change test to TestLogger

test/scenes.jl

@@ -8,15 +8,12 @@
     @test theme(scene, :nonexistant, default=1) == 1
 
     # test that deprecated `resolution keyword still works but throws warning`
-    errstring = mktemp() do path, io
-        redirect_stderr(io) do
-            scene = Scene(; resolution = (999, 999), size = (123, 123))
-            @test scene.px_area[] == Rect2i((0, 0), (999, 999))
-        end
-        flush(io)
-        s = read(path, String)
+    logger = Test.TestLogger()
+    Base.with_logger(logger) do
+        scene = Scene(; resolution = (999, 999), size = (123, 123))
+        @test scene.px_area[] == Rect2i((0, 0), (999, 999))
     end
-    @test occursin("The `resolution` keyword for `Scene`s and `Figure`s has been deprecated", errstring)
+    @test occursin("The `resolution` keyword for `Scene`s and `Figure`s has been deprecated", logger.logs[1].message)
 end
 
 @testset "Lighting" begin