Add a regression test (#37)

* Add a regression test

* Add missing import statements

Author: DilumAluthge

.github/workflows/CI.yml

@@ -85,6 +85,8 @@ jobs:
       - name: Validate versions.json against schema
         run: npx -p [email protected] ajv -s schema.json -d versions.json
 
+      - run: julia --project test/more_tests.jl versions.json
+
       - name: Upload versions.json as workflow artifact
         uses: actions/upload-artifact@65c4c4a1ddee5b72f698fdd19549f0f0fb45cf08 # v4.6.0
         with:

test/more_tests.jl

@@ -0,0 +1,14 @@
+import JSON
+import Test
+
+using Test: @test
+
+const filename = only(ARGS)
+
+const dict = JSON.parsefile(filename)
+
+# This catches regressions like https://github.com/JuliaLang/VersionsJSONUtil.jl/pull/32#issuecomment-2617551478
+for (k_str, _) in pairs(dict)
+    k_ver = VersionNumber(k_str)
+    @test k_ver isa VersionNumber
+end