test: add license mention for tests derived from Ipopt

Author: SebastianM-C

lib/OptimizationIpopt/test/additional_tests.jl

@@ -3,6 +3,10 @@ using Zygote
 using Test
 using LinearAlgebra
 
+# These tests were automatically translated from the Ipopt tests, https://github.com/coin-or/Ipopt
+# licensed under Eclipse Public License - v 2.0
+# https://github.com/coin-or/Ipopt/blob/stable/3.14/LICENSE
+
 @testset "Additional Ipopt Examples" begin
     @testset "Simple 2D Example (MyNLP)" begin
         # Based on MyNLP example from Ipopt

lib/OptimizationIpopt/test/advanced_features.jl

@@ -4,6 +4,10 @@ using Test
 using LinearAlgebra
 using SparseArrays
 
+# These tests were automatically translated from the Ipopt tests, https://github.com/coin-or/Ipopt
+# licensed under Eclipse Public License - v 2.0
+# https://github.com/coin-or/Ipopt/blob/stable/3.14/LICENSE
+
 @testset "Advanced Ipopt Features" begin
 
     @testset "Custom Tolerances and Options" begin

lib/OptimizationIpopt/test/problem_types.jl

@@ -4,6 +4,10 @@ using Test
 using LinearAlgebra
 using SparseArrays
 
+# These tests were automatically translated from the Ipopt tests, https://github.com/coin-or/Ipopt
+# licensed under Eclipse Public License - v 2.0
+# https://github.com/coin-or/Ipopt/blob/stable/3.14/LICENSE
+
 @testset "Specific Problem Types" begin
 
     @testset "Optimal Control Problem" begin

lib/OptimizationIpopt/test/runtests.jl

@@ -68,6 +68,9 @@ end
 end
 
 # Include additional tests based on Ipopt examples
+# These tests were automatically translated from the Ipopt tests, https://github.com/coin-or/Ipopt
+# licensed under Eclipse Public License - v 2.0
+# https://github.com/coin-or/Ipopt/blob/stable/3.14/LICENSE
 include("additional_tests.jl")
 include("advanced_features.jl")
 include("problem_types.jl")