tests: Add a reuse flag test for the 'incus image import'

Signed-off-by: Piotr Resztak <[email protected]>

test/main.sh

@@ -296,6 +296,7 @@ if [ "${1:-"all"}" != "cluster" ]; then
     run_test test_image_auto_update "image auto-update"
     run_test test_image_prefer_cached "image prefer cached"
     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_acl "image acl"
     run_test test_cloud_init "cloud-init"

test/suites/image.sh

@@ -122,6 +122,22 @@ test_image_import_existing_alias() {
     incus image delete newimage image2
 }
 
+test_image_import_with_reuse() {
+    ensure_import_testimage
+    incus init testimage c
+    fingerprint="$(incus publish c --alias image1 | awk '{print $NF;}')"
+    incus delete c
+    incus image export image1 image1.file
+    incus image delete image1
+
+    incus image import image1.file.tar.gz --alias testimage --reuse
+
+    [ "$(incus image ls -c F -f csv testimage)" = "${fingerprint}" ]
+    [ "$(incus image ls -f csv | wc -l)" = "1" ]
+
+    incus image delete testimage
+}
+
 test_image_refresh() {
   # shellcheck disable=2039,3043
   local INCUS2_DIR INCUS2_ADDR