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GurobiSolver: Implement relax/enforce constraint

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This commit is contained in:
Alinson S. Xavier
2021-04-15 15:22:12 -05:00
parent 4dd4ef52bd
commit 0ba8cc16fd
7 changed files with 96 additions and 16 deletions
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4
miplearn/solvers/tests/__init__.py
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@@ -189,7 +189,7 @@ def run_basic_usage_tests(solver: InternalSolver) -> None:
# Build a new constraint
cut = Constraint(lhs={"x[0]": 1.0}, sense="<", rhs=0.0)
assert not solver.is_constraint_satisfied(cut)
assert not solver.is_constraint_satisfied_old(cut)
# Add new constraint and verify that it is listed. Modifying the model should
# also clear the current solution.
@@ -215,7 +215,7 @@ def run_basic_usage_tests(solver: InternalSolver) -> None:
# Re-solve MIP and verify that constraint affects the solution
stats = solver.solve()
assert_equals(stats.mip_lower_bound, 1030.0)
assert solver.is_constraint_satisfied(cut)
assert solver.is_constraint_satisfied_old(cut)
# Remove the new constraint
solver.remove_constraint("cut")