Method AppendDouble

cpp/src/arrow/array/array_union_test.cc:560–564

  }

  void AppendDouble(double dbl) override {
    Base::AppendDouble(dbl);
    ASSERT_OK(i8_builder->AppendEmptyValue());
    ASSERT_OK(str_builder->AppendEmptyValue());
  }
};

TEST_F(DenseUnionBuilderTest, Basics) {