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    :  #include "syzygy/grinder/grinders/coverage_grinder.h"
  16    :  
  17    :  #include "base/win/scoped_com_initializer.h"
  18    :  #include "gtest/gtest.h"
  19    :  #include "syzygy/core/unittest_util.h"
  20    :  #include "syzygy/pe/unittest_util.h"
  21    :  
  22    :  namespace grinder {
  23    :  namespace grinders {
  24    :  
  25    :  namespace {
  26    :  
  27    :  class TestCoverageGrinder : public CoverageGrinder {
  28    :   public:
  29    :    using CoverageGrinder::parser_;
  30    :  };
  31    :  
  32    :  class CoverageGrinderTest : public testing::PELibUnitTest {
  33    :   public:
  34    :    typedef testing::PELibUnitTest Super;
  35    :  
  36  E :    CoverageGrinderTest() : cmd_line_(base::FilePath(L"coverage_grinder.exe")) {
  37  E :    }
  38    :  
  39  E :    virtual void SetUp() OVERRIDE {
  40  E :      Super::Test::SetUp();
  41  E :    }
  42    :  
  43  E :    void InitParser(trace::parser::ParseEventHandlerImpl* handler) {
  44  E :      ASSERT_TRUE(handler != NULL);
  45    :  
  46  E :      ASSERT_TRUE(parser_.Init(handler));
  47    :  
  48    :      base::FilePath trace_file =
  49  E :          testing::GetExeTestDataRelativePath(testing::kCoverageTraceFiles[0]);
  50    :  
  51  E :      ASSERT_TRUE(parser_.OpenTraceFile(trace_file));
  52  E :    }
  53    :  
  54    :    void GrindAndOutputSucceeds(
  55  E :        CoverageGrinder::OutputFormat expected_output_format) {
  56  E :      TestCoverageGrinder grinder;
  57  E :      grinder.ParseCommandLine(&cmd_line_);
  58  E :      EXPECT_EQ(expected_output_format, grinder.output_format());
  59    :  
  60  E :      ASSERT_NO_FATAL_FAILURE(InitParser(&grinder));
  61  E :      grinder.SetParser(&parser_);
  62  E :      ASSERT_TRUE(parser_.Consume());
  63    :  
  64  E :      EXPECT_TRUE(grinder.Grind());
  65    :  
  66  E :      testing::ScopedTempFile output_path;
  67  E :      base::ScopedFILE output_file(base::OpenFile(output_path.path(), "wb"));
  68  E :      ASSERT_TRUE(output_file.get() != NULL);
  69    :  
  70  E :      EXPECT_TRUE(grinder.OutputData(output_file.get()));
  71  E :      output_file.reset();
  72    :  
  73  E :      int64 cache_grind_file_size = 0;
  74  E :      ASSERT_TRUE(base::GetFileSize(output_path.path(), &cache_grind_file_size));
  75  E :      EXPECT_LT(0u, cache_grind_file_size);
  76  E :    }
  77    :  
  78    :    // Ensures that COM is initialized for tests in this fixture.
  79    :    base::win::ScopedCOMInitializer com_initializer_;
  80    :  
  81    :    CommandLine cmd_line_;
  82    :    trace::parser::Parser parser_;
  83    :  };
  84    :  
  85    :  }  // namespace
  86    :  
  87  E :  TEST_F(CoverageGrinderTest, ParseEmptyCommandLineSucceeds) {
  88  E :    TestCoverageGrinder grinder;
  89  E :    EXPECT_TRUE(grinder.ParseCommandLine(&cmd_line_));
  90  E :    EXPECT_EQ(CoverageGrinder::kLcovFormat, grinder.output_format());
  91  E :  }
  92    :  
  93  E :  TEST_F(CoverageGrinderTest, ParseInvalidOutputFormatFails) {
  94  E :    TestCoverageGrinder grinder;
  95  E :    cmd_line_.AppendSwitchASCII("output-format", "foobar");
  96  E :    EXPECT_FALSE(grinder.ParseCommandLine(&cmd_line_));
  97  E :  }
  98    :  
  99  E :  TEST_F(CoverageGrinderTest, SetParserSucceeds) {
 100  E :    TestCoverageGrinder grinder;
 101    :  
 102  E :    grinder.ParseCommandLine(&cmd_line_);
 103    :  
 104  E :    ASSERT_NO_FATAL_FAILURE(InitParser(&grinder));
 105    :  
 106  E :    grinder.SetParser(&parser_);
 107  E :    EXPECT_EQ(&parser_, grinder.parser_);
 108  E :  }
 109    :  
 110  E :  TEST_F(CoverageGrinderTest, GrindFailsOnNoCoverageEvents) {
 111  E :    TestCoverageGrinder grinder;
 112    :  
 113  E :    grinder.ParseCommandLine(&cmd_line_);
 114    :  
 115  E :    ASSERT_NO_FATAL_FAILURE(InitParser(&grinder));
 116  E :    grinder.SetParser(&parser_);
 117    :  
 118  E :    EXPECT_FALSE(grinder.Grind());
 119  E :  }
 120    :  
 121  E :  TEST_F(CoverageGrinderTest, GrindAndOutputLcovDataSucceeds) {
 122  E :    cmd_line_.AppendSwitchASCII("output-format", "lcov");
 123  E :    ASSERT_NO_FATAL_FAILURE(GrindAndOutputSucceeds(CoverageGrinder::kLcovFormat));
 124    :    // TODO(chrisha): Validate the output is a valid LCOV file.
 125  E :  }
 126    :  
 127  E :  TEST_F(CoverageGrinderTest, GrindAndOutputCacheGrindDataSucceeds) {
 128  E :    cmd_line_.AppendSwitchASCII("output-format", "cachegrind");
 129    :    ASSERT_NO_FATAL_FAILURE(GrindAndOutputSucceeds(
 130  E :        CoverageGrinder::kCacheGrindFormat));
 131    :    // TODO(chrisha): Validate the output is a valid CacheGrind file.
 132  E :  }
 133    :  
 134    :  }  // namespace grinders
 135    :  }  // namespace grinder