libc/test/src/stdlib/DivTest.h

   1 //===-- A template class for testing div functions --------------*- C++ -*-===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8
   9 #include "test/UnitTest/Test.h"
  10
  11 template <typename IntType, typename ReturnType>
  12 class DivTest : public LIBC_NAMESPACE::testing::Test {
  13 public:
  14   using DivFunc = ReturnType(IntType, IntType);
  15
  16   void simpleTest(DivFunc func) {
  17     auto result = func(10, 3);
  18     EXPECT_EQ(result.quot, IntType(3));
  19     EXPECT_EQ(result.rem, IntType(1));
  20
  21     result = func(-10, 3);
  22     EXPECT_EQ(result.quot, IntType(-3));
  23     EXPECT_EQ(result.rem, IntType(-1));
  24
  25     result = func(-10, -3);
  26     EXPECT_EQ(result.quot, IntType(3));
  27     EXPECT_EQ(result.rem, IntType(-1));
  28
  29     result = func(10, -3);
  30     EXPECT_EQ(result.quot, IntType(-3));
  31     EXPECT_EQ(result.rem, IntType(1));
  32   }
  33 };
  34
  35 #define LIST_DIV_TESTS(IntType, ReturnType, func)                              \
  36   using LlvmLibcDivTest = DivTest<IntType, ReturnType>;                        \
  37   TEST_F(LlvmLibcDivTest, SimpleTest##ReturnType) { simpleTest(func); }