cover new feature with e2e tests

Signed-off-by: solidDoWant <fred.heinecke@yahoo.com>

Author: solidDoWant

e2e/dr/config/dummy/instance/backend.values.yaml

@@ -86,7 +86,9 @@ controllers:
             printf 'bucket2-seed' > /tmp/obj && \
             mc cp /tmp/obj sw/dummy-bucket2/seed.txt
         env: *s3Env
-  # --- Source data PVC seed (writes a known file into the files-source PVC) ---
+  # --- Source data PVC seed (writes known files into the files-source PVC) ---
+  # Alongside the kept files (hello.txt, sub/keep.txt) it writes files the backup config's filter should
+  # exclude: *.tmp at any depth (skip.tmp, sub/also.tmp) and everything under the top-level cache/ dir.
   dummy-data-seed:
     type: job
     containers:
@@ -98,7 +100,7 @@ controllers:
           - /bin/sh
           - -c
         args:
-          - printf 'files-seed' > /data/hello.txt
+          - mkdir -p /data/sub /data/cache && printf 'files-seed' > /data/hello.txt && printf 'nested-keep' > /data/sub/keep.txt && printf 'tmp' > /data/sub/also.tmp && printf 'tmp' > /data/skip.tmp && printf 'cache' > /data/cache/inner.txt
 persistence:
   data-vol:
     suffix: data-vol # PVC name: dummy-backend-data-vol
@@ -162,7 +164,8 @@ rawResources:
                   - /bin/sh
                   - -c
                 args:
-                  - printf 'shard-a-seed' > /a/d.txt && printf 'shard-b-seed' > /b/d.txt
+                  # d.txt is the kept payload; skip.log in each shard is what the fileGroups filter excludes.
+                  - printf 'shard-a-seed' > /a/d.txt && printf 'shard-b-seed' > /b/d.txt && printf 'log' > /a/skip.log && printf 'log' > /b/skip.log
                 volumeMounts:
                   - name: a
                     mountPath: /a

e2e/dr/config/dummy/tests/backup.values.yaml

@@ -33,12 +33,20 @@ jobConfig:
     files:
       - name: files # => DR subdir "files"
         pvc: dummy-backend-data-vol
+        # Whitelist/blacklist which files are captured. "**" crosses any depth; a bare name is anchored at
+        # the PVC root, and excluding a directory prunes its whole subtree.
+        exclude:
+          - glob: "**/*.tmp" # any .tmp file, at any depth
+          - glob: cache # the top-level cache/ dir and everything under it
     fileGroups:
       - name: shards # => DR subtree "fileGroups/shards/<pvc>"
         snapshotClass: csi-hostpath-groupsnapclass
         selector:
           matchLabels:
             app: dummy-fileshard
+        # Applied identically to every member PVC of the group.
+        exclude:
+          - glob: "**/*.log"
     s3:
       - name: bucket1 # => DR subdir "bucket1"
         path: s3://dummy-bucket1/

e2e/dr/dummy_test.go

@@ -303,12 +303,25 @@ func TestDummy(t *testing.T) {
 			assertSeedFile(t, filepath.Join(mountpoint, "bucket1", "seed.txt"), "bucket1-seed")
 			assertSeedFile(t, filepath.Join(mountpoint, "bucket2", "seed.txt"), "bucket2-seed")
 
+			// The files source's include/exclude filter (exclude **/*.tmp and the top-level cache/ dir) is
+			// applied per entry end to end: a nested non-excluded file survives, while the .tmp files (at any
+			// depth) and the entire cache/ subtree are absent from the capture.
+			assertSeedFile(t, filepath.Join(mountpoint, "files", "sub", "keep.txt"), "nested-keep")
+			assert.NoFileExists(t, filepath.Join(mountpoint, "files", "skip.tmp"))
+			assert.NoFileExists(t, filepath.Join(mountpoint, "files", "sub", "also.tmp"))
+			assert.NoDirExists(t, filepath.Join(mountpoint, "files", "cache"))
+
 			// The fileGroups source captured both label-selected shard PVCs as one VolumeGroupSnapshot into
 			// fileGroups/<group>/<pvc>/. Both member subdirs present with their seeded content confirms the
 			// group was frozen and synced atomically (one subdir per member PVC, keyed by source PVC name).
 			assertSeedFile(t, filepath.Join(mountpoint, "fileGroups", "shards", "dummy-shard-a", "d.txt"), "shard-a-seed")
 			assertSeedFile(t, filepath.Join(mountpoint, "fileGroups", "shards", "dummy-shard-b", "d.txt"), "shard-b-seed")
 
+			// The group-wide filter (exclude **/*.log) applied to every member: the .log file seeded into each
+			// shard is dropped, while the kept payload (d.txt, asserted above) and the member subdir remain.
+			assert.NoFileExists(t, filepath.Join(mountpoint, "fileGroups", "shards", "dummy-shard-a", "skip.log"))
+			assert.NoFileExists(t, filepath.Join(mountpoint, "fileGroups", "shards", "dummy-shard-b", "skip.log"))
+
 			return ctx
 		}).
 		Assess("file-group shards are corrupted before restore", corruptShardData(namespace)).