add simple tests for verbosity

Author: jClugstor

test/runtests.jl

@@ -18,6 +18,7 @@ if GROUP == "All" || GROUP == "Core"
     @time @safetestset "ForwardDiff Overloads" include("forwarddiff_overloads.jl")
     @time @safetestset "Traits" include("traits.jl")
     @time @safetestset "BandedMatrices" include("banded.jl")
+    @time @safetestset "Verbosity" include("verbosity.jl")
 end
 
 # Don't run Enzyme tests on prerelease

test/verbosity.jl

@@ -0,0 +1,18 @@
+using LinearSolve
+using LinearSolve: LinearVerbosity
+using SciMLVerbosity: Verbosity
+using Logging
+using Test
+
+A = [1.0 0 0 0
+     0 1 0 0
+     0 0 1 0
+     0 0 0 0]
+b = rand(4)
+prob = LinearProblem(A, b)
+
+@test_logs (:warn, "Falling back to LU factorization") solve(prob, verbose = LinearVerbosity(default_lu_fallback = Verbosity.Warn()))
+
+@test_logs (:info, "Falling back to LU factorization") solve(prob, verbose = LinearVerbosity(default_lu_fallback = Verbosity.Info()))
+
+@test_logs min_level = Logging.Info solve(prob, verbose = LinearVerbosity(Verbosity.None()))