Untangle tests (#112)

* Isolate S3 test case

* Isolate webdav test case

* Isolate SSH test case

* Isolate local storage test case

* Isolate gpg test case

* Add missing volume mount

* Fix file locations for local test case

* Remove compose test case, use utils

* Use test utils throughout

* Use dedicated tmp dir

* Fix link location that is being tested

* Use dedicated tmp_dirs when working on host fs

* Force delete artifact

* Fix expected filename

* Provide helpful messages on failing tests

* Fix filename

* Use proper volume names

* Fix syntax error, use large resource class

* Use named Docker volumes when referencing them in test scripts

* Add name of test case to logging output

test/gpg/docker-compose.yml

@@ -0,0 +1,26 @@
+version: '3'
+
+services:
+  backup:
+    image: offen/docker-volume-backup:${TEST_VERSION:-canary}
+    restart: always
+    environment:
+      BACKUP_CRON_EXPRESSION: 0 0 5 31 2 ?
+      BACKUP_FILENAME: test.tar.gz
+      BACKUP_LATEST_SYMLINK: test-latest.tar.gz.gpg
+      BACKUP_RETENTION_DAYS: ${BACKUP_RETENTION_DAYS:-7}
+      GPG_PASSPHRASE: 1234secret
+    volumes:
+      - ./local:/archive
+      - app_data:/backup/app_data:ro
+      - /var/run/docker.sock:/var/run/docker.sock
+
+  offen:
+    image: offen/offen:latest
+    labels:
+      - docker-volume-backup.stop-during-backup=true
+    volumes:
+      - app_data:/var/opt/offen
+
+volumes:
+  app_data: