tests: Add test for publishing split images

Signed-off-by: Saahir Narang <[email protected]>

Author: saahirN

test/main.sh

@@ -301,6 +301,7 @@ if [ "${1:-"all"}" != "cluster" ]; then
     run_test test_image_import_dir "import image from directory"
     run_test test_image_import_with_reuse "import image with reuse flag"
     run_test test_image_refresh "image refresh"
+    run_test test_image_split "image split"
     run_test test_image_acl "image acl"
     run_test test_cloud_init "cloud-init"
     run_test test_exec "exec"

test/suites/image.sh

@@ -201,3 +201,16 @@ test_image_refresh() {
   incus remote rm l2
   kill_incus "${INCUS2_DIR}"
 }
+
+test_image_split() {
+  ensure_import_testimage
+  incus init testimage c
+  incus publish c --alias splitimage --split
+  incus delete c
+  incus image export splitimage splitimage.file
+  incus image delete splitimage
+  incus image import splitimage.file splitimage.file.root --alias splitimage
+  incus init splitimage c
+  incus delete c
+  incus image delete splitimage
+}