tests: implement TODO in main/writable-areas from 2016

Apparently we never enabled the code to check if we can write to
SNAP_USER_COMMON. Better late than never.

Signed-off-by: Zygmunt Krynicki <me@zygoon.pl>

tests/main/writable-areas/data-writer/bin/write-data

@@ -11,10 +11,8 @@ echo "hello common" > "$SNAP_COMMON/$1"
 echo "Writing to SNAP_DATA"
 echo "hello data" > "$SNAP_DATA/$1"
 
-# TODO: As soon as `snap run` is used (which creates this directory), uncomment
-# the following lines:
-# echo "Writing to SNAP_USER_COMMON"
-# echo "hello user common" > $SNAP_USER_COMMON/$1
+echo "Writing to SNAP_USER_COMMON"
+echo "hello user common" > $SNAP_USER_COMMON/$1
 
 echo "Writing to SNAP_USER_DATA"
 echo "hello user data" > "$SNAP_USER_DATA/$1"

tests/main/writable-areas/task.yaml

@@ -17,16 +17,12 @@ execute: |
     [ -f /var/snap/data-writer/x1/from-app ]
     [ -f /var/snap/data-writer/common/from-app ]
     [ -f /root/snap/data-writer/x1/from-app ]
-    # TODO: As soon as `snap run` is used (which creates this directory),
-    # uncomment the following line:
-    #[ -f /root/snap/data-writer/common/from-app ]
+    [ -f /root/snap/data-writer/common/from-app ]
 
     echo "Waiting for data writer service to finish..."
     retry -n 20 --wait 1 sh -c 'test -f /root/snap/data-writer/x1/from-service'
 
     echo "Services can write to writable areas"
     [ -f /var/snap/data-writer/x1/from-service ]
     [ -f /var/snap/data-writer/common/from-service ]
-    # TODO: As soon as `snap run` is used (which creates this directory),
-    # uncomment the following line:
-    #[ -f /root/snap/data-writer/common/from-service ]
+    [ -f /root/snap/data-writer/common/from-service ]