only test converting images that exist (#655)

Author: demoray

eng/test-conversion.sh

@@ -12,9 +12,11 @@ IMAGES_TXT=${1:-eng/images.txt}
 CONVERT=${2:-target/x86_64-unknown-linux-musl/release/avml-convert}
 
 for SKU in $(cat ${IMAGES_TXT}); do
-    echo testing conversion ${SKU}.lime
-    ${CONVERT} ${SKU}.lime ${SKU}.uncompressed.lime
-    ${CONVERT} --source-format lime --format lime_compressed ${SKU}.uncompressed.lime ${SKU}.recompressed.lime
-    diff -q ${SKU}.lime ${SKU}.recompressed.lime
-    rm ${SKU}.recompressed.lime ${SKU}.uncompressed.lime
+    if [ -f ${SKU}.lime ]; then
+        echo testing conversion ${SKU}.lime
+        ${CONVERT} ${SKU}.lime ${SKU}.uncompressed.lime
+        ${CONVERT} --source-format lime --format lime_compressed ${SKU}.uncompressed.lime ${SKU}.recompressed.lime
+        diff -q ${SKU}.lime ${SKU}.recompressed.lime
+        rm ${SKU}.recompressed.lime ${SKU}.uncompressed.lime
+    fi
 done