Fix tests for Julia v1.4-rc1

.travis.yml

@@ -9,6 +9,7 @@ julia:
   - 1.1
   - 1.2
   - 1.3
+  - 1.4
 notifications:
   email: false
 git:

src/Utilities/functions.jl

@@ -1542,6 +1542,16 @@ end
 function Base.:*(f::Union{MOI.SingleVariable, MOI.VectorOfVariables}, g::Number)
     return operate(*, typeof(g), f, g)
 end
+# Used by sparse matrix multiplication after
+# https://github.com/JuliaLang/julia/pull/33205
+function Base.:*(f::TypedLike, g::Bool)
+    if g
+        return MA.copy_if_mutable(f)
+    else
+        return zero(typeof(f))
+    end
+end
+Base.:*(f::Bool, g::TypedLike) = g * f
 
 function Base.:^(func::MOI.ScalarAffineFunction{T}, p::Integer) where T
     if iszero(p)

test/Bridges/Variable/vectorize.jl

@@ -115,7 +115,7 @@ end
 
     @testset "MultirowChange" begin
         change = MOI.MultirowChange(y, [(3, 0.0)])
-        message = "The change MathOptInterface.MultirowChange{Float64}(MathOptInterface.VariableIndex(-1), Tuple{Int64,Float64}[(3, 0.0)])" *
+        message = "The change $change" *
             " contains variables bridged into a function with nonzero constant."
         err = MOI.ModifyConstraintNotAllowed(cis[1], change, message)
         @test_throws err MOI.modify(bridged_mock, cis[1], change)

test/Utilities/copy.jl

@@ -22,7 +22,11 @@ end
     map = MOIU.IndexMap(Dict(x => y), Dict(cx => cy))
     @test length(map) == 2
     # `x=>y` in Julia <= 1.1 and `x => y` in Julia >= 1.2
-    x_y = string(Dict(x => y))[6:end-1]
+    if VERSION < v"1.2"
+        x_y = string(x) *  "=>" * string(y)
+    else
+        x_y = string(x => y)
+    end
     compare_without_moi(sprint(show, map), "Utilities.IndexMap($x_y,Pair{ConstraintIndex,ConstraintIndex}($cx, $cy))")
 end