1    :  // Copyright 2012 Google Inc.
   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/lcov_writer.h"
  16    :  
  17    :  #include "base/file_util.h"
  18    :  #include "gmock/gmock.h"
  19    :  #include "gtest/gtest.h"
  20    :  
  21    :  namespace grinder {
  22    :  
  23    :  namespace {
  24    :  
  25    :  using testing::ContainerEq;
  26    :  
  27    :  class TestLineInfo : public LineInfo {
  28    :   public:
  29    :    using LineInfo::source_files_;
  30    :    using LineInfo::source_lines_;
  31    :  
  32  E :    void InitDummyLineInfoFoo() {
  33    :      LineInfo::SourceFileSet::iterator file_it =
  34  E :          source_files_.insert("foo.cc").first;
  35  E :      const std::string* file_name = &(*file_it);
  36    :  
  37    :      source_lines_.push_back(LineInfo::SourceLine(
  38  E :          file_name, 1, core::RelativeAddress(0), 1));
  39    :      source_lines_.push_back(LineInfo::SourceLine(
  40  E :          file_name, 2, core::RelativeAddress(1), 1));
  41    :      source_lines_.push_back(LineInfo::SourceLine(
  42  E :          file_name, 3, core::RelativeAddress(2), 1));
  43    :  
  44    :      // Visits lines 1 and 2.
  45  E :      Visit(core::RelativeAddress(0), 2);
  46  E :    }
  47    :  };
  48    :  
  49    :  // A simple utility class for creating and cleaning up a temporary file.
  50    :  class ScopedTempFile {
  51    :   public:
  52  E :    ScopedTempFile() {
  53  E :      file_util::CreateTemporaryFile(&path_);
  54  E :    }
  55    :  
  56  E :    ~ScopedTempFile() {
  57  E :      file_util::Delete(path_, false);
  58  E :    }
  59    :  
  60  E :    const FilePath& path() const { return path_; }
  61    :  
  62    :   private:
  63    :    FilePath path_;
  64    :  };
  65    :  
  66    :  }  // namespace
  67    :  
  68    :  // We provide this so that we can use ContainerEq. It must be outside of the
  69    :  // anonymous namespace for this to compile.
  70    :  bool operator==(const LcovWriter::CoverageInfo& lhs,
  71  E :                  const LcovWriter::CoverageInfo& rhs) {
  72  E :    return lhs.line_execution_count_map == rhs.line_execution_count_map;
  73  E :  }
  74    :  
  75  E :  TEST(LcovWriterTest, Construct) {
  76  E :    LcovWriter lcov;
  77  E :    EXPECT_TRUE(lcov.source_file_coverage_info_map().empty());
  78  E :  }
  79    :  
  80  E :  TEST(LcovWriterTest, Add) {
  81  E :    TestLineInfo line_info;
  82  E :    ASSERT_NO_FATAL_FAILURE(line_info.InitDummyLineInfoFoo());
  83    :  
  84  E :    LcovWriter lcov;
  85  E :    EXPECT_TRUE(lcov.Add(line_info));
  86    :  
  87  E :    LcovWriter::SourceFileCoverageInfoMap expected_coverage_info_map;
  88    :    LcovWriter::LineExecutionCountMap& expected_line_exec =
  89  E :        expected_coverage_info_map["foo.cc"].line_execution_count_map;
  90  E :    expected_line_exec[1] = 1;
  91  E :    expected_line_exec[2] = 1;
  92  E :    expected_line_exec[3] = 0;
  93    :  
  94    :    EXPECT_THAT(expected_coverage_info_map,
  95  E :                ContainerEq(lcov.source_file_coverage_info_map()));
  96  E :  }
  97    :  
  98  E :  TEST(LcovWriterTest, Write) {
  99  E :    TestLineInfo line_info;
 100  E :    ASSERT_NO_FATAL_FAILURE(line_info.InitDummyLineInfoFoo());
 101    :  
 102  E :    LcovWriter lcov;
 103  E :    EXPECT_TRUE(lcov.Add(line_info));
 104    :  
 105  E :    ScopedTempFile temp;
 106  E :    EXPECT_TRUE(lcov.Write(temp.path()));
 107    :  
 108  E :    std::string actual_contents;
 109  E :    EXPECT_TRUE(file_util::ReadFileToString(temp.path(), &actual_contents));
 110    :  
 111    :    std::string expected_contents =
 112    :        "SF:foo.cc\n"
 113    :        "DA:1,1\n"
 114    :        "DA:2,1\n"
 115    :        "DA:3,0\n"
 116    :        "LH:2\n"
 117    :        "LF:3\n"
 118  E :        "end_of_record\n";
 119    :  
 120  E :    EXPECT_EQ(expected_contents, actual_contents);
 121  E :  }
 122    :  
 123    :  }  // namespace grinder