),
      Arrow::Field.new("required", Arrow::BooleanDataType.new),
    ]
    schema = Arrow::Schema.new(fields)
    assert_equal(["enabled", "required"],
                 schema.fields.collect(&:name))
  end

  def test_to_s
    fields = [
      Arrow::Field.new("enabled", Arrow::BooleanDataType.new),
      Arrow::Field.new("required", Arrow::BooleanDataType.new),
    ]
    schema = Arrow::Schema.new(fields)
    assert_equal(<<-SCHEMA.chomp, schema.to_s)
enabled: bool
required: bool
    SCHEMA
  end

  def test_add_field
    fields = [
      Arrow::Field.new("enabled", Arrow::BooleanDataType.new),
      Arrow::Field.new("required", Arrow::BooleanDataType.new)
    ]
    schema = Arrow::Schema.new(fields)
    new_field = Arrow::Field.new("new", Arrow::BooleanDataType.new)
    new_schema = schema.add_field(1, new_field)
    assert_equal(<<-SCHEMA.chomp, new_schema.to_s)
enabled: bool
new: bool
required: bool
    SCHEMA
  end

  def test_remove_field
    fields = [
      Arrow::Field.new("enabled", Arrow::BooleanDataType.new),
      Arrow::Field.new("required", Arrow::BooleanDataType.new)
    ]
    schema = Arrow::Schema.new(fields)
    new_schema = schema.remove_field(0)
    assert_equal(<<-SCHEMA.chomp, new_schema.to_s)
required: bool
    SCHEMA
  end

  def test_replace_field
    fields = [
      Arrow::Field.new("enabled", Arrow::BooleanDataType.new),
      Arrow::Field.new("required", Arrow::BooleanDataType.new)
    ]
    schema = Arrow::Schema.new(fields)
    new_field = Arrow::Field.new("new", Arrow::BooleanDataType.new)
    new_schema = schema.replace_field(1, new_field)
    assert_equal(<<-SCHEMA.chomp, new_schema.to_s)
enabled: bool
new: bool
    SCHEMA
  end
end