/3rd_party/llvm/unittests/ADT/DeltaAlgorithmTest.cpp
https://code.google.com/p/softart/ · C++ · 100 lines · 64 code · 17 blank · 19 comment · 8 complexity · 1ea32f051ab746d061714258dea73703 MD5 · raw file
- //===- llvm/unittest/ADT/DeltaAlgorithmTest.cpp ---------------------------===//
- //
- // The LLVM Compiler Infrastructure
- //
- // This file is distributed under the University of Illinois Open Source
- // License. See LICENSE.TXT for details.
- //
- //===----------------------------------------------------------------------===//
- #include "gtest/gtest.h"
- #include "llvm/ADT/DeltaAlgorithm.h"
- #include <algorithm>
- #include <cstdarg>
- using namespace llvm;
- namespace std {
- std::ostream &operator<<(std::ostream &OS,
- const std::set<unsigned> &S) {
- OS << "{";
- for (std::set<unsigned>::const_iterator it = S.begin(),
- ie = S.end(); it != ie; ++it) {
- if (it != S.begin())
- OS << ",";
- OS << *it;
- }
- OS << "}";
- return OS;
- }
- }
- namespace {
- class FixedDeltaAlgorithm : public DeltaAlgorithm {
- changeset_ty FailingSet;
- unsigned NumTests;
- protected:
- virtual bool ExecuteOneTest(const changeset_ty &Changes) {
- ++NumTests;
- return std::includes(Changes.begin(), Changes.end(),
- FailingSet.begin(), FailingSet.end());
- }
- public:
- FixedDeltaAlgorithm(const changeset_ty &_FailingSet)
- : FailingSet(_FailingSet),
- NumTests(0) {}
- unsigned getNumTests() const { return NumTests; }
- };
- std::set<unsigned> fixed_set(unsigned N, ...) {
- std::set<unsigned> S;
- va_list ap;
- va_start(ap, N);
- for (unsigned i = 0; i != N; ++i)
- S.insert(va_arg(ap, unsigned));
- va_end(ap);
- return S;
- }
- std::set<unsigned> range(unsigned Start, unsigned End) {
- std::set<unsigned> S;
- while (Start != End)
- S.insert(Start++);
- return S;
- }
- std::set<unsigned> range(unsigned N) {
- return range(0, N);
- }
- TEST(DeltaAlgorithmTest, Basic) {
- // P = {3,5,7} \in S
- // [0, 20) should minimize to {3,5,7} in a reasonable number of tests.
- std::set<unsigned> Fails = fixed_set(3, 3, 5, 7);
- FixedDeltaAlgorithm FDA(Fails);
- EXPECT_EQ(fixed_set(3, 3, 5, 7), FDA.Run(range(20)));
- EXPECT_GE(33U, FDA.getNumTests());
- // P = {3,5,7} \in S
- // [10, 20) should minimize to [10,20)
- EXPECT_EQ(range(10,20), FDA.Run(range(10,20)));
- // P = [0,4) \in S
- // [0, 4) should minimize to [0,4) in 11 tests.
- //
- // 11 = |{ {},
- // {0}, {1}, {2}, {3},
- // {1, 2, 3}, {0, 2, 3}, {0, 1, 3}, {0, 1, 2},
- // {0, 1}, {2, 3} }|
- FDA = FixedDeltaAlgorithm(range(10));
- EXPECT_EQ(range(4), FDA.Run(range(4)));
- EXPECT_EQ(11U, FDA.getNumTests());
- }
- }