1 //===- unittest/ProfileData/CoverageMappingTest.cpp -------------------------=//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 #include "llvm/ProfileData/CoverageMapping.h"
11 #include "llvm/ProfileData/CoverageMappingReader.h"
12 #include "llvm/ProfileData/CoverageMappingWriter.h"
13 #include "llvm/Support/raw_ostream.h"
14 #include "gtest/gtest.h"
17 using namespace coverage;
21 void PrintTo(const Counter &C, ::std::ostream *os) {
24 else if (C.isExpression())
25 *os << "Expression " << C.getExpressionID();
27 *os << "Counter " << C.getCounterID();
34 static std::string writeCoverage(MutableArrayRef<CounterMappingRegion> Regions,
36 SmallVector<unsigned, 8> FileIDs;
37 for (int I = 0; I < NumFiles; ++I)
41 llvm::raw_string_ostream OS(Coverage);
42 CoverageMappingWriter(FileIDs, None, Regions).write(OS);
48 static std::vector<CounterMappingRegion>
49 readCoverageRegions(std::string Coverage, int NumFiles) {
50 SmallVector<std::string, 8> Filenames;
51 SmallVector<StringRef, 8> FilenameRefs;
52 for (int I = 0; I < NumFiles; ++I) {
53 Filenames.push_back("file" + std::to_string(I));
54 FilenameRefs.push_back(Filenames.back());
57 std::vector<StringRef> FuncFiles;
58 std::vector<CounterExpression> Expressions;
59 std::vector<CounterMappingRegion> Regions;
60 RawCoverageMappingReader Reader(Coverage, FilenameRefs, FuncFiles,
61 Expressions, Regions);
63 // ASSERT doesn't work here, we'll just return an empty vector.
68 TEST(CoverageMappingTest, basic_write_read) {
70 CounterMappingRegion InputRegions[] = {
71 CounterMappingRegion::makeRegion(Counter::getCounter(0), 0, 1, 1, 1, 1),
72 CounterMappingRegion::makeRegion(Counter::getCounter(1), 0, 2, 1, 2, 2),
73 CounterMappingRegion::makeRegion(Counter::getZero(), 0, 3, 1, 3, 4),
74 CounterMappingRegion::makeRegion(Counter::getCounter(2), 0, 4, 1, 4, 8),
75 CounterMappingRegion::makeRegion(Counter::getCounter(3), 1, 1, 2, 3, 4),
77 std::string Coverage = writeCoverage(InputRegions, NumFiles);
78 std::vector<CounterMappingRegion> OutputRegions =
79 readCoverageRegions(Coverage, NumFiles);
80 ASSERT_FALSE(OutputRegions.empty());
82 size_t N = makeArrayRef(InputRegions).size();
83 ASSERT_EQ(N, OutputRegions.size());
84 for (size_t I = 0; I < N; ++I) {
85 ASSERT_EQ(InputRegions[I].Count, OutputRegions[I].Count);
86 ASSERT_EQ(InputRegions[I].FileID, OutputRegions[I].FileID);
87 ASSERT_EQ(InputRegions[I].startLoc(), OutputRegions[I].startLoc());
88 ASSERT_EQ(InputRegions[I].endLoc(), OutputRegions[I].endLoc());
89 ASSERT_EQ(InputRegions[I].Kind, OutputRegions[I].Kind);
93 TEST(CoverageMappingTest, expansion_gets_first_counter) {
95 CounterMappingRegion InputRegions[] = {
96 CounterMappingRegion::makeRegion(Counter::getCounter(1), 0, 10, 1, 10, 2),
97 // This starts earlier in file 0, so the expansion should get its counter.
98 CounterMappingRegion::makeRegion(Counter::getCounter(2), 0, 1, 1, 20, 1),
99 CounterMappingRegion::makeExpansion(1, 0, 3, 3, 3, 3),
101 std::string Coverage = writeCoverage(InputRegions, NumFiles);
102 std::vector<CounterMappingRegion> OutputRegions =
103 readCoverageRegions(Coverage, NumFiles);
104 ASSERT_FALSE(OutputRegions.empty());
106 ASSERT_EQ(CounterMappingRegion::ExpansionRegion, OutputRegions[2].Kind);
107 ASSERT_EQ(Counter::getCounter(2), OutputRegions[2].Count);
108 ASSERT_EQ(3U, OutputRegions[2].LineStart);
112 } // end anonymous namespace