c++/test/TestDecimal.cc

/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#include "orc/Common.hh"

#include "wrap/gtest-wrapper.h"
#include "OrcTest.hh"

#include <iostream>

namespace orc {

  TEST(Decimal, testDecimalComparison) {
    // same scales
    EXPECT_TRUE(compare(Decimal(Int128(99), 0), Decimal(Int128(100), 0)));
    EXPECT_TRUE(compare(Decimal(Int128(34543), 5), Decimal(Int128(4324324), 5)));
    EXPECT_TRUE(compare(Decimal(Int128(345345435432l), 15),
                        Decimal(Int128(345344425435432l), 15)));
    EXPECT_TRUE(compare(Decimal(Int128(5), 20), Decimal(Int128(50), 20)));

    // different scales
    EXPECT_TRUE(compare(Decimal(Int128(10000), 4), Decimal(Int128(10000), 3)));
    EXPECT_FALSE(compare(Decimal(Int128(1111), 3), Decimal(Int128(111), 2)));
    EXPECT_TRUE(compare(Decimal(Int128(999999), 5), Decimal(Int128(9999999), 5)));
    EXPECT_FALSE(compare(Decimal(Int128(99), 0), Decimal(Int128(100), 1)));

    // same integral parts
    EXPECT_TRUE(compare(Decimal(Int128(99999), 0), Decimal(Int128(999999), 1)));
    EXPECT_TRUE(
      compare(Decimal(Int128(12345123), 3), Decimal(Int128(1234553432), 5)));

    // equal numbers
    EXPECT_FALSE(compare(Decimal(Int128(100000), 3), Decimal(Int128(100), 0)));
    EXPECT_FALSE(compare(Decimal(Int128(100), 0), Decimal(Int128(100000), 3)));
    EXPECT_FALSE(compare(Decimal(Int128(100000), 3), Decimal(Int128(100000), 3)));
    EXPECT_FALSE(compare(Decimal(Int128(100000), 3), Decimal(Int128(100000), 3)));
    EXPECT_FALSE(compare(Decimal(Int128(1), 10), Decimal(Int128(10), 11)));
    EXPECT_FALSE(compare(Decimal(Int128(10), 11), Decimal(Int128(1), 10)));

    // large scales (>18)
    EXPECT_TRUE(compare(Decimal(Int128(99), 35), Decimal(Int128(100), 35)));
    EXPECT_TRUE(
      compare(Decimal(Int128("12345678999999999999999999999999999998"), 29),
              Decimal(Int128("123456789999999999999999999999999999999"), 30)));
    EXPECT_FALSE(
      compare(Decimal(Int128("123456789999999999999999999999999999900"), 30),
              Decimal(Int128("12345678999999999999999999999999999990"), 29)));
    EXPECT_FALSE(
      compare(Decimal(Int128("12345678999999999999999999999999999990"), 29),
              Decimal(Int128("123456789999999999999999999999999999900"), 30)));

    // fractional overflow
    EXPECT_TRUE(compare(Decimal(Int128::maximumValue(), 39),
                        Decimal(
                          Int128("99999999999999999999999999999999999999"), 38)));

    // negative numbers
    EXPECT_TRUE(compare(Decimal(Int128(-99), 0), Decimal(Int128(100), 0)));
    EXPECT_TRUE(
      compare(Decimal(Int128(-4324324), 5), Decimal(Int128(-34543), 5)));
    EXPECT_TRUE(compare(Decimal(Int128(-345344425435432l), 15),
                        Decimal(Int128(-345345435432l), 15)));
    EXPECT_TRUE(compare(Decimal(Int128(-50), 20), Decimal(Int128(-5), 20)));
    EXPECT_TRUE(compare(Decimal(Int128(-10000), 3), Decimal(Int128(-10000), 4)));
    EXPECT_TRUE(compare(Decimal(Int128(-1111), 3), Decimal(Int128(-111), 2)));
    EXPECT_TRUE(
      compare(Decimal(Int128(-9999999), 5), Decimal(Int128(-999999), 5)));
    EXPECT_TRUE(compare(Decimal(Int128(-99), 0), Decimal(Int128(-100), 1)));
    EXPECT_TRUE(compare(Decimal(Int128(-999999), 1), Decimal(Int128(-99999), 0)));
    EXPECT_TRUE(
      compare(Decimal(Int128(-1234553432), 5), Decimal(Int128(-12345123), 3)));
    EXPECT_FALSE(compare(Decimal(Int128(-100000), 3), Decimal(Int128(-100), 0)));
    EXPECT_FALSE(compare(Decimal(Int128(-100), 0), Decimal(Int128(-100000), 3)));
    EXPECT_FALSE(
      compare(Decimal(Int128(-100000), 3), Decimal(Int128(-100000), 3)));
    EXPECT_FALSE(
      compare(Decimal(Int128(-100000), 3), Decimal(Int128(-100000), 3)));
    EXPECT_FALSE(compare(Decimal(Int128(-1), 10), Decimal(Int128(-10), 11)));
    EXPECT_FALSE(compare(Decimal(Int128(-10), 11), Decimal(Int128(-1), 10)));
    EXPECT_TRUE(compare(Decimal(Int128(-100), 35), Decimal(Int128(-99), 35)));
    EXPECT_TRUE(
      compare(Decimal(Int128("-123456789999999999999999999999999999999"), 30),
              Decimal(Int128("-12345678999999999999999999999999999998"), 29)));
    EXPECT_FALSE(
      compare(Decimal(Int128("-123456789999999999999999999999999999900"), 30),
              Decimal(Int128("-12345678999999999999999999999999999990"), 29)));
    EXPECT_FALSE(
      compare(Decimal(Int128("-12345678999999999999999999999999999990"), 29),
              Decimal(Int128("-123456789999999999999999999999999999900"), 30)));
    EXPECT_TRUE(
      compare(Decimal(Int128("-99999999999999999999999999999999999999"), 38),
              Decimal(Int128::minimumValue(), 39)));
  }

  TEST(Decimal, testString2Decimal) {
    // no decimal point
    Decimal decimal1("12345");
    EXPECT_EQ(Int128(12345), decimal1.value);
    EXPECT_EQ(0, decimal1.scale);

    Decimal decimal2("0");
    EXPECT_EQ(Int128(0), decimal2.value);
    EXPECT_EQ(0, decimal2.scale);

    Decimal decimal3("99999999999999999999999999999999999999");
    EXPECT_EQ(Int128("99999999999999999999999999999999999999"), decimal3.value);
    EXPECT_EQ(0, decimal3.scale);

    Decimal decimal4("-99999999999999999999999999999999999999");
    EXPECT_EQ(Int128("-99999999999999999999999999999999999999"), decimal4.value);
    EXPECT_EQ(0, decimal4.scale);

    Decimal decimal5("-12345");
    EXPECT_EQ(Int128(-12345), decimal5.value);
    EXPECT_EQ(0, decimal5.scale);

    // has decimal point
    Decimal decimal6("12345.12345");
    EXPECT_EQ(Int128("1234512345"), decimal6.value);
    EXPECT_EQ(5, decimal6.scale);

    Decimal decimal7("0.0");
    EXPECT_EQ(Int128(0), decimal7.value);
    EXPECT_EQ(1, decimal7.scale);

    Decimal decimal8("999999999999999999999999999999.99999999");
    EXPECT_EQ(Int128("99999999999999999999999999999999999999"), decimal8.value);
    EXPECT_EQ(8, decimal8.scale);

    Decimal decimal9("-999999999999999999999999999999.99999999");
    EXPECT_EQ(Int128("-99999999999999999999999999999999999999"), decimal9.value);
    EXPECT_EQ(8, decimal9.scale);

    Decimal decimal10("-123.45");
    EXPECT_EQ(Int128(-12345), decimal10.value);
    EXPECT_EQ(2, decimal10.scale);
  }

}