1    :  // Copyright 2012 Google Inc. All Rights Reserved.
   2    :  //
   3    :  // Licensed under the Apache License, Version 2.0 (the "License");
   4    :  // you may not use this file except in compliance with the License.
   5    :  // You may obtain a copy of the License at
   6    :  //
   7    :  //     http://www.apache.org/licenses/LICENSE-2.0
   8    :  //
   9    :  // Unless required by applicable law or agreed to in writing, software
  10    :  // distributed under the License is distributed on an "AS IS" BASIS,
  11    :  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  12    :  // See the License for the specific language governing permissions and
  13    :  // limitations under the License.
  14    :  //
  15    :  // Coverage instrumentation transform unittests.
  16    :  
  17    :  #include "syzygy/instrument/transforms/coverage_transform.h"
  18    :  
  19    :  #include "gtest/gtest.h"
  20    :  #include "syzygy/block_graph/transform.h"
  21    :  #include "syzygy/block_graph/typed_block.h"
  22    :  #include "syzygy/common/indexed_frequency_data.h"
  23    :  #include "syzygy/core/unittest_util.h"
  24    :  #include "syzygy/instrument/transforms/unittest_util.h"
  25    :  #include "syzygy/pe/decomposer.h"
  26    :  #include "syzygy/pe/unittest_util.h"
  27    :  
  28    :  namespace instrument {
  29    :  namespace transforms {
  30    :  
  31    :  namespace {
  32    :  
  33    :  using common::IndexedFrequencyData;
  34    :  using block_graph::BlockGraph;
  35    :  
  36    :  class CoverageInstrumentationTransformTest
  37    :      : public testing::TestDllTransformTest {
  38    :   public:
  39  E :    virtual void SetUp() override { ASSERT_NO_FATAL_FAILURE(DecomposeTestDll()); }
  40    :  };
  41    :  
  42    :  }  // namespace
  43    :  
  44  E :  TEST_F(CoverageInstrumentationTransformTest, Apply) {
  45  E :    CoverageInstrumentationTransform tx;
  46    :    ASSERT_TRUE(block_graph::ApplyBlockGraphTransform(
  47  E :        &tx, policy_, &block_graph_, header_block_));
  48    :  
  49  E :    BlockGraph::Block* frequency_data_block = tx.frequency_data_block();
  50    :  
  51  E :    block_graph::ConstTypedBlock<IndexedFrequencyData> coverage_data;
  52  E :    ASSERT_TRUE(coverage_data.Init(0, frequency_data_block));
  53    :  
  54    :    // The frequency data block should have the appropriate size.
  55  E :    ASSERT_EQ(sizeof(IndexedFrequencyData), frequency_data_block->size());
  56  E :    ASSERT_EQ(sizeof(IndexedFrequencyData), frequency_data_block->data_size());
  57    :    EXPECT_EQ(coverage_data->num_entries,
  58  E :              tx.frequency_data_buffer_block()->size());
  59    :  
  60  E :    EXPECT_EQ(common::kBasicBlockCoverageAgentId, coverage_data->agent_id);
  61  E :    EXPECT_EQ(common::kBasicBlockFrequencyDataVersion, coverage_data->version);
  62  E :    EXPECT_EQ(IndexedFrequencyData::COVERAGE, coverage_data->data_type);
  63  E :    EXPECT_EQ(tx.bb_ranges().size(), coverage_data->num_entries);
  64    :    EXPECT_TRUE(coverage_data.HasReferenceAt(
  65  E :        coverage_data.OffsetOf(coverage_data->frequency_data)));
  66  E :  }
  67    :  
  68    :  }  // namespace transforms
  69    :  }  // namespace instrument