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Diffstat (limited to 'unittests/ProfileData/CoverageMappingTest.cpp')
| -rw-r--r-- | unittests/ProfileData/CoverageMappingTest.cpp | 262 |
1 files changed, 262 insertions, 0 deletions
diff --git a/unittests/ProfileData/CoverageMappingTest.cpp b/unittests/ProfileData/CoverageMappingTest.cpp new file mode 100644 index 0000000..9fceacb --- /dev/null +++ b/unittests/ProfileData/CoverageMappingTest.cpp @@ -0,0 +1,262 @@ +//===- unittest/ProfileData/CoverageMappingTest.cpp -------------------------=// +// +// The LLVM Compiler Infrastructure +// +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// + +#include "llvm/ProfileData/CoverageMapping.h" +#include "llvm/ProfileData/CoverageMappingReader.h" +#include "llvm/ProfileData/CoverageMappingWriter.h" +#include "llvm/ProfileData/InstrProfReader.h" +#include "llvm/ProfileData/InstrProfWriter.h" +#include "llvm/Support/raw_ostream.h" +#include "gtest/gtest.h" + +#include <sstream> + +using namespace llvm; +using namespace coverage; + +static ::testing::AssertionResult NoError(std::error_code EC) { + if (!EC) + return ::testing::AssertionSuccess(); + return ::testing::AssertionFailure() << "error " << EC.value() + << ": " << EC.message(); +} + +namespace llvm { +namespace coverage { +void PrintTo(const Counter &C, ::std::ostream *os) { + if (C.isZero()) + *os << "Zero"; + else if (C.isExpression()) + *os << "Expression " << C.getExpressionID(); + else + *os << "Counter " << C.getCounterID(); +} + +void PrintTo(const CoverageSegment &S, ::std::ostream *os) { + *os << "CoverageSegment(" << S.Line << ", " << S.Col << ", "; + if (S.HasCount) + *os << S.Count << ", "; + *os << (S.IsRegionEntry ? "true" : "false") << ")"; +} +} +} + +namespace { + +struct OneFunctionCoverageReader : CoverageMappingReader { + StringRef Name; + uint64_t Hash; + std::vector<StringRef> Filenames; + ArrayRef<CounterMappingRegion> Regions; + bool Done; + + OneFunctionCoverageReader(StringRef Name, uint64_t Hash, + ArrayRef<StringRef> Filenames, + ArrayRef<CounterMappingRegion> Regions) + : Name(Name), Hash(Hash), Filenames(Filenames), Regions(Regions), + Done(false) {} + + std::error_code readNextRecord(CoverageMappingRecord &Record) override { + if (Done) + return instrprof_error::eof; + Done = true; + + Record.FunctionName = Name; + Record.FunctionHash = Hash; + Record.Filenames = Filenames; + Record.Expressions = {}; + Record.MappingRegions = Regions; + return instrprof_error::success; + } +}; + +struct CoverageMappingTest : ::testing::Test { + StringMap<unsigned> Files; + unsigned NextFile; + std::vector<CounterMappingRegion> InputCMRs; + + std::vector<StringRef> OutputFiles; + std::vector<CounterExpression> OutputExpressions; + std::vector<CounterMappingRegion> OutputCMRs; + + InstrProfWriter ProfileWriter; + std::unique_ptr<IndexedInstrProfReader> ProfileReader; + + std::unique_ptr<CoverageMapping> LoadedCoverage; + + void SetUp() override { + NextFile = 0; + } + + unsigned getFile(StringRef Name) { + auto R = Files.find(Name); + if (R != Files.end()) + return R->second; + Files[Name] = NextFile; + return NextFile++; + } + + void addCMR(Counter C, StringRef File, unsigned LS, unsigned CS, unsigned LE, + unsigned CE) { + InputCMRs.push_back( + CounterMappingRegion::makeRegion(C, getFile(File), LS, CS, LE, CE)); + } + + void addExpansionCMR(StringRef File, StringRef ExpandedFile, unsigned LS, + unsigned CS, unsigned LE, unsigned CE) { + InputCMRs.push_back(CounterMappingRegion::makeExpansion( + getFile(File), getFile(ExpandedFile), LS, CS, LE, CE)); + } + + std::string writeCoverageRegions() { + SmallVector<unsigned, 8> FileIDs; + for (const auto &E : Files) + FileIDs.push_back(E.getValue()); + std::string Coverage; + llvm::raw_string_ostream OS(Coverage); + CoverageMappingWriter(FileIDs, None, InputCMRs).write(OS); + return OS.str(); + } + + void readCoverageRegions(std::string Coverage) { + SmallVector<StringRef, 8> Filenames; + for (const auto &E : Files) + Filenames.push_back(E.getKey()); + RawCoverageMappingReader Reader(Coverage, Filenames, OutputFiles, + OutputExpressions, OutputCMRs); + ASSERT_TRUE(NoError(Reader.read())); + } + + void readProfCounts() { + auto Profile = ProfileWriter.writeBuffer(); + auto ReaderOrErr = IndexedInstrProfReader::create(std::move(Profile)); + ASSERT_TRUE(NoError(ReaderOrErr.getError())); + ProfileReader = std::move(ReaderOrErr.get()); + } + + void loadCoverageMapping(StringRef FuncName, uint64_t Hash) { + std::string Regions = writeCoverageRegions(); + readCoverageRegions(Regions); + + SmallVector<StringRef, 8> Filenames; + for (const auto &E : Files) + Filenames.push_back(E.getKey()); + OneFunctionCoverageReader CovReader(FuncName, Hash, Filenames, OutputCMRs); + auto CoverageOrErr = CoverageMapping::load(CovReader, *ProfileReader); + ASSERT_TRUE(NoError(CoverageOrErr.getError())); + LoadedCoverage = std::move(CoverageOrErr.get()); + } +}; + +TEST_F(CoverageMappingTest, basic_write_read) { + addCMR(Counter::getCounter(0), "foo", 1, 1, 1, 1); + addCMR(Counter::getCounter(1), "foo", 2, 1, 2, 2); + addCMR(Counter::getZero(), "foo", 3, 1, 3, 4); + addCMR(Counter::getCounter(2), "foo", 4, 1, 4, 8); + addCMR(Counter::getCounter(3), "bar", 1, 2, 3, 4); + std::string Coverage = writeCoverageRegions(); + readCoverageRegions(Coverage); + + size_t N = makeArrayRef(InputCMRs).size(); + ASSERT_EQ(N, OutputCMRs.size()); + for (size_t I = 0; I < N; ++I) { + ASSERT_EQ(InputCMRs[I].Count, OutputCMRs[I].Count); + ASSERT_EQ(InputCMRs[I].FileID, OutputCMRs[I].FileID); + ASSERT_EQ(InputCMRs[I].startLoc(), OutputCMRs[I].startLoc()); + ASSERT_EQ(InputCMRs[I].endLoc(), OutputCMRs[I].endLoc()); + ASSERT_EQ(InputCMRs[I].Kind, OutputCMRs[I].Kind); + } +} + +TEST_F(CoverageMappingTest, expansion_gets_first_counter) { + addCMR(Counter::getCounter(1), "foo", 10, 1, 10, 2); + // This starts earlier in "foo", so the expansion should get its counter. + addCMR(Counter::getCounter(2), "foo", 1, 1, 20, 1); + addExpansionCMR("bar", "foo", 3, 3, 3, 3); + std::string Coverage = writeCoverageRegions(); + readCoverageRegions(Coverage); + + ASSERT_EQ(CounterMappingRegion::ExpansionRegion, OutputCMRs[2].Kind); + ASSERT_EQ(Counter::getCounter(2), OutputCMRs[2].Count); + ASSERT_EQ(3U, OutputCMRs[2].LineStart); +} + +TEST_F(CoverageMappingTest, basic_coverage_iteration) { + ProfileWriter.addFunctionCounts("func", 0x1234, {30, 20, 10, 0}); + readProfCounts(); + + addCMR(Counter::getCounter(0), "file1", 1, 1, 9, 9); + addCMR(Counter::getCounter(1), "file1", 1, 1, 4, 7); + addCMR(Counter::getCounter(2), "file1", 5, 8, 9, 1); + addCMR(Counter::getCounter(3), "file1", 10, 10, 11, 11); + loadCoverageMapping("func", 0x1234); + + CoverageData Data = LoadedCoverage->getCoverageForFile("file1"); + std::vector<CoverageSegment> Segments(Data.begin(), Data.end()); + ASSERT_EQ(7U, Segments.size()); + ASSERT_EQ(CoverageSegment(1, 1, 20, true), Segments[0]); + ASSERT_EQ(CoverageSegment(4, 7, 30, false), Segments[1]); + ASSERT_EQ(CoverageSegment(5, 8, 10, true), Segments[2]); + ASSERT_EQ(CoverageSegment(9, 1, 30, false), Segments[3]); + ASSERT_EQ(CoverageSegment(9, 9, false), Segments[4]); + ASSERT_EQ(CoverageSegment(10, 10, 0, true), Segments[5]); + ASSERT_EQ(CoverageSegment(11, 11, false), Segments[6]); +} + +TEST_F(CoverageMappingTest, uncovered_function) { + readProfCounts(); + + addCMR(Counter::getZero(), "file1", 1, 2, 3, 4); + loadCoverageMapping("func", 0x1234); + + CoverageData Data = LoadedCoverage->getCoverageForFile("file1"); + std::vector<CoverageSegment> Segments(Data.begin(), Data.end()); + ASSERT_EQ(2U, Segments.size()); + ASSERT_EQ(CoverageSegment(1, 2, 0, true), Segments[0]); + ASSERT_EQ(CoverageSegment(3, 4, false), Segments[1]); +} + +TEST_F(CoverageMappingTest, combine_regions) { + ProfileWriter.addFunctionCounts("func", 0x1234, {10, 20, 30}); + readProfCounts(); + + addCMR(Counter::getCounter(0), "file1", 1, 1, 9, 9); + addCMR(Counter::getCounter(1), "file1", 3, 3, 4, 4); + addCMR(Counter::getCounter(2), "file1", 3, 3, 4, 4); + loadCoverageMapping("func", 0x1234); + + CoverageData Data = LoadedCoverage->getCoverageForFile("file1"); + std::vector<CoverageSegment> Segments(Data.begin(), Data.end()); + ASSERT_EQ(4U, Segments.size()); + ASSERT_EQ(CoverageSegment(1, 1, 10, true), Segments[0]); + ASSERT_EQ(CoverageSegment(3, 3, 50, true), Segments[1]); + ASSERT_EQ(CoverageSegment(4, 4, 10, false), Segments[2]); + ASSERT_EQ(CoverageSegment(9, 9, false), Segments[3]); +} + +TEST_F(CoverageMappingTest, dont_combine_expansions) { + ProfileWriter.addFunctionCounts("func", 0x1234, {10, 20}); + readProfCounts(); + + addCMR(Counter::getCounter(0), "file1", 1, 1, 9, 9); + addCMR(Counter::getCounter(1), "file1", 3, 3, 4, 4); + addCMR(Counter::getCounter(1), "include1", 6, 6, 7, 7); + addExpansionCMR("file1", "include1", 3, 3, 4, 4); + loadCoverageMapping("func", 0x1234); + + CoverageData Data = LoadedCoverage->getCoverageForFile("file1"); + std::vector<CoverageSegment> Segments(Data.begin(), Data.end()); + ASSERT_EQ(4U, Segments.size()); + ASSERT_EQ(CoverageSegment(1, 1, 10, true), Segments[0]); + ASSERT_EQ(CoverageSegment(3, 3, 20, true), Segments[1]); + ASSERT_EQ(CoverageSegment(4, 4, 10, false), Segments[2]); + ASSERT_EQ(CoverageSegment(9, 9, false), Segments[3]); +} + +} // end anonymous namespace |