Function TestDecimalBasic

cpp/src/arrow/json/from_string_test.cc:568–598

template <typename DecimalValue, typename DecimalBuilder>
void TestDecimalBasic(std::shared_ptr<DataType> type) {
  std::shared_ptr<Array> expected, actual;

  ASSERT_OK_AND_ASSIGN(actual, ArrayFromJSONString(type, "[]"));
  ASSERT_OK(actual->ValidateFull());
  {
    DecimalBuilder builder(type);
    ASSERT_OK(builder.Finish(&expected));
  }
  AssertArraysEqual(*expected, *actual);

  ASSERT_OK_AND_ASSIGN(actual, ArrayFromJSONString(type, "[\"123.4567\", \"-78.9000\"]"));
  ASSERT_OK(actual->ValidateFull());
  {
    DecimalBuilder builder(type);
    ASSERT_OK(builder.Append(DecimalValue(1234567)));
    ASSERT_OK(builder.Append(DecimalValue(-789000)));
    ASSERT_OK(builder.Finish(&expected));
  }
  AssertArraysEqual(*expected, *actual);

  ASSERT_OK_AND_ASSIGN(actual, ArrayFromJSONString(type, "[\"123.4567\", null]"));
  ASSERT_OK(actual->ValidateFull());
  {
    DecimalBuilder builder(type);
    ASSERT_OK(builder.Append(DecimalValue(1234567)));
    ASSERT_OK(builder.AppendNull());
    ASSERT_OK(builder.Finish(&expected));
  }
  AssertArraysEqual(*expected, *actual);
}

TEST(TestDecimal32FromString, Basics) {
  TestDecimalBasic<Decimal32, Decimal32Builder>(decimal32(8, 4));