unittests/ProfileData/CoverageMappingTest.cpp

   1 //===- unittest/ProfileData/CoverageMappingTest.cpp -------------------------=//
   2 //
   3 //                     The LLVM Compiler Infrastructure
   4 //
   5 // This file is distributed under the University of Illinois Open Source
   6 // License. See LICENSE.TXT for details.
   7 //
   8 //===----------------------------------------------------------------------===//
   9
  10 #include "llvm/ProfileData/Coverage/CoverageMapping.h"
  11 #include "llvm/ProfileData/Coverage/CoverageMappingReader.h"
  12 #include "llvm/ProfileData/Coverage/CoverageMappingWriter.h"
  13 #include "llvm/ProfileData/InstrProfReader.h"
  14 #include "llvm/ProfileData/InstrProfWriter.h"
  15 #include "llvm/Support/raw_ostream.h"
  16 #include "llvm/Testing/Support/Error.h"
  17 #include "llvm/Testing/Support/SupportHelpers.h"
  18 #include "gtest/gtest.h"
  19
  20 #include <ostream>
  21 #include <utility>
  22
  23 using namespace llvm;
  24 using namespace coverage;
  25
  26 LLVM_NODISCARD static ::testing::AssertionResult
  27 ErrorEquals(coveragemap_error Expected, Error E) {
  28   coveragemap_error Found;
  29   std::string FoundMsg;
  30   handleAllErrors(std::move(E), [&](const CoverageMapError &CME) {
  31     Found = CME.get();
  32     FoundMsg = CME.message();
  33   });
  34   if (Expected == Found)
  35     return ::testing::AssertionSuccess();
  36   return ::testing::AssertionFailure() << "error: " << FoundMsg << "\n";
  37 }
  38
  39 namespace llvm {
  40 namespace coverage {
  41 void PrintTo(const Counter &C, ::std::ostream *os) {
  42   if (C.isZero())
  43     *os << "Zero";
  44   else if (C.isExpression())
  45     *os << "Expression " << C.getExpressionID();
  46   else
  47     *os << "Counter " << C.getCounterID();
  48 }
  49
  50 void PrintTo(const CoverageSegment &S, ::std::ostream *os) {
  51   *os << "CoverageSegment(" << S.Line << ", " << S.Col << ", ";
  52   if (S.HasCount)
  53     *os << S.Count << ", ";
  54   *os << (S.IsRegionEntry ? "true" : "false") << ")";
  55 }
  56 }
  57 }
  58
  59 namespace {
  60
  61 struct OutputFunctionCoverageData {
  62   StringRef Name;
  63   uint64_t Hash;
  64   std::vector<StringRef> Filenames;
  65   std::vector<CounterMappingRegion> Regions;
  66
  67   OutputFunctionCoverageData() : Hash(0) {}
  68
  69   OutputFunctionCoverageData(OutputFunctionCoverageData &&OFCD)
  70       : Name(OFCD.Name), Hash(OFCD.Hash), Filenames(std::move(OFCD.Filenames)),
  71         Regions(std::move(OFCD.Regions)) {}
  72
  73   OutputFunctionCoverageData(const OutputFunctionCoverageData &) = delete;
  74   OutputFunctionCoverageData &
  75   operator=(const OutputFunctionCoverageData &) = delete;
  76   OutputFunctionCoverageData &operator=(OutputFunctionCoverageData &&) = delete;
  77
  78   void fillCoverageMappingRecord(CoverageMappingRecord &Record) const {
  79     Record.FunctionName = Name;
  80     Record.FunctionHash = Hash;
  81     Record.Filenames = Filenames;
  82     Record.Expressions = {};
  83     Record.MappingRegions = Regions;
  84   }
  85 };
  86
  87 struct CoverageMappingReaderMock : CoverageMappingReader {
  88   ArrayRef<OutputFunctionCoverageData> Functions;
  89
  90   CoverageMappingReaderMock(ArrayRef<OutputFunctionCoverageData> Functions)
  91       : Functions(Functions) {}
  92
  93   Error readNextRecord(CoverageMappingRecord &Record) override {
  94     if (Functions.empty())
  95       return make_error<CoverageMapError>(coveragemap_error::eof);
  96
  97     Functions.front().fillCoverageMappingRecord(Record);
  98     Functions = Functions.slice(1);
  99
 100     return Error::success();
 101   }
 102 };
 103
 104 struct InputFunctionCoverageData {
 105   // Maps the global file index from CoverageMappingTest.Files
 106   // to the index of that file within this function. We can't just use
 107   // global file indexes here because local indexes have to be dense.
 108   // This map is used during serialization to create the virtual file mapping
 109   // (from local fileId to global Index) in the head of the per-function
 110   // coverage mapping data.
 111   SmallDenseMap<unsigned, unsigned> ReverseVirtualFileMapping;
 112   std::string Name;
 113   uint64_t Hash;
 114   std::vector<CounterMappingRegion> Regions;
 115
 116   InputFunctionCoverageData(std::string Name, uint64_t Hash)
 117       : Name(std::move(Name)), Hash(Hash) {}
 118
 119   InputFunctionCoverageData(InputFunctionCoverageData &&IFCD)
 120       : ReverseVirtualFileMapping(std::move(IFCD.ReverseVirtualFileMapping)),
 121         Name(std::move(IFCD.Name)), Hash(IFCD.Hash),
 122         Regions(std::move(IFCD.Regions)) {}
 123
 124   InputFunctionCoverageData(const InputFunctionCoverageData &) = delete;
 125   InputFunctionCoverageData &
 126   operator=(const InputFunctionCoverageData &) = delete;
 127   InputFunctionCoverageData &operator=(InputFunctionCoverageData &&) = delete;
 128 };
 129
 130 struct CoverageMappingTest : ::testing::TestWithParam<std::pair<bool, bool>> {
 131   bool UseMultipleReaders;
 132   StringMap<unsigned> Files;
 133   std::vector<InputFunctionCoverageData> InputFunctions;
 134   std::vector<OutputFunctionCoverageData> OutputFunctions;
 135
 136   InstrProfWriter ProfileWriter;
 137   std::unique_ptr<IndexedInstrProfReader> ProfileReader;
 138
 139   std::unique_ptr<CoverageMapping> LoadedCoverage;
 140
 141   void SetUp() override {
 142     ProfileWriter.setOutputSparse(GetParam().first);
 143     UseMultipleReaders = GetParam().second;
 144   }
 145
 146   unsigned getGlobalFileIndex(StringRef Name) {
 147     auto R = Files.find(Name);
 148     if (R != Files.end())
 149       return R->second;
 150     unsigned Index = Files.size();
 151     Files.try_emplace(Name, Index);
 152     return Index;
 153   }
 154
 155   // Return the file index of file 'Name' for the current function.
 156   // Add the file into the global map if necessary.
 157   // See also InputFunctionCoverageData::ReverseVirtualFileMapping
 158   // for additional comments.
 159   unsigned getFileIndexForFunction(StringRef Name) {
 160     unsigned GlobalIndex = getGlobalFileIndex(Name);
 161     auto &CurrentFunctionFileMapping =
 162         InputFunctions.back().ReverseVirtualFileMapping;
 163     auto R = CurrentFunctionFileMapping.find(GlobalIndex);
 164     if (R != CurrentFunctionFileMapping.end())
 165       return R->second;
 166     unsigned IndexInFunction = CurrentFunctionFileMapping.size();
 167     CurrentFunctionFileMapping.insert(
 168         std::make_pair(GlobalIndex, IndexInFunction));
 169     return IndexInFunction;
 170   }
 171
 172   void startFunction(StringRef FuncName, uint64_t Hash) {
 173     InputFunctions.emplace_back(FuncName.str(), Hash);
 174   }
 175
 176   void addCMR(Counter C, StringRef File, unsigned LS, unsigned CS, unsigned LE,
 177               unsigned CE, bool Skipped = false) {
 178     auto &Regions = InputFunctions.back().Regions;
 179     unsigned FileID = getFileIndexForFunction(File);
 180     Regions.push_back(
 181         Skipped ? CounterMappingRegion::makeSkipped(FileID, LS, CS, LE, CE)
 182                 : CounterMappingRegion::makeRegion(C, FileID, LS, CS, LE, CE));
 183   }
 184
 185   void addExpansionCMR(StringRef File, StringRef ExpandedFile, unsigned LS,
 186                        unsigned CS, unsigned LE, unsigned CE) {
 187     InputFunctions.back().Regions.push_back(CounterMappingRegion::makeExpansion(
 188         getFileIndexForFunction(File), getFileIndexForFunction(ExpandedFile),
 189         LS, CS, LE, CE));
 190   }
 191
 192   std::string writeCoverageRegions(InputFunctionCoverageData &Data) {
 193     SmallVector<unsigned, 8> FileIDs(Data.ReverseVirtualFileMapping.size());
 194     for (const auto &E : Data.ReverseVirtualFileMapping)
 195       FileIDs[E.second] = E.first;
 196     std::string Coverage;
 197     llvm::raw_string_ostream OS(Coverage);
 198     CoverageMappingWriter(FileIDs, None, Data.Regions).write(OS);
 199     return OS.str();
 200   }
 201
 202   void readCoverageRegions(const std::string &Coverage,
 203                            OutputFunctionCoverageData &Data) {
 204     SmallVector<StringRef, 8> Filenames(Files.size());
 205     for (const auto &E : Files)
 206       Filenames[E.getValue()] = E.getKey();
 207     std::vector<CounterExpression> Expressions;
 208     RawCoverageMappingReader Reader(Coverage, Filenames, Data.Filenames,
 209                                     Expressions, Data.Regions);
 210     EXPECT_THAT_ERROR(Reader.read(), Succeeded());
 211   }
 212
 213   void writeAndReadCoverageRegions(bool EmitFilenames = true) {
 214     OutputFunctions.resize(InputFunctions.size());
 215     for (unsigned I = 0; I < InputFunctions.size(); ++I) {
 216       std::string Regions = writeCoverageRegions(InputFunctions[I]);
 217       readCoverageRegions(Regions, OutputFunctions[I]);
 218       OutputFunctions[I].Name = InputFunctions[I].Name;
 219       OutputFunctions[I].Hash = InputFunctions[I].Hash;
 220       if (!EmitFilenames)
 221         OutputFunctions[I].Filenames.clear();
 222     }
 223   }
 224
 225   void readProfCounts() {
 226     auto Profile = ProfileWriter.writeBuffer();
 227     auto ReaderOrErr = IndexedInstrProfReader::create(std::move(Profile));
 228     EXPECT_THAT_ERROR(ReaderOrErr.takeError(), Succeeded());
 229     ProfileReader = std::move(ReaderOrErr.get());
 230   }
 231
 232   Expected<std::unique_ptr<CoverageMapping>> readOutputFunctions() {
 233     std::vector<std::unique_ptr<CoverageMappingReader>> CoverageReaders;
 234     if (UseMultipleReaders) {
 235       for (const auto &OF : OutputFunctions) {
 236         ArrayRef<OutputFunctionCoverageData> Funcs(OF);
 237         CoverageReaders.push_back(
 238             make_unique<CoverageMappingReaderMock>(Funcs));
 239       }
 240     } else {
 241       ArrayRef<OutputFunctionCoverageData> Funcs(OutputFunctions);
 242       CoverageReaders.push_back(
 243           make_unique<CoverageMappingReaderMock>(Funcs));
 244     }
 245     return CoverageMapping::load(CoverageReaders, *ProfileReader);
 246   }
 247
 248   Error loadCoverageMapping(bool EmitFilenames = true) {
 249     readProfCounts();
 250     writeAndReadCoverageRegions(EmitFilenames);
 251     auto CoverageOrErr = readOutputFunctions();
 252     if (!CoverageOrErr)
 253       return CoverageOrErr.takeError();
 254     LoadedCoverage = std::move(CoverageOrErr.get());
 255     return Error::success();
 256   }
 257 };
 258
 259 TEST_P(CoverageMappingTest, basic_write_read) {
 260   startFunction("func", 0x1234);
 261   addCMR(Counter::getCounter(0), "foo", 1, 1, 1, 1);
 262   addCMR(Counter::getCounter(1), "foo", 2, 1, 2, 2);
 263   addCMR(Counter::getZero(),     "foo", 3, 1, 3, 4);
 264   addCMR(Counter::getCounter(2), "foo", 4, 1, 4, 8);
 265   addCMR(Counter::getCounter(3), "bar", 1, 2, 3, 4);
 266
 267   writeAndReadCoverageRegions();
 268   ASSERT_EQ(1u, InputFunctions.size());
 269   ASSERT_EQ(1u, OutputFunctions.size());
 270   InputFunctionCoverageData &Input = InputFunctions.back();
 271   OutputFunctionCoverageData &Output = OutputFunctions.back();
 272
 273   size_t N = makeArrayRef(Input.Regions).size();
 274   ASSERT_EQ(N, Output.Regions.size());
 275   for (size_t I = 0; I < N; ++I) {
 276     ASSERT_EQ(Input.Regions[I].Count, Output.Regions[I].Count);
 277     ASSERT_EQ(Input.Regions[I].FileID, Output.Regions[I].FileID);
 278     ASSERT_EQ(Input.Regions[I].startLoc(), Output.Regions[I].startLoc());
 279     ASSERT_EQ(Input.Regions[I].endLoc(), Output.Regions[I].endLoc());
 280     ASSERT_EQ(Input.Regions[I].Kind, Output.Regions[I].Kind);
 281   }
 282 }
 283
 284 TEST_P(CoverageMappingTest, correct_deserialize_for_more_than_two_files) {
 285   const char *FileNames[] = {"bar", "baz", "foo"};
 286   static const unsigned N = array_lengthof(FileNames);
 287
 288   startFunction("func", 0x1234);
 289   for (unsigned I = 0; I < N; ++I)
 290     // Use LineStart to hold the index of the file name
 291     // in order to preserve that information during possible sorting of CMRs.
 292     addCMR(Counter::getCounter(0), FileNames[I], I, 1, I, 1);
 293
 294   writeAndReadCoverageRegions();
 295   ASSERT_EQ(1u, OutputFunctions.size());
 296   OutputFunctionCoverageData &Output = OutputFunctions.back();
 297
 298   ASSERT_EQ(N, Output.Regions.size());
 299   ASSERT_EQ(N, Output.Filenames.size());
 300
 301   for (unsigned I = 0; I < N; ++I) {
 302     ASSERT_GT(N, Output.Regions[I].FileID);
 303     ASSERT_GT(N, Output.Regions[I].LineStart);
 304     EXPECT_EQ(FileNames[Output.Regions[I].LineStart],
 305               Output.Filenames[Output.Regions[I].FileID]);
 306   }
 307 }
 308
 309 static const auto Err = [](Error E) { FAIL(); };
 310
 311 TEST_P(CoverageMappingTest, load_coverage_for_more_than_two_files) {
 312   ProfileWriter.addRecord({"func", 0x1234, {0}}, Err);
 313
 314   const char *FileNames[] = {"bar", "baz", "foo"};
 315   static const unsigned N = array_lengthof(FileNames);
 316
 317   startFunction("func", 0x1234);
 318   for (unsigned I = 0; I < N; ++I)
 319     // Use LineStart to hold the index of the file name
 320     // in order to preserve that information during possible sorting of CMRs.
 321     addCMR(Counter::getCounter(0), FileNames[I], I, 1, I, 1);
 322
 323   EXPECT_THAT_ERROR(loadCoverageMapping(), Succeeded());
 324
 325   for (unsigned I = 0; I < N; ++I) {
 326     CoverageData Data = LoadedCoverage->getCoverageForFile(FileNames[I]);
 327     ASSERT_TRUE(!Data.empty());
 328     EXPECT_EQ(I, Data.begin()->Line);
 329   }
 330 }
 331
 332 TEST_P(CoverageMappingTest, load_coverage_with_bogus_function_name) {
 333   ProfileWriter.addRecord({"", 0x1234, {10}}, Err);
 334   startFunction("", 0x1234);
 335   addCMR(Counter::getCounter(0), "foo", 1, 1, 5, 5);
 336   EXPECT_TRUE(ErrorEquals(coveragemap_error::malformed, loadCoverageMapping()));
 337 }
 338
 339 TEST_P(CoverageMappingTest, load_coverage_for_several_functions) {
 340   ProfileWriter.addRecord({"func1", 0x1234, {10}}, Err);
 341   ProfileWriter.addRecord({"func2", 0x2345, {20}}, Err);
 342
 343   startFunction("func1", 0x1234);
 344   addCMR(Counter::getCounter(0), "foo", 1, 1, 5, 5);
 345
 346   startFunction("func2", 0x2345);
 347   addCMR(Counter::getCounter(0), "bar", 2, 2, 6, 6);
 348
 349   EXPECT_THAT_ERROR(loadCoverageMapping(), Succeeded());
 350
 351   const auto FunctionRecords = LoadedCoverage->getCoveredFunctions();
 352   EXPECT_EQ(2, std::distance(FunctionRecords.begin(), FunctionRecords.end()));
 353   for (const auto &FunctionRecord : FunctionRecords) {
 354     CoverageData Data = LoadedCoverage->getCoverageForFunction(FunctionRecord);
 355     std::vector<CoverageSegment> Segments(Data.begin(), Data.end());
 356     ASSERT_EQ(2U, Segments.size());
 357     if (FunctionRecord.Name == "func1") {
 358       EXPECT_EQ(CoverageSegment(1, 1, 10, true), Segments[0]);
 359       EXPECT_EQ(CoverageSegment(5, 5, false), Segments[1]);
 360     } else {
 361       ASSERT_EQ("func2", FunctionRecord.Name);
 362       EXPECT_EQ(CoverageSegment(2, 2, 20, true), Segments[0]);
 363       EXPECT_EQ(CoverageSegment(6, 6, false), Segments[1]);
 364     }
 365   }
 366 }
 367
 368 TEST_P(CoverageMappingTest, create_combined_regions) {
 369   ProfileWriter.addRecord({"func1", 0x1234, {1, 2, 3}}, Err);
 370   startFunction("func1", 0x1234);
 371
 372   // Given regions which start at the same location, emit a segment for the
 373   // last region.
 374   addCMR(Counter::getCounter(0), "file1", 1, 1, 2, 2);
 375   addCMR(Counter::getCounter(1), "file1", 1, 1, 2, 2);
 376   addCMR(Counter::getCounter(2), "file1", 1, 1, 2, 2);
 377
 378   EXPECT_THAT_ERROR(loadCoverageMapping(), Succeeded());
 379   const auto FunctionRecords = LoadedCoverage->getCoveredFunctions();
 380   const auto &FunctionRecord = *FunctionRecords.begin();
 381   CoverageData Data = LoadedCoverage->getCoverageForFunction(FunctionRecord);
 382   std::vector<CoverageSegment> Segments(Data.begin(), Data.end());
 383
 384   ASSERT_EQ(2U, Segments.size());
 385   EXPECT_EQ(CoverageSegment(1, 1, 6, true), Segments[0]);
 386   EXPECT_EQ(CoverageSegment(2, 2, false), Segments[1]);
 387 }
 388
 389 TEST_P(CoverageMappingTest, skipped_segments_have_no_count) {
 390   ProfileWriter.addRecord({"func1", 0x1234, {1}}, Err);
 391   startFunction("func1", 0x1234);
 392
 393   addCMR(Counter::getCounter(0), "file1", 1, 1, 5, 5);
 394   addCMR(Counter::getCounter(0), "file1", 5, 1, 5, 5, /*Skipped=*/true);
 395
 396   EXPECT_THAT_ERROR(loadCoverageMapping(), Succeeded());
 397   const auto FunctionRecords = LoadedCoverage->getCoveredFunctions();
 398   const auto &FunctionRecord = *FunctionRecords.begin();
 399   CoverageData Data = LoadedCoverage->getCoverageForFunction(FunctionRecord);
 400   std::vector<CoverageSegment> Segments(Data.begin(), Data.end());
 401
 402   ASSERT_EQ(3U, Segments.size());
 403   EXPECT_EQ(CoverageSegment(1, 1, 1, true), Segments[0]);
 404   EXPECT_EQ(CoverageSegment(5, 1, true), Segments[1]);
 405   EXPECT_EQ(CoverageSegment(5, 5, false), Segments[2]);
 406 }
 407
 408 TEST_P(CoverageMappingTest, multiple_regions_end_after_parent_ends) {
 409   ProfileWriter.addRecord({"func1", 0x1234, {1, 0}}, Err);
 410   startFunction("func1", 0x1234);
 411
 412   // 1| F{ a{
 413   // 2|
 414   // 3|    a} b{ c{
 415   // 4|
 416   // 5|    b}
 417   // 6|
 418   // 7| c} d{   e{
 419   // 8|
 420   // 9| d}      e} F}
 421   addCMR(Counter::getCounter(0), "file1", 1, 1, 9, 9); // < F
 422   addCMR(Counter::getCounter(0), "file1", 1, 1, 3, 5); // < a
 423   addCMR(Counter::getCounter(0), "file1", 3, 5, 5, 4); // < b
 424   addCMR(Counter::getCounter(1), "file1", 3, 5, 7, 3); // < c
 425   addCMR(Counter::getCounter(1), "file1", 7, 3, 9, 2); // < d
 426   addCMR(Counter::getCounter(1), "file1", 7, 7, 9, 7); // < e
 427
 428   EXPECT_THAT_ERROR(loadCoverageMapping(), Succeeded());
 429   const auto FunctionRecords = LoadedCoverage->getCoveredFunctions();
 430   const auto &FunctionRecord = *FunctionRecords.begin();
 431   CoverageData Data = LoadedCoverage->getCoverageForFunction(FunctionRecord);
 432   std::vector<CoverageSegment> Segments(Data.begin(), Data.end());
 433
 434   // Old output (not sorted or unique):
 435   //   Segment at 1:1 with count 1
 436   //   Segment at 1:1 with count 1
 437   //   Segment at 3:5 with count 1
 438   //   Segment at 3:5 with count 0
 439   //   Segment at 3:5 with count 1
 440   //   Segment at 5:4 with count 0
 441   //   Segment at 7:3 with count 1
 442   //   Segment at 7:3 with count 0
 443   //   Segment at 7:7 with count 0
 444   //   Segment at 9:7 with count 0
 445   //   Segment at 9:2 with count 1
 446   //   Top level segment at 9:9
 447
 448   // New output (sorted and unique):
 449   //   Segment at 1:1 (count = 1), RegionEntry
 450   //   Segment at 3:5 (count = 1), RegionEntry
 451   //   Segment at 5:4 (count = 0)
 452   //   Segment at 7:3 (count = 0), RegionEntry
 453   //   Segment at 7:7 (count = 0), RegionEntry
 454   //   Segment at 9:2 (count = 0)
 455   //   Segment at 9:7 (count = 1)
 456   //   Segment at 9:9 (count = 0), Skipped
 457
 458   ASSERT_EQ(8U, Segments.size());
 459   EXPECT_EQ(CoverageSegment(1, 1, 1, true), Segments[0]);
 460   EXPECT_EQ(CoverageSegment(3, 5, 1, true), Segments[1]);
 461   EXPECT_EQ(CoverageSegment(5, 4, 0, false), Segments[2]);
 462   EXPECT_EQ(CoverageSegment(7, 3, 0, true), Segments[3]);
 463   EXPECT_EQ(CoverageSegment(7, 7, 0, true), Segments[4]);
 464   EXPECT_EQ(CoverageSegment(9, 2, 0, false), Segments[5]);
 465   EXPECT_EQ(CoverageSegment(9, 7, 1, false), Segments[6]);
 466   EXPECT_EQ(CoverageSegment(9, 9, false), Segments[7]);
 467 }
 468
 469 TEST_P(CoverageMappingTest, multiple_completed_segments_at_same_loc) {
 470   ProfileWriter.addRecord({"func1", 0x1234, {0, 1, 2}}, Err);
 471   startFunction("func1", 0x1234);
 472
 473   // PR35495
 474   addCMR(Counter::getCounter(1), "file1", 2, 1, 18, 2);
 475   addCMR(Counter::getCounter(0), "file1", 8, 10, 14, 6);
 476   addCMR(Counter::getCounter(0), "file1", 8, 12, 14, 6);
 477   addCMR(Counter::getCounter(1), "file1", 9, 1, 14, 6);
 478   addCMR(Counter::getCounter(2), "file1", 11, 13, 11, 14);
 479
 480   EXPECT_THAT_ERROR(loadCoverageMapping(), Succeeded());
 481   const auto FunctionRecords = LoadedCoverage->getCoveredFunctions();
 482   const auto &FunctionRecord = *FunctionRecords.begin();
 483   CoverageData Data = LoadedCoverage->getCoverageForFunction(FunctionRecord);
 484   std::vector<CoverageSegment> Segments(Data.begin(), Data.end());
 485
 486   ASSERT_EQ(7U, Segments.size());
 487   EXPECT_EQ(CoverageSegment(2, 1, 1, true), Segments[0]);
 488   EXPECT_EQ(CoverageSegment(8, 10, 0, true), Segments[1]);
 489   EXPECT_EQ(CoverageSegment(8, 12, 0, true), Segments[2]);
 490   EXPECT_EQ(CoverageSegment(9, 1, 1, true), Segments[3]);
 491   EXPECT_EQ(CoverageSegment(11, 13, 2, true), Segments[4]);
 492   // Use count=1 (from 9:1 -> 14:6), not count=0 (from 8:12 -> 14:6).
 493   EXPECT_EQ(CoverageSegment(11, 14, 1, false), Segments[5]);
 494   EXPECT_EQ(CoverageSegment(18, 2, false), Segments[6]);
 495 }
 496
 497 TEST_P(CoverageMappingTest, dont_emit_redundant_segments) {
 498   ProfileWriter.addRecord({"func1", 0x1234, {1, 1}}, Err);
 499   startFunction("func1", 0x1234);
 500
 501   addCMR(Counter::getCounter(0), "file1", 1, 1, 4, 4);
 502   addCMR(Counter::getCounter(1), "file1", 2, 2, 5, 5);
 503   addCMR(Counter::getCounter(0), "file1", 3, 3, 6, 6);
 504
 505   EXPECT_THAT_ERROR(loadCoverageMapping(), Succeeded());
 506   const auto FunctionRecords = LoadedCoverage->getCoveredFunctions();
 507   const auto &FunctionRecord = *FunctionRecords.begin();
 508   CoverageData Data = LoadedCoverage->getCoverageForFunction(FunctionRecord);
 509   std::vector<CoverageSegment> Segments(Data.begin(), Data.end());
 510
 511   ASSERT_EQ(5U, Segments.size());
 512   EXPECT_EQ(CoverageSegment(1, 1, 1, true), Segments[0]);
 513   EXPECT_EQ(CoverageSegment(2, 2, 1, true), Segments[1]);
 514   EXPECT_EQ(CoverageSegment(3, 3, 1, true), Segments[2]);
 515   EXPECT_EQ(CoverageSegment(4, 4, 1, false), Segments[3]);
 516   // A closing segment starting at 5:5 would be redundant: it would have the
 517   // same count as the segment starting at 4:4, and has all the same metadata.
 518   EXPECT_EQ(CoverageSegment(6, 6, false), Segments[4]);
 519 }
 520
 521 TEST_P(CoverageMappingTest, dont_emit_closing_segment_at_new_region_start) {
 522   ProfileWriter.addRecord({"func1", 0x1234, {1}}, Err);
 523   startFunction("func1", 0x1234);
 524
 525   addCMR(Counter::getCounter(0), "file1", 1, 1, 6, 5);
 526   addCMR(Counter::getCounter(0), "file1", 2, 2, 6, 5);
 527   addCMR(Counter::getCounter(0), "file1", 3, 3, 6, 5);
 528   addCMR(Counter::getCounter(0), "file1", 6, 5, 7, 7);
 529
 530   EXPECT_THAT_ERROR(loadCoverageMapping(), Succeeded());
 531   const auto FunctionRecords = LoadedCoverage->getCoveredFunctions();
 532   const auto &FunctionRecord = *FunctionRecords.begin();
 533   CoverageData Data = LoadedCoverage->getCoverageForFunction(FunctionRecord);
 534   std::vector<CoverageSegment> Segments(Data.begin(), Data.end());
 535
 536   ASSERT_EQ(5U, Segments.size());
 537   EXPECT_EQ(CoverageSegment(1, 1, 1, true), Segments[0]);
 538   EXPECT_EQ(CoverageSegment(2, 2, 1, true), Segments[1]);
 539   EXPECT_EQ(CoverageSegment(3, 3, 1, true), Segments[2]);
 540   EXPECT_EQ(CoverageSegment(6, 5, 1, true), Segments[3]);
 541   // The old segment builder would get this wrong by emitting multiple segments
 542   // which start at 6:5 (a few of which were skipped segments). We should just
 543   // get a segment for the region entry.
 544   EXPECT_EQ(CoverageSegment(7, 7, false), Segments[4]);
 545 }
 546
 547 TEST_P(CoverageMappingTest, handle_consecutive_regions_with_zero_length) {
 548   ProfileWriter.addRecord({"func1", 0x1234, {1, 2}}, Err);
 549   startFunction("func1", 0x1234);
 550
 551   addCMR(Counter::getCounter(0), "file1", 1, 1, 1, 1);
 552   addCMR(Counter::getCounter(1), "file1", 1, 1, 1, 1);
 553   addCMR(Counter::getCounter(0), "file1", 1, 1, 1, 1);
 554   addCMR(Counter::getCounter(1), "file1", 1, 1, 1, 1);
 555   addCMR(Counter::getCounter(0), "file1", 1, 1, 1, 1);
 556
 557   EXPECT_THAT_ERROR(loadCoverageMapping(), Succeeded());
 558   const auto FunctionRecords = LoadedCoverage->getCoveredFunctions();
 559   const auto &FunctionRecord = *FunctionRecords.begin();
 560   CoverageData Data = LoadedCoverage->getCoverageForFunction(FunctionRecord);
 561   std::vector<CoverageSegment> Segments(Data.begin(), Data.end());
 562
 563   ASSERT_EQ(1U, Segments.size());
 564   EXPECT_EQ(CoverageSegment(1, 1, true), Segments[0]);
 565   // We need to get a skipped segment starting at 1:1. In this case there is
 566   // also a region entry at 1:1.
 567 }
 568
 569 TEST_P(CoverageMappingTest, handle_sandwiched_zero_length_region) {
 570   ProfileWriter.addRecord({"func1", 0x1234, {2, 1}}, Err);
 571   startFunction("func1", 0x1234);
 572
 573   addCMR(Counter::getCounter(0), "file1", 1, 5, 4, 4);
 574   addCMR(Counter::getCounter(1), "file1", 1, 9, 1, 50);
 575   addCMR(Counter::getCounter(1), "file1", 2, 7, 2, 34);
 576   addCMR(Counter::getCounter(1), "file1", 3, 5, 3, 21);
 577   addCMR(Counter::getCounter(1), "file1", 3, 21, 3, 21);
 578   addCMR(Counter::getCounter(1), "file1", 4, 12, 4, 17);
 579
 580   EXPECT_THAT_ERROR(loadCoverageMapping(), Succeeded());
 581   const auto FunctionRecords = LoadedCoverage->getCoveredFunctions();
 582   const auto &FunctionRecord = *FunctionRecords.begin();
 583   CoverageData Data = LoadedCoverage->getCoverageForFunction(FunctionRecord);
 584   std::vector<CoverageSegment> Segments(Data.begin(), Data.end());
 585
 586   ASSERT_EQ(10U, Segments.size());
 587   EXPECT_EQ(CoverageSegment(1, 5, 2, true), Segments[0]);
 588   EXPECT_EQ(CoverageSegment(1, 9, 1, true), Segments[1]);
 589   EXPECT_EQ(CoverageSegment(1, 50, 2, false), Segments[2]);
 590   EXPECT_EQ(CoverageSegment(2, 7, 1, true), Segments[3]);
 591   EXPECT_EQ(CoverageSegment(2, 34, 2, false), Segments[4]);
 592   EXPECT_EQ(CoverageSegment(3, 5, 1, true), Segments[5]);
 593   EXPECT_EQ(CoverageSegment(3, 21, 2, true), Segments[6]);
 594   // Handle the zero-length region by creating a segment with its predecessor's
 595   // count (i.e the count from 1:5 -> 4:4).
 596   EXPECT_EQ(CoverageSegment(4, 4, false), Segments[7]);
 597   // The area between 4:4 and 4:12 is skipped.
 598   EXPECT_EQ(CoverageSegment(4, 12, 1, true), Segments[8]);
 599   EXPECT_EQ(CoverageSegment(4, 17, false), Segments[9]);
 600 }
 601
 602 TEST_P(CoverageMappingTest, handle_last_completed_region) {
 603   ProfileWriter.addRecord({"func1", 0x1234, {1, 2, 3, 4}}, Err);
 604   startFunction("func1", 0x1234);
 605
 606   addCMR(Counter::getCounter(0), "file1", 1, 1, 8, 8);
 607   addCMR(Counter::getCounter(1), "file1", 2, 2, 5, 5);
 608   addCMR(Counter::getCounter(2), "file1", 3, 3, 4, 4);
 609   addCMR(Counter::getCounter(3), "file1", 6, 6, 7, 7);
 610
 611   EXPECT_THAT_ERROR(loadCoverageMapping(), Succeeded());
 612   const auto FunctionRecords = LoadedCoverage->getCoveredFunctions();
 613   const auto &FunctionRecord = *FunctionRecords.begin();
 614   CoverageData Data = LoadedCoverage->getCoverageForFunction(FunctionRecord);
 615   std::vector<CoverageSegment> Segments(Data.begin(), Data.end());
 616
 617   ASSERT_EQ(8U, Segments.size());
 618   EXPECT_EQ(CoverageSegment(1, 1, 1, true), Segments[0]);
 619   EXPECT_EQ(CoverageSegment(2, 2, 2, true), Segments[1]);
 620   EXPECT_EQ(CoverageSegment(3, 3, 3, true), Segments[2]);
 621   EXPECT_EQ(CoverageSegment(4, 4, 2, false), Segments[3]);
 622   EXPECT_EQ(CoverageSegment(5, 5, 1, false), Segments[4]);
 623   EXPECT_EQ(CoverageSegment(6, 6, 4, true), Segments[5]);
 624   EXPECT_EQ(CoverageSegment(7, 7, 1, false), Segments[6]);
 625   EXPECT_EQ(CoverageSegment(8, 8, false), Segments[7]);
 626 }
 627
 628 TEST_P(CoverageMappingTest, expansion_gets_first_counter) {
 629   startFunction("func", 0x1234);
 630   addCMR(Counter::getCounter(1), "foo", 10, 1, 10, 2);
 631   // This starts earlier in "foo", so the expansion should get its counter.
 632   addCMR(Counter::getCounter(2), "foo", 1, 1, 20, 1);
 633   addExpansionCMR("bar", "foo", 3, 3, 3, 3);
 634
 635   writeAndReadCoverageRegions();
 636   ASSERT_EQ(1u, OutputFunctions.size());
 637   OutputFunctionCoverageData &Output = OutputFunctions.back();
 638
 639   ASSERT_EQ(CounterMappingRegion::ExpansionRegion, Output.Regions[2].Kind);
 640   ASSERT_EQ(Counter::getCounter(2), Output.Regions[2].Count);
 641   ASSERT_EQ(3U, Output.Regions[2].LineStart);
 642 }
 643
 644 TEST_P(CoverageMappingTest, basic_coverage_iteration) {
 645   ProfileWriter.addRecord({"func", 0x1234, {30, 20, 10, 0}}, Err);
 646
 647   startFunction("func", 0x1234);
 648   addCMR(Counter::getCounter(0), "file1", 1, 1, 9, 9);
 649   addCMR(Counter::getCounter(1), "file1", 1, 1, 4, 7);
 650   addCMR(Counter::getCounter(2), "file1", 5, 8, 9, 1);
 651   addCMR(Counter::getCounter(3), "file1", 10, 10, 11, 11);
 652   EXPECT_THAT_ERROR(loadCoverageMapping(), Succeeded());
 653
 654   CoverageData Data = LoadedCoverage->getCoverageForFile("file1");
 655   std::vector<CoverageSegment> Segments(Data.begin(), Data.end());
 656   ASSERT_EQ(7U, Segments.size());
 657   ASSERT_EQ(CoverageSegment(1, 1, 20, true),  Segments[0]);
 658   ASSERT_EQ(CoverageSegment(4, 7, 30, false), Segments[1]);
 659   ASSERT_EQ(CoverageSegment(5, 8, 10, true),  Segments[2]);
 660   ASSERT_EQ(CoverageSegment(9, 1, 30, false), Segments[3]);
 661   ASSERT_EQ(CoverageSegment(9, 9, false),     Segments[4]);
 662   ASSERT_EQ(CoverageSegment(10, 10, 0, true), Segments[5]);
 663   ASSERT_EQ(CoverageSegment(11, 11, false),   Segments[6]);
 664 }
 665
 666 TEST_P(CoverageMappingTest, test_line_coverage_iterator) {
 667   ProfileWriter.addRecord({"func", 0x1234, {30, 20, 10, 0}}, Err);
 668
 669   startFunction("func", 0x1234);
 670   addCMR(Counter::getCounter(0), "file1", 1, 1, 9, 9);
 671   addCMR(Counter::getCounter(1), "file1", 1, 1, 4, 7);
 672   addCMR(Counter::getCounter(2), "file1", 5, 8, 9, 1);
 673   addCMR(Counter::getCounter(3), "file1", 10, 10, 11, 11);
 674   EXPECT_THAT_ERROR(loadCoverageMapping(), Succeeded());
 675
 676   CoverageData Data = LoadedCoverage->getCoverageForFile("file1");
 677
 678   unsigned Line = 0;
 679   unsigned LineCounts[] = {20, 20, 20, 20, 30, 10, 10, 10, 10, 0, 0};
 680   for (const auto &LCS : getLineCoverageStats(Data)) {
 681     ASSERT_EQ(Line + 1, LCS.getLine());
 682     errs() << "Line: " << Line + 1 << ", count = " << LCS.getExecutionCount() << "\n";
 683     ASSERT_EQ(LineCounts[Line], LCS.getExecutionCount());
 684     ++Line;
 685   }
 686   ASSERT_EQ(11U, Line);
 687 }
 688
 689 TEST_P(CoverageMappingTest, uncovered_function) {
 690   startFunction("func", 0x1234);
 691   addCMR(Counter::getZero(), "file1", 1, 2, 3, 4);
 692   EXPECT_THAT_ERROR(loadCoverageMapping(), Succeeded());
 693
 694   CoverageData Data = LoadedCoverage->getCoverageForFile("file1");
 695   std::vector<CoverageSegment> Segments(Data.begin(), Data.end());
 696   ASSERT_EQ(2U, Segments.size());
 697   ASSERT_EQ(CoverageSegment(1, 2, 0, true), Segments[0]);
 698   ASSERT_EQ(CoverageSegment(3, 4, false),   Segments[1]);
 699 }
 700
 701 TEST_P(CoverageMappingTest, uncovered_function_with_mapping) {
 702   startFunction("func", 0x1234);
 703   addCMR(Counter::getCounter(0), "file1", 1, 1, 9, 9);
 704   addCMR(Counter::getCounter(1), "file1", 1, 1, 4, 7);
 705   EXPECT_THAT_ERROR(loadCoverageMapping(), Succeeded());
 706
 707   CoverageData Data = LoadedCoverage->getCoverageForFile("file1");
 708   std::vector<CoverageSegment> Segments(Data.begin(), Data.end());
 709   ASSERT_EQ(3U, Segments.size());
 710   ASSERT_EQ(CoverageSegment(1, 1, 0, true),  Segments[0]);
 711   ASSERT_EQ(CoverageSegment(4, 7, 0, false), Segments[1]);
 712   ASSERT_EQ(CoverageSegment(9, 9, false),    Segments[2]);
 713 }
 714
 715 TEST_P(CoverageMappingTest, combine_regions) {
 716   ProfileWriter.addRecord({"func", 0x1234, {10, 20, 30}}, Err);
 717
 718   startFunction("func", 0x1234);
 719   addCMR(Counter::getCounter(0), "file1", 1, 1, 9, 9);
 720   addCMR(Counter::getCounter(1), "file1", 3, 3, 4, 4);
 721   addCMR(Counter::getCounter(2), "file1", 3, 3, 4, 4);
 722   EXPECT_THAT_ERROR(loadCoverageMapping(), Succeeded());
 723
 724   CoverageData Data = LoadedCoverage->getCoverageForFile("file1");
 725   std::vector<CoverageSegment> Segments(Data.begin(), Data.end());
 726   ASSERT_EQ(4U, Segments.size());
 727   ASSERT_EQ(CoverageSegment(1, 1, 10, true), Segments[0]);
 728   ASSERT_EQ(CoverageSegment(3, 3, 50, true), Segments[1]);
 729   ASSERT_EQ(CoverageSegment(4, 4, 10, false), Segments[2]);
 730   ASSERT_EQ(CoverageSegment(9, 9, false), Segments[3]);
 731 }
 732
 733 TEST_P(CoverageMappingTest, restore_combined_counter_after_nested_region) {
 734   ProfileWriter.addRecord({"func", 0x1234, {10, 20, 40}}, Err);
 735
 736   startFunction("func", 0x1234);
 737   addCMR(Counter::getCounter(0), "file1", 1, 1, 9, 9);
 738   addCMR(Counter::getCounter(1), "file1", 1, 1, 9, 9);
 739   addCMR(Counter::getCounter(2), "file1", 3, 3, 5, 5);
 740   EXPECT_THAT_ERROR(loadCoverageMapping(), Succeeded());
 741
 742   CoverageData Data = LoadedCoverage->getCoverageForFile("file1");
 743   std::vector<CoverageSegment> Segments(Data.begin(), Data.end());
 744   ASSERT_EQ(4U, Segments.size());
 745   EXPECT_EQ(CoverageSegment(1, 1, 30, true), Segments[0]);
 746   EXPECT_EQ(CoverageSegment(3, 3, 40, true), Segments[1]);
 747   EXPECT_EQ(CoverageSegment(5, 5, 30, false), Segments[2]);
 748   EXPECT_EQ(CoverageSegment(9, 9, false), Segments[3]);
 749 }
 750
 751 // If CodeRegions and ExpansionRegions cover the same area,
 752 // only counts of CodeRegions should be used.
 753 TEST_P(CoverageMappingTest, dont_combine_expansions) {
 754   ProfileWriter.addRecord({"func", 0x1234, {10, 20}}, Err);
 755   ProfileWriter.addRecord({"func", 0x1234, {0, 0}}, Err);
 756
 757   startFunction("func", 0x1234);
 758   addCMR(Counter::getCounter(0), "file1", 1, 1, 9, 9);
 759   addCMR(Counter::getCounter(1), "file1", 3, 3, 4, 4);
 760   addCMR(Counter::getCounter(1), "include1", 6, 6, 7, 7);
 761   addExpansionCMR("file1", "include1", 3, 3, 4, 4);
 762   EXPECT_THAT_ERROR(loadCoverageMapping(), Succeeded());
 763
 764   CoverageData Data = LoadedCoverage->getCoverageForFile("file1");
 765   std::vector<CoverageSegment> Segments(Data.begin(), Data.end());
 766   ASSERT_EQ(4U, Segments.size());
 767   ASSERT_EQ(CoverageSegment(1, 1, 10, true), Segments[0]);
 768   ASSERT_EQ(CoverageSegment(3, 3, 20, true), Segments[1]);
 769   ASSERT_EQ(CoverageSegment(4, 4, 10, false), Segments[2]);
 770   ASSERT_EQ(CoverageSegment(9, 9, false), Segments[3]);
 771 }
 772
 773 // If an area is covered only by ExpansionRegions, they should be combinated.
 774 TEST_P(CoverageMappingTest, combine_expansions) {
 775   ProfileWriter.addRecord({"func", 0x1234, {2, 3, 7}}, Err);
 776
 777   startFunction("func", 0x1234);
 778   addCMR(Counter::getCounter(1), "include1", 1, 1, 1, 10);
 779   addCMR(Counter::getCounter(2), "include2", 1, 1, 1, 10);
 780   addCMR(Counter::getCounter(0), "file", 1, 1, 5, 5);
 781   addExpansionCMR("file", "include1", 3, 1, 3, 5);
 782   addExpansionCMR("file", "include2", 3, 1, 3, 5);
 783
 784   EXPECT_THAT_ERROR(loadCoverageMapping(), Succeeded());
 785
 786   CoverageData Data = LoadedCoverage->getCoverageForFile("file");
 787   std::vector<CoverageSegment> Segments(Data.begin(), Data.end());
 788   ASSERT_EQ(4U, Segments.size());
 789   EXPECT_EQ(CoverageSegment(1, 1, 2, true), Segments[0]);
 790   EXPECT_EQ(CoverageSegment(3, 1, 10, true), Segments[1]);
 791   EXPECT_EQ(CoverageSegment(3, 5, 2, false), Segments[2]);
 792   EXPECT_EQ(CoverageSegment(5, 5, false), Segments[3]);
 793 }
 794
 795 TEST_P(CoverageMappingTest, strip_filename_prefix) {
 796   ProfileWriter.addRecord({"file1:func", 0x1234, {0}}, Err);
 797
 798   startFunction("file1:func", 0x1234);
 799   addCMR(Counter::getCounter(0), "file1", 1, 1, 9, 9);
 800   EXPECT_THAT_ERROR(loadCoverageMapping(), Succeeded());
 801
 802   std::vector<std::string> Names;
 803   for (const auto &Func : LoadedCoverage->getCoveredFunctions())
 804     Names.push_back(Func.Name);
 805   ASSERT_EQ(1U, Names.size());
 806   ASSERT_EQ("func", Names[0]);
 807 }
 808
 809 TEST_P(CoverageMappingTest, strip_unknown_filename_prefix) {
 810   ProfileWriter.addRecord({"<unknown>:func", 0x1234, {0}}, Err);
 811
 812   startFunction("<unknown>:func", 0x1234);
 813   addCMR(Counter::getCounter(0), "", 1, 1, 9, 9);
 814   EXPECT_THAT_ERROR(loadCoverageMapping(/*EmitFilenames=*/false), Succeeded());
 815
 816   std::vector<std::string> Names;
 817   for (const auto &Func : LoadedCoverage->getCoveredFunctions())
 818     Names.push_back(Func.Name);
 819   ASSERT_EQ(1U, Names.size());
 820   ASSERT_EQ("func", Names[0]);
 821 }
 822
 823 TEST_P(CoverageMappingTest, dont_detect_false_instantiations) {
 824   ProfileWriter.addRecord({"foo", 0x1234, {10}}, Err);
 825   ProfileWriter.addRecord({"bar", 0x2345, {20}}, Err);
 826
 827   startFunction("foo", 0x1234);
 828   addCMR(Counter::getCounter(0), "expanded", 1, 1, 1, 10);
 829   addExpansionCMR("main", "expanded", 4, 1, 4, 5);
 830
 831   startFunction("bar", 0x2345);
 832   addCMR(Counter::getCounter(0), "expanded", 1, 1, 1, 10);
 833   addExpansionCMR("main", "expanded", 9, 1, 9, 5);
 834
 835   EXPECT_THAT_ERROR(loadCoverageMapping(), Succeeded());
 836
 837   std::vector<InstantiationGroup> InstantiationGroups =
 838       LoadedCoverage->getInstantiationGroups("expanded");
 839   for (const auto &Group : InstantiationGroups)
 840     ASSERT_EQ(Group.size(), 1U);
 841 }
 842
 843 TEST_P(CoverageMappingTest, load_coverage_for_expanded_file) {
 844   ProfileWriter.addRecord({"func", 0x1234, {10}}, Err);
 845
 846   startFunction("func", 0x1234);
 847   addCMR(Counter::getCounter(0), "expanded", 1, 1, 1, 10);
 848   addExpansionCMR("main", "expanded", 4, 1, 4, 5);
 849
 850   EXPECT_THAT_ERROR(loadCoverageMapping(), Succeeded());
 851
 852   CoverageData Data = LoadedCoverage->getCoverageForFile("expanded");
 853   std::vector<CoverageSegment> Segments(Data.begin(), Data.end());
 854   ASSERT_EQ(2U, Segments.size());
 855   EXPECT_EQ(CoverageSegment(1, 1, 10, true), Segments[0]);
 856   EXPECT_EQ(CoverageSegment(1, 10, false), Segments[1]);
 857 }
 858
 859 TEST_P(CoverageMappingTest, skip_duplicate_function_record) {
 860   ProfileWriter.addRecord({"func", 0x1234, {1}}, Err);
 861
 862   // This record should be loaded.
 863   startFunction("func", 0x1234);
 864   addCMR(Counter::getCounter(0), "file1", 1, 1, 9, 9);
 865
 866   // This record should be loaded.
 867   startFunction("func", 0x1234);
 868   addCMR(Counter::getCounter(0), "file1", 1, 1, 9, 9);
 869   addCMR(Counter::getCounter(0), "file2", 1, 1, 9, 9);
 870
 871   // This record should be skipped.
 872   startFunction("func", 0x1234);
 873   addCMR(Counter::getCounter(0), "file1", 1, 1, 9, 9);
 874
 875   // This record should be loaded.
 876   startFunction("func", 0x1234);
 877   addCMR(Counter::getCounter(0), "file2", 1, 1, 9, 9);
 878   addCMR(Counter::getCounter(0), "file1", 1, 1, 9, 9);
 879
 880   // This record should be skipped.
 881   startFunction("func", 0x1234);
 882   addCMR(Counter::getCounter(0), "file1", 1, 1, 9, 9);
 883   addCMR(Counter::getCounter(0), "file2", 1, 1, 9, 9);
 884
 885   EXPECT_THAT_ERROR(loadCoverageMapping(), Succeeded());
 886
 887   auto Funcs = LoadedCoverage->getCoveredFunctions();
 888   unsigned NumFuncs = std::distance(Funcs.begin(), Funcs.end());
 889   ASSERT_EQ(3U, NumFuncs);
 890 }
 891
 892 // FIXME: Use ::testing::Combine() when llvm updates its copy of googletest.
 893 INSTANTIATE_TEST_CASE_P(ParameterizedCovMapTest, CoverageMappingTest,
 894                         ::testing::Values(std::pair<bool, bool>({false, false}),
 895                                           std::pair<bool, bool>({false, true}),
 896                                           std::pair<bool, bool>({true, false}),
 897                                           std::pair<bool, bool>({true, true})),);
 898
 899 } // end anonymous namespace