Fix tests

Author: avik-pal

src/default.jl

@@ -142,13 +142,12 @@ end
 
     resids = map(x -> Symbol("$(x)_resid"), cache_syms)
     for (sym, resid) in zip(cache_syms, resids)
-        push!(calls, :($(resid) = get_fu($(sym))))
+        push!(calls, :($(resid) = @isdefined($(sym)) ? get_fu($(sym)) : nothing))
     end
     push!(calls,
         quote
             fus = tuple($(Tuple(resids)...))
             minfu, idx = __findmin(cache.internalnorm, fus)
-            idx += cache.alg.start_index - 1
             stats = __compile_stats(cache.caches[idx])
             u = get_u(cache.caches[idx])
             retcode = cache.caches[idx].retcode
@@ -225,13 +224,12 @@ for (probType, pType) in ((:NonlinearProblem, :NLS), (:NonlinearLeastSquaresProb
 
             resids = map(x -> Symbol("$(x)_resid"), sol_syms)
             for (sym, resid) in zip(sol_syms, resids)
-                push!(calls, :($(resid) = $(sym).resid))
+                push!(calls, :($(resid) = @isdefined($(sym)) ? $(sym).resid : nothing))
             end
 
             push!(calls, quote
                 resids = tuple($(Tuple(resids)...))
                 minfu, idx = __findmin(DEFAULT_NORM, resids)
-                idx += alg.start_index - 1
             end)
 
             for i in 1:N

src/utils.jl

@@ -99,6 +99,7 @@ function __findmin_caches(f, caches)
 end
 function __findmin(f, x)
     return findmin(x) do xᵢ
+        xᵢ === nothing && return Inf
         fx = f(xᵢ)
         return isnan(fx) ? Inf : fx
     end

test/misc/polyalg_tests.jl

@@ -84,10 +84,8 @@ end
         Broyden(; autodiff = AutoFiniteDiff()), LimitedMemoryBroyden()))
 
     # Uses the `__solve` function
-    solver = solve(probN; abstol = 1e-9)
-    @test SciMLBase.successful_retcode(solver)
+    @test_throws MethodError solve(probN; abstol = 1e-9)
     @test_throws MethodError solve(probN, RobustMultiNewton(); abstol = 1e-9)
-    @test SciMLBase.successful_retcode(solver)
     solver = solve(probN, RobustMultiNewton(; autodiff = AutoFiniteDiff()); abstol = 1e-9)
     @test SciMLBase.successful_retcode(solver)
     solver = solve(