Add a test for copying CA derivations outputs

tests/local.mk

@@ -37,7 +37,9 @@ nix_tests = \
   describe-stores.sh \
   flakes.sh \
   content-addressed.sh \
-  build.sh
+  build.sh \
+  content-addressed.sh \
+  nix-copy-content-addressed.sh
   # parallel.sh
   # build-remote-content-addressed-fixed.sh \
 

tests/nix-copy-content-addressed.sh

@@ -0,0 +1,24 @@
+source common.sh
+
+clearStore
+clearCache
+
+commonArgs=( \
+    --experimental-features 'nix-command flakes ca-derivations ca-references' \
+    --file ./content-addressed.nix \
+    -v
+)
+
+remoteRoot=$TEST_ROOT/store2
+chmod -R u+w "$remoteRoot" || true
+rm -rf "$remoteRoot"
+
+# Fill the remote cache
+nix copy --to $remoteRoot --no-require-sigs "${commonArgs[@]}"
+clearStore
+
+# Fetch the otput from the cache
+nix copy --from $remoteRoot --no-require-sigs "${commonArgs[@]}"
+
+# Ensure that everything is locally present
+nix build "${commonArgs[@]}" -j0 --no-link