tests: clean up tests

- Move all module tests to their own directories.

- Avoid duplication of `// import`.

tests/modules/programs/mbsync/default.nix

@@ -0,0 +1,3 @@
+{
+  mbsync = ./mbsync.nix;
+}

tests/modules/programs/mbsync/mbsync-expected.conf

@@ -0,0 +1,55 @@
+# Generated by Home Manager.
+
+IMAPAccount hm-account
+CertificateFile /etc/ssl/certs/ca-certificates.crt
+Host imap.example.org
+PassCmd "password-command 2"
+SSLType IMAPS
+User home.manager.jr
+
+IMAPStore hm-account-remote
+Account hm-account
+
+MaildirStore hm-account-local
+Inbox /home/hm-user/Mail/hm-account/Inbox
+Path /home/hm-user/Mail/hm-account/
+SubFolders Verbatim
+
+Channel hm-account
+Create None
+Expunge None
+Master :hm-account-remote:
+Patterns *
+Remove None
+Slave :hm-account-local:
+SyncState *
+
+
+IMAPAccount hm@example.com
+CertificateFile /etc/ssl/certs/ca-certificates.crt
+Host imap.example.com
+PassCmd password-command
+SSLType IMAPS
+User home.manager
+
+IMAPStore hm@example.com-remote
+Account hm@example.com
+
+MaildirStore hm@example.com-local
+Inbox /home/hm-user/Mail/hm@example.com/Inbox
+Path /home/hm-user/Mail/hm@example.com/
+SubFolders Verbatim
+
+Channel hm@example.com
+Create None
+Expunge None
+Master :hm@example.com-remote:
+Patterns *
+Remove None
+Slave :hm@example.com-local:
+SyncState *
+
+
+Group inboxes
+Channel hm-account:Inbox
+Channel hm@example.com:Inbox1,Inbox2

tests/modules/programs/mbsync/mbsync.nix

@@ -0,0 +1,35 @@
+{ config, lib, pkgs, ... }:
+
+with lib;
+
+{
+  imports = [ ../../accounts/email-test-accounts.nix ];
+
+  config = {
+    home.username = "hm-user";
+    home.homeDirectory = "/home/hm-user";
+
+    programs.mbsync = {
+      enable = true;
+      groups.inboxes = {
+        "hm@example.com" = [ "Inbox1" "Inbox2" ];
+        hm-account = [ "Inbox" ];
+      };
+    };
+
+    accounts.email.accounts = {
+      "hm@example.com".mbsync = {
+        enable = true;
+      };
+
+      hm-account.mbsync = {
+        enable = true;
+      };
+    };
+
+    nmt.script = ''
+      assertFileExists home-files/.mbsyncrc
+      assertFileContent home-files/.mbsyncrc ${./mbsync-expected.conf}
+    '';
+  };
+}