llvm/unittests/ADT/StringTableTest.cpp

   1 //===- llvm/unittest/ADT/StringTableTest.cpp - StringTable tests ----------===//
   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 "llvm/ADT/StringTable.h"
  10 #include "gmock/gmock.h"
  11 #include "gtest/gtest.h"
  12 #include <cstdlib>
  13
  14 using namespace llvm;
  15
  16 namespace {
  17
  18 using ::testing::Eq;
  19 using ::testing::StrEq;
  20
  21 TEST(StringTableTest, Basic) {
  22   static constexpr char InputTable[] = "\0test\0";
  23   constexpr StringTable T = InputTable;
  24
  25   // We support some limited constexpr operations, check those first.
  26   static_assert(T.size() == sizeof(InputTable));
  27   static_assert(T[0].empty());
  28   static_assert(T[StringTable::Offset()].empty());
  29   static_assert(T[1].size() == 4);
  30
  31   // And use normal Google Test runtime assertions to check the contents and
  32   // give more complete error messages.
  33   EXPECT_THAT(T[0], Eq(""));
  34   EXPECT_THAT(T[StringTable::Offset()], Eq(""));
  35   EXPECT_THAT(T[1], Eq("test"));
  36
  37   // Also check that this is a valid C-string.
  38   EXPECT_THAT(T[1].data(), StrEq("test"));
  39 }
  40
  41 } // anonymous namespace