4f381f6d07
* bump abseil to 20250814 * bump protobuf to v32.0 * cmake: add ccache auto support * backport flatzinc, math_opt and sat update
163 lines
6.7 KiB
C++
163 lines
6.7 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/math_opt/cpp/statistics.h"
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#include <limits>
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#include <optional>
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#include <ostream>
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#include <sstream>
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#include <string>
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#include <utility>
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#include "gtest/gtest.h"
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#include "ortools/base/gmock.h"
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#include "ortools/math_opt/cpp/model.h"
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namespace operations_research::math_opt {
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namespace {
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using ::testing::Optional;
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using ::testing::Pair;
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constexpr double kInf = std::numeric_limits<double>::infinity();
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std::string PrintToString(const ModelRanges& ranges) {
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std::ostringstream oss;
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oss << ranges;
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return oss.str();
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}
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TEST(ModelRangesTest, Printing) {
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EXPECT_EQ(PrintToString(ModelRanges{}),
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"Objective terms : no finite values\n"
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"Variable bounds : no finite values\n"
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"Linear constraints bounds : no finite values\n"
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"Linear constraints coeffs : no finite values");
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EXPECT_EQ(
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PrintToString(ModelRanges{
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.objective_terms = std::make_pair(2.12345e-99, 1.12345e3),
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.variable_bounds = std::make_pair(9.12345e-2, 1.12345e2),
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.linear_constraint_bounds = std::make_pair(2.12345e6, 5.12345e99),
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.linear_constraint_coefficients = std::make_pair(0.0, 0.0),
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}),
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"Objective terms : [2.12e-99 , 1.12e+03 ]\n"
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"Variable bounds : [9.12e-02 , 1.12e+02 ]\n"
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"Linear constraints bounds : [2.12e+06 , 5.12e+99 ]\n"
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"Linear constraints coeffs : [0.00e+00 , 0.00e+00 ]");
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EXPECT_EQ(
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PrintToString(ModelRanges{
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.objective_terms = std::make_pair(2.12345e-1, 1.12345e3),
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.variable_bounds = std::make_pair(9.12345e-2, 1.12345e2),
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.linear_constraint_bounds = std::make_pair(2.12345e6, 5.12345e99),
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.linear_constraint_coefficients = std::make_pair(0.0, 1.0e100),
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}),
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"Objective terms : [2.12e-01 , 1.12e+03 ]\n"
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"Variable bounds : [9.12e-02 , 1.12e+02 ]\n"
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"Linear constraints bounds : [2.12e+06 , 5.12e+99 ]\n"
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"Linear constraints coeffs : [0.00e+00 , 1.00e+100]");
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EXPECT_EQ(
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PrintToString(ModelRanges{
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.objective_terms = std::make_pair(2.12345e-100, 1.12345e3),
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.variable_bounds = std::make_pair(9.12345e-2, 1.12345e2),
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.linear_constraint_bounds = std::make_pair(2.12345e6, 5.12345e99),
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.linear_constraint_coefficients = std::make_pair(0.0, 0.0),
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}),
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"Objective terms : [2.12e-100, 1.12e+03 ]\n"
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"Variable bounds : [9.12e-02 , 1.12e+02 ]\n"
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"Linear constraints bounds : [2.12e+06 , 5.12e+99 ]\n"
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"Linear constraints coeffs : [0.00e+00 , 0.00e+00 ]");
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EXPECT_EQ(
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PrintToString(ModelRanges{
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.objective_terms = std::make_pair(2.12345e-100, 1.12345e3),
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.variable_bounds = std::make_pair(9.12345e-2, 1.12345e2),
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.linear_constraint_bounds = std::make_pair(2.12345e6, 5.12345e99),
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.linear_constraint_coefficients = std::make_pair(0.0, 1.0e100),
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}),
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"Objective terms : [2.12e-100, 1.12e+03 ]\n"
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"Variable bounds : [9.12e-02 , 1.12e+02 ]\n"
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"Linear constraints bounds : [2.12e+06 , 5.12e+99 ]\n"
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"Linear constraints coeffs : [0.00e+00 , 1.00e+100]");
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}
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TEST(ModelRangesTest, PrintingResetFlags) {
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const ModelRanges ranges = {
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.objective_terms = std::make_pair(2.12345e-100, 1.12345e3),
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.variable_bounds = std::make_pair(9.12345e-2, 1.12345e2),
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.linear_constraint_bounds = std::make_pair(2.12345e6, 5.12345e99),
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.linear_constraint_coefficients = std::make_pair(0.0, 1.0e100),
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};
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std::ostringstream oss;
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oss << ranges << '\n' << 1.23456789;
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EXPECT_EQ(oss.str(),
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"Objective terms : [2.12e-100, 1.12e+03 ]\n"
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"Variable bounds : [9.12e-02 , 1.12e+02 ]\n"
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"Linear constraints bounds : [2.12e+06 , 5.12e+99 ]\n"
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"Linear constraints coeffs : [0.00e+00 , 1.00e+100]\n"
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"1.23457");
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}
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TEST(ComputeModelRangesTest, Empty) {
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const ModelRanges ranges = ComputeModelRanges(Model("model"));
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EXPECT_EQ(ranges.objective_terms, std::nullopt);
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EXPECT_EQ(ranges.variable_bounds, std::nullopt);
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EXPECT_EQ(ranges.linear_constraint_bounds, std::nullopt);
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EXPECT_EQ(ranges.linear_constraint_coefficients, std::nullopt);
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}
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TEST(ComputeModelRangesTest, OnlyZeroAndInfiniteValues) {
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Model model("model");
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model.AddContinuousVariable(/*lower_bound=*/0.0, /*upper_bound=*/kInf);
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model.AddContinuousVariable(/*lower_bound=*/-kInf, /*upper_bound=*/0.0);
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model.AddContinuousVariable(/*lower_bound=*/-kInf, /*upper_bound=*/kInf);
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model.AddLinearConstraint(/*lower_bound=*/0.0, /*upper_bound=*/kInf);
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model.AddLinearConstraint(/*lower_bound=*/-kInf, /*upper_bound=*/0.0);
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model.AddLinearConstraint(/*lower_bound=*/-kInf, /*upper_bound=*/kInf);
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const ModelRanges ranges = ComputeModelRanges(model);
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EXPECT_EQ(ranges.objective_terms, std::nullopt);
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EXPECT_EQ(ranges.variable_bounds, std::nullopt);
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EXPECT_EQ(ranges.linear_constraint_bounds, std::nullopt);
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EXPECT_EQ(ranges.linear_constraint_coefficients, std::nullopt);
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}
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TEST(ComputeModelRangesTest, MixedValues) {
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Model model("model");
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const Variable x = model.AddContinuousVariable(/*lower_bound=*/0.0,
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/*upper_bound=*/0.0, "x");
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const Variable y = model.AddContinuousVariable(/*lower_bound=*/-kInf,
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/*upper_bound=*/1e-3, "y");
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const Variable z = model.AddContinuousVariable(/*lower_bound=*/-3e2,
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/*upper_bound=*/kInf, "z");
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model.Minimize(-5.0e4 * x + 1.0e-6 * z * x + 3.0 * y);
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model.AddLinearConstraint(0.0 <= 1.25e-3 * y - 4.5e3 * x, "c");
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model.AddLinearConstraint(/*lower_bound=*/-kInf, /*upper_bound=*/3e4);
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model.AddLinearConstraint(-1e-5 <= 2.5e-3 * y <= 0.0);
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const ModelRanges ranges = ComputeModelRanges(model);
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EXPECT_THAT(ranges.objective_terms, Optional(Pair(1.0e-6, 5.0e4)));
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EXPECT_THAT(ranges.variable_bounds, Optional(Pair(1e-3, 3e2)));
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EXPECT_THAT(ranges.linear_constraint_bounds, Optional(Pair(1e-5, 3e4)));
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EXPECT_THAT(ranges.linear_constraint_coefficients,
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Optional(Pair(1.25e-3, 4.5e3)));
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}
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} // namespace
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} // namespace operations_research::math_opt
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