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model builder: add clear_terms API; add enforced linear constraint in java + minimal test

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Laurent Perron
2023-11-05 12:41:22 +01:00
parent 1a610bd7ef
commit ce9f1ed6d2
8 changed files with 252 additions and 19 deletions
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27
ortools/linear_solver/java/ModelBuilderTest.java
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@@ -27,9 +27,28 @@ public final class ModelBuilderTest {
}
@Test
public void runMinimalLinearExample_ok() {
public void testEnforcedLinearApi() {
ModelBuilder model = new ModelBuilder();
model.setName("minimal_linear_example");
model.setName("minimal enforced linear test");
double infinity = Double.POSITIVE_INFINITY;
Variable x = model.newNumVar(0.0, infinity, "x");
Variable y = model.newNumVar(0.0, infinity, "y");
Variable z = model.newBoolVar("z");
assertThat(model.numVariables()).isEqualTo(3);
EnforcedLinearConstraint c0 = model.addEnforcedGreaterOrEqual(
LinearExpr.newBuilder().add(x).addTerm(y, 2.0), 10.0, z, false);
assertThat(c0.getLowerBound()).isEqualTo(10.0);
assertThat(c0.getIndicatorVariable().getIndex()).isEqualTo(z.getIndex());
assertThat(c0.getIndicatorValue()).isFalse();
}
@Test
public void runMinimalLinearExample_ok() {
final String name = "minimal_linear_example";
ModelBuilder model = new ModelBuilder();
model.setName(name);
double infinity = Double.POSITIVE_INFINITY;
Variable x1 = model.newNumVar(0.0, infinity, "x1");
Variable x2 = model.newNumVar(0.0, infinity, "x2");
@@ -88,8 +107,8 @@ public final class ModelBuilderTest {
assertThat(solver.getActivity(c1)).isWithin(1e-5).of(600.0);
assertThat(solver.getActivity(c2)).isWithin(1e-5).of(200.0);
assertThat(model.exportToLpString(false)).contains("minimal_linear_example");
assertThat(model.exportToMpsString(false)).contains("minimal_linear_example");
assertThat(model.exportToLpString(false)).contains(name);
assertThat(model.exportToMpsString(false)).contains(name);
}
@Test