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modified the test to have a unique answer #156

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modified the test to have a unique answer #156

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282085a
modified the test to have a unique answer
IssamT Oct 31, 2017
73bac4f
minor update
IssamT Oct 31, 2017
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13 changes: 8 additions & 5 deletions test/contlinear.jl
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Original file line number Diff line number Diff line change
Expand Up @@ -782,14 +782,16 @@ end
function linear8test(solver::MOI.AbstractSolver; atol=Base.rtoldefault(Float64), rtol=Base.rtoldefault(Float64))
@testset "test infeasible problem" begin
# min x
# s.t. 2x+y <= -1
# s.t. 2x-3y <= -7
# y <= 2
# x,y >= 0
@test MOI.supportsproblem(solver, MOI.ScalarAffineFunction{Float64}, [(MOI.ScalarAffineFunction{Float64},MOI.GreaterThan{Float64}),(MOI.SingleVariable,MOI.GreaterThan{Float64})])

m = MOI.SolverInstance(solver)
x = MOI.addvariable!(m)
y = MOI.addvariable!(m)
c = MOI.addconstraint!(m, MOI.ScalarAffineFunction([x,y], [2.0,1.0], 0.0), MOI.LessThan(-1.0))
c1 = MOI.addconstraint!(m, MOI.ScalarAffineFunction([x,y], [2.0,-3.0], 0.0), MOI.LessThan(-7.0))
c2 = MOI.addconstraint!(m, MOI.ScalarAffineFunction([y], [1.0], 0.0), MOI.LessThan(2.0))
bndx = MOI.addconstraint!(m, MOI.SingleVariable(x), MOI.GreaterThan(0.0))
bndy = MOI.addconstraint!(m, MOI.SingleVariable(y), MOI.GreaterThan(0.0))
MOI.set!(m, MOI.ObjectiveFunction(), MOI.ScalarAffineFunction([x], [1.0], 0.0))
Expand All @@ -801,9 +803,10 @@ function linear8test(solver::MOI.AbstractSolver; atol=Base.rtoldefault(Float64),
# solver returned an infeasibility ray
@test MOI.get(m, MOI.TerminationStatus()) == MOI.Success
@test MOI.get(m, MOI.DualStatus()) == MOI.InfeasibilityCertificate
@test MOI.canget(m, MOI.ConstraintDual(), c)
cd = MOI.get(m, MOI.ConstraintDual(), c)
@test cd < -atol
@test MOI.canget(m, MOI.ConstraintDual(), c1)
cd1 = MOI.get(m, MOI.ConstraintDual(), c1)
cd2 = MOI.get(m, MOI.ConstraintDual(), c2)
@test cd2/cd1 ≈ 3 atol=atol
# TODO: farkas dual on bounds - see #127
# xd = MOI.get(m, MOI.ConstraintDual(), bndx)
# yd = MOI.get(m, MOI.ConstraintDual(), bndy)
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