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variable.jl
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variable.jl
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# Copyright 2016, Iain Dunning, Joey Huchette, Miles Lubin, and contributors
# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at http://mozilla.org/MPL/2.0/.
#############################################################################
# JuMP
# An algebraic modelling langauge for Julia
# See http://github.com/JuliaOpt/JuMP.jl
#############################################################################
# test/variable.jl
# Testing for Variable
#############################################################################
using JuMP, FactCheck
facts("[variable] constructors") do
# Constructors
mcon = Model()
@variable(mcon, nobounds)
@variable(mcon, lbonly >= 0)
@variable(mcon, ubonly <= 1)
@variable(mcon, 0 <= bothb <= 1)
@variable(mcon, 0 <= onerange[-5:5] <= 10)
@variable(mcon, onerangeub[-7:1] <= 10, Int)
@variable(mcon, manyrangelb[0:1,10:20,1:1] >= 2)
@fact getlowerbound(manyrangelb[0,15,1]) --> 2
s = ["Green","Blue"]
@variable(mcon, x[i=-10:10,s] <= 5.5, Int, start=i+1)
@fact getupperbound(x[-4,"Green"]) --> 5.5
@fact getvalue(x[-3,"Blue"]) --> -2
@fact isequal(getvariable(mcon, :lbonly),lbonly) --> true
@fact isequal(getvariable(mcon, :ubonly),ubonly) --> true
@fact isequal(getvariable(mcon, :onerangeub)[-7],onerangeub[-7]) --> true
@variable(mcon, lbonly)
@fact_throws ErrorException getvariable(mcon, :lbonly)
@fact_throws ErrorException getvariable(mcon, :foo)
d = Dict()
@variable(mcon, d["bar"][1:10] == 1)
@fact getvalue(d["bar"][1]) --> 1
@fact typeof(zero(nobounds)) --> AffExpr
@fact typeof(one(nobounds)) --> AffExpr
end
facts("[variable] get and set bounds") do
m = Model()
@variable(m, 0 <= x <= 2)
@fact getlowerbound(x) --> 0
@fact getupperbound(x) --> 2
setlowerbound(x, 1)
@fact getlowerbound(x) --> 1
setupperbound(x, 3)
@fact getupperbound(x) --> 3
@variable(m, y, Bin)
@fact getlowerbound(y) --> 0
@fact getupperbound(y) --> 1
@variable(m, 0 <= y <= 1, Bin)
@fact getlowerbound(y) --> 0
@fact getupperbound(y) --> 1
@variable(m, fixedvar == 2)
@fact getvalue(fixedvar) --> 2
@fact getlowerbound(fixedvar) --> 2
@fact getupperbound(fixedvar) --> 2
setvalue(fixedvar, 5)
@fact getvalue(fixedvar) --> 5
@fact getlowerbound(fixedvar) --> 5
@fact getupperbound(fixedvar) --> 5
end
facts("[variable] get and set values") do
m = Model()
@variable(m, x[1:3])
x0 = collect(1:3)
setvalue(x, x0)
@fact getvalue(x) --> x0
@fact getvalue([x[1],x[2],x[3]]) --> x0
@variable(m, y[1:3,1:2])
@fact_throws DimensionMismatch setvalue(y, collect(1:6))
end
facts("[variable] get and set category") do
m = Model()
@variable(m, x[1:3])
setcategory(x[2], :Int)
@fact getcategory(x[3]) --> :Cont
@fact getcategory(x[2]) --> :Int
end
facts("[variable] repeated elements in index set (issue #199)") do
repeatmod = Model()
s = [:x,:x,:y]
@variable(repeatmod, x[s])
@fact MathProgBase.numvar(repeatmod) --> 3
end
facts("[variable] condition in indexing") do
fa = repl[:for_all]
inset, dots = repl[:in], repl[:dots]
condmod = Model()
@variable(condmod, x[i=1:10; iseven(i)])
@variable(condmod, y[j=1:10,k=3:2:9; isodd(j+k) && k <= 8])
@fact length(x.tupledict) --> 5
@fact length(y.tupledict) --> 15
@fact string(condmod) --> "Min 0\nSubject to\n x[i] free $fa i $inset {1,2,$dots,9,10} s.t. iseven(i)\n y[j,k] free $fa j $inset {1,2,$dots,9,10}, k $inset {3,5,7,9} s.t. isodd(j + k) and k <= 8\n"
end
facts("[variable] @variable returning Array{Variable}") do
m = Model()
@variable(m, x[1:3,1:4,1:2])
@variable(m, y[1:0])
@variable(m, z[1:4])
@fact typeof(x) --> Array{Variable,3}
@fact typeof(y) --> Array{Variable,1}
@fact typeof(z) --> Array{Variable,1}
@fact typeof(getvalue(x)) --> Array{Float64,3}
@fact typeof(getvalue(y)) --> Array{Float64,1}
@fact typeof(getvalue(z)) --> Array{Float64,1}
end
facts("[variable] getvalue on empty things") do
m = Model()
@variable(m, x[1:4, 1:0,1:3]) # Array{Variable}
@variable(m, y[1:4, 2:1,1:3]) # JuMPArray
@variable(m, z[1:4,Set(),1:3]) # JuMPDict
@fact getvalue(x) --> Array(Float64, 4, 0, 3)
@fact typeof(getvalue(y)) <: JuMP.JuMPArray{Float64} --> true
@fact JuMP.size(getvalue(y)) --> (4,0,3)
@fact typeof(getvalue(z)) --> JuMP.JuMPArray{Float64,3,Tuple{UnitRange{Int},Set{Any},UnitRange{Int}}}
@fact length(getvalue(z)) --> 0
end
# Slices three-dimensional JuMPContainer x[I,J,K]
# I,J,K can be singletons, ranges, colons, etc.
function sliceof(x, I, J, K)
y = Array(Variable, length(I), length(J), length(K))
ii = 1
jj = 1
kk = 1
for i in I
for j in J
for k in K
y[ii,jj,kk] = x[i,j,k]
kk += 1
end
jj += 1
kk = 1
end
ii += 1
jj = 1
end
if VERSION >= v"0.5.0-dev+1195"
idx = [length(I)==1, length(J)==1, length(K)==1]
else
idx = [false, false, length(K)==1]
if idx[3] == true && length(J) == 1
idx[2] = true
end
end
squeeze(y, tuple(find(idx)...))
end
facts("[variable] Slices of JuMPArray (#684)") do
m = Model()
@variable(m, x[1:3, 1:4,1:2])
@variable(m, y[1:3,-1:2,3:4])
@variable(m, z[1:3,-1:2:4,3:4])
@variable(m, w[1:3,-1:2,[:red,"blue"]])
@fact x[:] --> vec(sliceof(x, 1:3, 1:4, 1:2))
@fact x[:,:,:] --> sliceof(x, 1:3, 1:4, 1:2)
@fact x[1,:,:] --> sliceof(x, 1, 1:4, 1:2)
@fact x[1,:,2] --> sliceof(x, 1, 1:4, 2)
@fact_throws x[1,:,3]
@fact x[1:2,:,:] --> sliceof(x, 1:2, 1:4, 1:2)
@fact x[1:2,:,2] --> sliceof(x, 1:2, 1:4, 2)
@fact x[1:2,:,1:2] --> sliceof(x, 1:2, 1:4, 1:2)
@fact_throws x[1:2,:,1:3]
@fact y[:] --> vec(sliceof(y, 1:3, -1:2, 3:4))
@fact y[:,:,:] --> sliceof(y, 1:3, -1:2, 3:4)
@fact y[1,:,:] --> sliceof(y, 1, -1:2, 3:4)
@fact y[1,:,4] --> sliceof(y, 1, -1:2, 4)
@fact_throws y[1,:,5]
@fact y[1:2,:,:] --> sliceof(y, 1:2, -1:2, 3:4)
@fact y[1:2,:,4] --> sliceof(y, 1:2, -1:2, 4)
@fact y[1:2,:,3:4] --> sliceof(y, 1:2, -1:2, 3:4)
@fact_throws y[1:2,:,1:3]
@fact z[:] --> vec(sliceof(z, 1:3, -1:2:4, 3:4))
@fact z[:,1,:] --> sliceof(z, 1:3, 1, 3:4)
@fact z[1,1,:] --> sliceof(z, 1, 1, 3:4)
@fact_throws z[:,5,3]
@fact z[1:2,1,:] --> sliceof(z, 1:2, 1, 3:4)
@fact z[1:2,1,4] --> sliceof(z, 1:2, 1, 4)
@fact z[1:2,1,3:4] --> sliceof(z, 1:2, 1, 3:4)
@fact_throws z[1:2,1,1:3]
@fact w[:] --> vec(sliceof(w, 1:3, -1:2, [:red,"blue"]))
@fact_throws w[:,:,:]
@fact w[1,:,"blue"] --> sliceof(w, 1, -1:2, ["blue"])
@fact w[1,:,:red] --> sliceof(w, 1, -1:2, [:red])
@fact_throws w[1,:,"green"]
@fact w[1:2,:,"blue"] --> sliceof(w, 1:2, -1:2, ["blue"])
@fact_throws w[1:2,:,[:red,"blue"]]
end
facts("[variable] Can't use end for indexing a JuMPContainer") do
m = Model()
@variable(m, x[0:2,1:4])
@variable(m, y[i=1:4,j=1:4;true])
@variable(m, z[0:2])
@fact_throws x[end,1]
@fact_throws x[end-1]
@fact_throws x[0,end-1]
@fact_throws y[end,end-1]
@fact_throws y[end,1]
@fact_throws z[end]
end