c34026b101
note: done using ```sh git grep -l "2010-2024 Google" | xargs sed -i 's/2010-2024 Google/2010-2025 Google/' ```
94 lines
2.6 KiB
C++
94 lines
2.6 KiB
C++
// Copyright 2010-2025 Google LLC
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include "ortools/sat/feasibility_jump.h"
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#include <cstdint>
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#include <utility>
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#include "gtest/gtest.h"
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namespace operations_research::sat {
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namespace {
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TEST(JumpTableTest, TestCachesCalls) {
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int num_calls = 0;
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JumpTable jumps;
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jumps.SetComputeFunction(
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[&](int) { return std::make_pair(++num_calls, -1.0); });
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jumps.RecomputeAll(1);
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EXPECT_EQ(jumps.GetJump(0), std::make_pair(int64_t{1}, -1.0));
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EXPECT_EQ(jumps.GetJump(0), std::make_pair(int64_t{1}, -1.0));
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EXPECT_EQ(num_calls, 1);
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}
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TEST(JumpTableTest, TestNeedsRecomputationOneVar) {
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int num_calls = 0;
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JumpTable jumps;
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jumps.SetComputeFunction(
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[&](int) { return std::make_pair(++num_calls, -1.0); });
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jumps.RecomputeAll(1);
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jumps.GetJump(0);
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jumps.Recompute(0);
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EXPECT_EQ(jumps.GetJump(0), std::make_pair(int64_t{2}, -1.0));
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EXPECT_EQ(num_calls, 2);
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}
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TEST(JumpTableTest, TestNeedsRecomputationMultiVar) {
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int num_calls = 0;
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JumpTable jumps;
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jumps.SetComputeFunction(
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[&](int v) { return std::make_pair(++num_calls, v); });
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jumps.RecomputeAll(2);
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jumps.GetJump(0);
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jumps.GetJump(1);
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jumps.Recompute(0);
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EXPECT_EQ(jumps.GetJump(0), std::make_pair(int64_t{3}, 0.0));
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EXPECT_EQ(jumps.GetJump(1), std::make_pair(int64_t{2}, 1.0));
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EXPECT_EQ(num_calls, 3);
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}
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TEST(JumpTableTest, TestVarsNeedingRecomputePossiblyGood) {
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int num_calls = 0;
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JumpTable jumps;
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jumps.SetComputeFunction(
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[&](int) { return std::make_pair(++num_calls, 1.0); });
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jumps.RecomputeAll(1);
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EXPECT_TRUE(jumps.NeedRecomputation(0));
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EXPECT_EQ(num_calls, 0);
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}
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TEST(JumpTableTest, TestSetJump) {
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int num_calls = 0;
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JumpTable jumps;
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jumps.SetComputeFunction(
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[&](int) { return std::make_pair(++num_calls, -1.0); });
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jumps.RecomputeAll(1);
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jumps.SetJump(0, 1, 1.0);
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EXPECT_FALSE(jumps.NeedRecomputation(0));
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EXPECT_GE(jumps.Score(0), 0);
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EXPECT_EQ(jumps.GetJump(0), std::make_pair(int64_t{1}, 1.0));
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EXPECT_EQ(num_calls, 0);
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}
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} // namespace
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} // namespace operations_research::sat
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