backups: add btcpayserver database

test/base.py

@@ -166,6 +166,10 @@ def run_tests(extra_tests):
         "export $(cat /secrets/backup-encryption-env); duplicity list-current-files 'file:///var/lib/localBackups'",
         "var/lib/bitcoind/wallet.dat",
     )
+    assert_matches(
+        "export $(cat /secrets/backup-encryption-env); duplicity list-current-files 'file:///var/lib/localBackups'",
+        "var/backup/postgresql/btcpaydb.sql.gz",
+    )
 
     ### Check that all extra_tests have been run
     assert len(extra_tests) == 0

test/test.nix

@@ -19,6 +19,9 @@ import ./make-test.nix rec {
       # hardened
     ];
 
+    # needed because duplicity requires 270 MB of free temp space, regardless of backup size.
+    virtualisation.diskSize = 1024;
+
     nix-bitcoin.netns-isolation.enable = (scenario == "withnetns");
 
     services.bitcoind.extraConfig = mkForce "connect=0";