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/local/.gitignore

@@ -0,0 +1 @@
+local

test/local/docker-compose.yml

@@ -0,0 +1,29 @@
+version: '3'
+
+services:
+  backup:
+    image: offen/docker-volume-backup:${TEST_VERSION:-canary}
+    hostname: hostnametoken
+    restart: always
+    environment:
+      BACKUP_FILENAME_EXPAND: 'true'
+      BACKUP_FILENAME: test-$$HOSTNAME.tar.gz
+      BACKUP_LATEST_SYMLINK: test-$$HOSTNAME.latest.tar.gz.gpg
+      BACKUP_CRON_EXPRESSION: 0 0 5 31 2 ?
+      BACKUP_RETENTION_DAYS: ${BACKUP_RETENTION_DAYS:-7}
+      BACKUP_PRUNING_LEEWAY: 5s
+      BACKUP_PRUNING_PREFIX: test
+    volumes:
+      - app_data:/backup/app_data:ro
+      - /var/run/docker.sock:/var/run/docker.sock
+      - ./local:/archive
+
+  offen:
+    image: offen/offen:latest
+    labels:
+      - docker-volume-backup.stop-during-backup=true
+    volumes:
+      - app_data:/var/opt/offen
+
+volumes:
+  app_data:

test/local/run.sh

@@ -0,0 +1,55 @@
+#!/bin/sh
+
+set -e
+
+cd "$(dirname "$0")"
+. ../util.sh
+current_test=$(basename $(pwd))
+
+mkdir -p local
+
+docker-compose up -d
+sleep 5
+
+# A symlink for a known file in the volume is created so the test can check
+# whether symlinks are preserved on backup.
+docker-compose exec offen ln -s /var/opt/offen/offen.db /var/opt/offen/db.link
+docker-compose exec backup backup
+
+sleep 5
+
+expect_running_containers "2"
+
+tmp_dir=$(mktemp -d)
+tar -xvf ./local/test-hostnametoken.tar.gz -C $tmp_dir
+if [ ! -f "$tmp_dir/backup/app_data/offen.db" ]; then
+  fail "Could not find expected file in untared archive."
+fi
+rm -f ./local/test-hostnametoken.tar.gz
+
+if [ ! -L "$tmp_dir/backup/app_data/db.link" ]; then
+  fail "Could not find expected symlink in untared archive."
+fi
+
+pass "Found relevant files in decrypted and untared local backup."
+
+if [ ! -L ./local/test-hostnametoken.latest.tar.gz.gpg ]; then
+  fail "Could not find symlink to latest version."
+fi
+
+pass "Found symlink to latest version in local backup."
+
+# The second part of this test checks if backups get deleted when the retention
+# is set to 0 days (which it should not as it would mean all backups get deleted)
+# TODO: find out if we can test actual deletion without having to wait for a day
+BACKUP_RETENTION_DAYS="0" docker-compose up -d
+sleep 5
+
+docker-compose exec backup backup
+
+if [ "$(find ./local -type f | wc -l)" != "1" ]; then
+  fail "Backups should not have been deleted, instead seen: "$(find ./local -type f)""
+fi
+pass "Local backups have not been deleted."
+
+docker-compose down --volumes