--- /dev/null
+//===- 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/Support/raw_ostream.h"
+#include "gtest/gtest.h"
+
+using namespace llvm;
+using namespace coverage;
+
+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();
+}
+}
+}
+
+namespace {
+
+static std::string writeCoverage(MutableArrayRef<CounterMappingRegion> Regions,
+ int NumFiles) {
+ SmallVector<unsigned, 8> FileIDs;
+ for (int I = 0; I < NumFiles; ++I)
+ FileIDs.push_back(I);
+
+ std::string Coverage;
+ llvm::raw_string_ostream OS(Coverage);
+ CoverageMappingWriter(FileIDs, None, Regions).write(OS);
+ OS.flush();
+
+ return Coverage;
+}
+
+static std::vector<CounterMappingRegion>
+readCoverageRegions(std::string Coverage, int NumFiles) {
+ SmallVector<std::string, 8> Filenames;
+ SmallVector<StringRef, 8> FilenameRefs;
+ for (int I = 0; I < NumFiles; ++I) {
+ Filenames.push_back("file" + std::to_string(I));
+ FilenameRefs.push_back(Filenames.back());
+ }
+
+ std::vector<StringRef> FuncFiles;
+ std::vector<CounterExpression> Expressions;
+ std::vector<CounterMappingRegion> Regions;
+ RawCoverageMappingReader Reader(Coverage, FilenameRefs, FuncFiles,
+ Expressions, Regions);
+ if (Reader.read())
+ // ASSERT doesn't work here, we'll just return an empty vector.
+ Regions.clear();
+ return Regions;
+}
+
+TEST(CoverageMappingTest, basic_write_read) {
+ int NumFiles = 2;
+ CounterMappingRegion InputRegions[] = {
+ CounterMappingRegion::makeRegion(Counter::getCounter(0), 0, 1, 1, 1, 1),
+ CounterMappingRegion::makeRegion(Counter::getCounter(1), 0, 2, 1, 2, 2),
+ CounterMappingRegion::makeRegion(Counter::getZero(), 0, 3, 1, 3, 4),
+ CounterMappingRegion::makeRegion(Counter::getCounter(2), 0, 4, 1, 4, 8),
+ CounterMappingRegion::makeRegion(Counter::getCounter(3), 1, 1, 2, 3, 4),
+ };
+ std::string Coverage = writeCoverage(InputRegions, NumFiles);
+ std::vector<CounterMappingRegion> OutputRegions =
+ readCoverageRegions(Coverage, NumFiles);
+ ASSERT_FALSE(OutputRegions.empty());
+
+ size_t N = makeArrayRef(InputRegions).size();
+ ASSERT_EQ(N, OutputRegions.size());
+ for (size_t I = 0; I < N; ++I) {
+ ASSERT_EQ(InputRegions[I].Count, OutputRegions[I].Count);
+ ASSERT_EQ(InputRegions[I].FileID, OutputRegions[I].FileID);
+ ASSERT_EQ(InputRegions[I].startLoc(), OutputRegions[I].startLoc());
+ ASSERT_EQ(InputRegions[I].endLoc(), OutputRegions[I].endLoc());
+ ASSERT_EQ(InputRegions[I].Kind, OutputRegions[I].Kind);
+ }
+}
+
+TEST(CoverageMappingTest, expansion_gets_first_counter) {
+ int NumFiles = 2;
+ CounterMappingRegion InputRegions[] = {
+ CounterMappingRegion::makeRegion(Counter::getCounter(1), 0, 10, 1, 10, 2),
+ // This starts earlier in file 0, so the expansion should get its counter.
+ CounterMappingRegion::makeRegion(Counter::getCounter(2), 0, 1, 1, 20, 1),
+ CounterMappingRegion::makeExpansion(1, 0, 3, 3, 3, 3),
+ };
+ std::string Coverage = writeCoverage(InputRegions, NumFiles);
+ std::vector<CounterMappingRegion> OutputRegions =
+ readCoverageRegions(Coverage, NumFiles);
+ ASSERT_FALSE(OutputRegions.empty());
+
+ ASSERT_EQ(CounterMappingRegion::ExpansionRegion, OutputRegions[2].Kind);
+ ASSERT_EQ(Counter::getCounter(2), OutputRegions[2].Count);
+ ASSERT_EQ(3U, OutputRegions[2].LineStart);
+}
+
+
+} // end anonymous namespace