imapnotify: enable STARTTLS if enabled in email account config (#5013)

* imapnotify: enable STARTTLS if enabled in email account config

Since version 2.3.10 goimapnotify supports starttls. In version 2.3.11 a
typo in the settings was fixed, using tlsOptions.starttls to enable it.

This commit enables starttls in the goimapnotify config file if it is
enabled in the email account's imap settings.

* imapnotify: test generated config file

Compare the generated service config file with a manually verified
sample.

modules/services/imapnotify.nix

@@ -72,6 +72,7 @@ let
       inherit (account.imap) host;
       inherit port;
       tls = account.imap.tls.enable;
+      tlsOptions.starttls = account.imap.tls.useStartTls;
       username = account.userName;
       passwordCmd =
         lib.concatMapStringsSep " " lib.escapeShellArg account.passwordCommand;

tests/modules/services/imapnotify/imapnotify-config.json

@@ -0,0 +1 @@
+{"boxes":["Inbox"],"host":"imap.example.com","onNewMail":"@notmuch@/bin/notmuch new\n","passwordCmd":"'password-command'","port":993,"tls":true,"tlsOptions":{"starttls":false},"username":"home.manager"}

tests/modules/services/imapnotify/imapnotify.nix

@@ -35,5 +35,10 @@ with lib;
     serviceFileNormalized="$(normalizeStorePaths "$serviceFile")"
     assertFileExists $serviceFile
     assertFileContent $serviceFileNormalized ${./imapnotify.service}
+
+    configFile="home-files/.config/imapnotify/imapnotify-hm-example.com-config.json"
+    configFileNormalized="$(normalizeStorePaths "$configFile")"
+    assertFileExists $configFile
+    assertFileContent $configFileNormalized ${./imapnotify-config.json}
   '';
 }