text: //===- llvm/unittest/ADT/PointerEmbeddedIntTest.cpp -----------------------===//
  //
  // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
  // See https://llvm.org/LICENSE.txt for license information.
  // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
  //
  //===----------------------------------------------------------------------===//
  
  #include "llvm/ADT/PointerEmbeddedInt.h"
  #include "gtest/gtest.h"
  using namespace llvm;
  
  namespace {
  
  TEST(PointerEmbeddedIntTest, Basic) {
    PointerEmbeddedInt<int, CHAR_BIT> I = 42, J = 43;
  
    EXPECT_EQ(42, I);
    EXPECT_EQ(43, I + 1);
    EXPECT_EQ(sizeof(uintptr_t) * CHAR_BIT - CHAR_BIT,
              PointerLikeTypeTraits<decltype(I)>::NumLowBitsAvailable);
  
    EXPECT_FALSE(I == J);
    EXPECT_TRUE(I != J);
    EXPECT_TRUE(I < J);
    EXPECT_FALSE(I > J);
    EXPECT_TRUE(I <= J);
    EXPECT_FALSE(I >= J);
  
    EXPECT_FALSE(I == 43);
    EXPECT_TRUE(I != 43);
    EXPECT_TRUE(I < 43);
    EXPECT_FALSE(I > 43);
    EXPECT_TRUE(I <= 43);
    EXPECT_FALSE(I >= 43);
  
    EXPECT_FALSE(42 == J);
    EXPECT_TRUE(42 != J);
    EXPECT_TRUE(42 < J);
    EXPECT_FALSE(42 > J);
    EXPECT_TRUE(42 <= J);
    EXPECT_FALSE(42 >= J);
  }
  
  TEST(PointerEmbeddedIntTest, intptr_t) {
    PointerEmbeddedInt<intptr_t, CHAR_BIT> IPos = 42, INeg = -42;
    EXPECT_EQ(42, IPos);
    EXPECT_EQ(-42, INeg);
  
    PointerEmbeddedInt<uintptr_t, CHAR_BIT> U = 42, USaturated = 255;
    EXPECT_EQ(42U, U);
    EXPECT_EQ(255U, USaturated);
  
    PointerEmbeddedInt<intptr_t, std::numeric_limits<intptr_t>::digits>
        IMax = std::numeric_limits<intptr_t>::max() >> 1,
        IMin = std::numeric_limits<intptr_t>::min() >> 1;
    EXPECT_EQ(std::numeric_limits<intptr_t>::max() >> 1, IMax);
    EXPECT_EQ(std::numeric_limits<intptr_t>::min() >> 1, IMin);
  
    PointerEmbeddedInt<uintptr_t, std::numeric_limits<uintptr_t>::digits - 1>
        UMax = std::numeric_limits<uintptr_t>::max() >> 1,
        UMin = std::numeric_limits<uintptr_t>::min() >> 1;
    EXPECT_EQ(std::numeric_limits<uintptr_t>::max() >> 1, UMax);
    EXPECT_EQ(std::numeric_limits<uintptr_t>::min() >> 1, UMin);
  }
  
  TEST(PointerEmbeddedIntTest, PointerLikeTypeTraits) {
    PointerEmbeddedInt<int, CHAR_BIT> I = 42;
    using ITraits = PointerLikeTypeTraits<decltype(I)>;
    EXPECT_EQ(42, ITraits::getFromVoidPointer(ITraits::getAsVoidPointer(I)));
  
    PointerEmbeddedInt<uintptr_t, std::numeric_limits<uintptr_t>::digits - 1>
        Max = std::numeric_limits<uintptr_t>::max() >> 1;
    using MaxTraits = PointerLikeTypeTraits<decltype(Max)>;
    EXPECT_EQ(std::numeric_limits<uintptr_t>::max() >> 1,
              MaxTraits::getFromVoidPointer(MaxTraits::getAsVoidPointer(Max)));
  }
  
  } // end anonymous namespace
  