SPIRV-Tools/test/link/ids_limit_test.cpp

// Copyright (c) 2017 Pierre Moreau
//
// Licensed 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 <string>

#include "gmock/gmock.h"
#include "test/link/linker_fixture.h"

namespace spvtools {
namespace {

using ::testing::HasSubstr;
using IdsLimit = spvtest::LinkerTest;

TEST_F(IdsLimit, UnderLimit) {
  spvtest::Binaries binaries = {
      {
          SpvMagicNumber, SpvVersion, SPV_GENERATOR_CODEPLAY,
          0x2FFFFFu,  // NOTE: Bound
          0u,         // NOTE: Schema; reserved
      },
      {
          SpvMagicNumber, SpvVersion, SPV_GENERATOR_CODEPLAY,
          0x100000u,  // NOTE: Bound
          0u,         // NOTE: Schema; reserved
      }};
  spvtest::Binary linked_binary;

  ASSERT_EQ(SPV_SUCCESS, Link(binaries, &linked_binary));
  EXPECT_THAT(GetErrorMessage(), std::string());
  EXPECT_EQ(0x3FFFFEu, linked_binary[3]);
}

TEST_F(IdsLimit, OverLimit) {
  spvtest::Binaries binaries = {
      {
          SpvMagicNumber, SpvVersion, SPV_GENERATOR_CODEPLAY,
          0x2FFFFFu,  // NOTE: Bound
          0u,         // NOTE: Schema; reserved
      },
      {
          SpvMagicNumber, SpvVersion, SPV_GENERATOR_CODEPLAY,
          0x100000u,  // NOTE: Bound
          0u,         // NOTE: Schema; reserved
      },
      {
          SpvMagicNumber, SpvVersion, SPV_GENERATOR_CODEPLAY,
          3u,  // NOTE: Bound
          0u,  // NOTE: Schema; reserved
      }};

  spvtest::Binary linked_binary;

  EXPECT_EQ(SPV_ERROR_INVALID_ID, Link(binaries, &linked_binary));
  EXPECT_THAT(GetErrorMessage(),
              HasSubstr("The limit of IDs, 4194303, was exceeded: 4194304 is "
                        "the current ID bound."));
}

}  // namespace
}  // namespace spvtools