downgrade testing

.github/workflows/Downgrade.yml

@@ -0,0 +1,28 @@
+name: Downgrade
+on:
+  pull_request:
+    branches:
+      - master
+    paths-ignore:
+      - 'docs/**'
+  push:
+    branches:
+      - master
+    paths-ignore:
+      - 'docs/**'
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        version: ['1']
+    steps:
+      - uses: actions/checkout@v4
+      - uses: julia-actions/setup-julia@v1
+        with:
+          version: ${{ matrix.version }}
+      - uses: cjdoris/julia-downgrade-compat-action@v1
+        with:
+          skip: Pkg,TOML,Mmap
+      - uses: julia-actions/julia-buildpkg@v1
+      - uses: julia-actions/julia-runtest@v1

Project.toml

@@ -10,15 +10,12 @@ OrderedCollections = "bac558e1-5e72-5ebc-8fee-abe8a469f55d"
 PrecompileTools = "aea7be01-6a6a-4083-8856-8a6e6704d82a"
 Requires = "ae029012-a4dd-5104-9daa-d747884805df"
 TranscodingStreams = "3bb67fe8-82b1-5028-8e26-92a6c54297fa"
-UUIDs = "cf7118a7-6976-5b1a-9a39-7adc72f591a4"
 
 [compat]
-FileIO = "1"
+FileIO = "1.5"
 MacroTools = "0.5"
-Mmap = "1"
 OrderedCollections = "1"
 PrecompileTools = "1"
-Requires = "1"
+Requires = "1.3"
 TranscodingStreams = "0.9, 0.10, 0.11"
-UUIDs = "1"
 julia = "1.6"

test/loadsave.jl

@@ -117,13 +117,6 @@ jldopen(fn, "r+") do f
     @test f["x2"] == x2
 end
 
-# Issue #19
-save(fn, Dict("a"=>[1,2,3]))
-io = open(fn)
-@info("The next error message (involving \"loading nothing\") is a sign of normal operation")
-@test_throws FileIO.CapturedException load(io)
-close(io)
-
 # Issue #33
 d = Dict("params/p1" => 1,
          "params/p2" => 2.,