145 lines
4.4 KiB
C++
145 lines
4.4 KiB
C++
// Copyright 2010-2024 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/linear_model.h"
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#include <vector>
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#include "gtest/gtest.h"
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#include "ortools/base/gmock.h"
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#include "ortools/base/parse_test_proto.h"
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#include "ortools/sat/cp_model.pb.h"
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#include "ortools/sat/cp_model_presolve.h"
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#include "ortools/sat/model.h"
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#include "ortools/sat/presolve_context.h"
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#include "ortools/sat/sat_parameters.pb.h"
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#include "ortools/util/logging.h"
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namespace operations_research {
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namespace sat {
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namespace {
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using ::google::protobuf::contrib::parse_proto::ParseTestProto;
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using ::testing::EqualsProto;
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TEST(LinearModelTest, DetectFullEncoding) {
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const CpModelProto cp_model = ParseTestProto(R"pb(
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variables { domain: [ 0, 3 ] }
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variables { domain: [ 0, 0, 5, 5, 10, 10 ] }
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variables { domain: [ 0, 0 ] }
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variables { domain: [ 5, 5 ] }
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variables { domain: [ 10, 10 ] }
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variables { domain: [ 0, 2 ] }
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variables { domain: [ 0, 1 ] }
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variables { domain: [ 0, 1 ] }
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variables { domain: [ 0, 1 ] }
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variables { domain: [ 0, 1 ] }
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variables { domain: [ 0, 1 ] }
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constraints {
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enforcement_literal: 6
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linear { vars: 5 coeffs: 1 domain: 0 domain: 0 }
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}
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constraints {
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enforcement_literal: -7
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linear { vars: 5 coeffs: 1 domain: 1 domain: 2 }
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}
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constraints {
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exactly_one { literals: 7 literals: 8 literals: 9 literals: 10 }
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}
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constraints {
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enforcement_literal: 7
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linear { vars: 0 coeffs: 1 domain: 0 domain: 0 }
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}
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constraints {
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enforcement_literal: -8
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linear { vars: 0 coeffs: 1 domain: 1 domain: 3 }
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}
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constraints {
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enforcement_literal: 7
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linear { vars: 5 coeffs: 1 domain: 1 domain: 1 }
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}
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constraints {
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enforcement_literal: -8
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linear { vars: 5 coeffs: 1 domain: 0 domain: 0 domain: 2 domain: 2 }
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}
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constraints {
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enforcement_literal: 8
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linear { vars: 0 coeffs: 1 domain: 1 domain: 1 }
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}
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constraints {
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enforcement_literal: -9
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linear { vars: 0 coeffs: 1 domain: 0 domain: 0 domain: 2 domain: 3 }
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}
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constraints {
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enforcement_literal: 9
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linear { vars: 0 coeffs: 1 domain: 2 domain: 2 }
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}
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constraints {
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enforcement_literal: -10
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linear { vars: 0 coeffs: 1 domain: 0 domain: 1 domain: 3 domain: 3 }
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}
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constraints {
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enforcement_literal: 9
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linear { vars: 5 coeffs: 1 domain: 2 domain: 2 }
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}
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constraints {
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enforcement_literal: -10
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linear { vars: 5 coeffs: 1 domain: 0 domain: 1 }
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}
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constraints {
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enforcement_literal: 10
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linear { vars: 0 coeffs: 1 domain: 3 domain: 3 }
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}
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constraints {
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enforcement_literal: -11
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linear { vars: 0 coeffs: 1 domain: 0 domain: 2 }
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}
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constraints { exactly_one { literals: -7 literals: 8 literals: 10 } }
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constraints {
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linear { vars: 1 vars: 5 coeffs: 1 coeffs: -5 domain: 0 domain: 0 }
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}
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)pb");
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LinearModel linear_model(cp_model);
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int num_ignored = 0;
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for (const bool is_ignored : linear_model.ignored_constraints()) {
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if (is_ignored) num_ignored++;
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}
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EXPECT_EQ(num_ignored, 14);
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ASSERT_EQ(linear_model.additional_constraints().size(), 3);
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const ConstraintProto ct0 = ParseTestProto(R"pb(
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linear {
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vars: [ 0, 8, 9, 10 ]
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coeffs: [ -1, 1, 2, 3 ]
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domain: [ 0, 0 ]
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}
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)pb");
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const ConstraintProto ct1 = ParseTestProto(R"pb(
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linear {
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vars: [ 5, 7, 9 ]
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coeffs: [ -1, 1, 2 ]
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domain: [ 0, 0 ]
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}
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)pb");
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const ConstraintProto ct2 = ParseTestProto(R"pb(
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exactly_one { literals: [ 6, 7, 9 ] }
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)pb");
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EXPECT_THAT(ct0, EqualsProto(linear_model.additional_constraints()[0]));
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EXPECT_THAT(ct1, EqualsProto(linear_model.additional_constraints()[1]));
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EXPECT_THAT(ct2, EqualsProto(linear_model.additional_constraints()[2]));
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}
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} // namespace
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} // namespace sat
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} // namespace operations_research
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