nixosTests.matomo: extend test coverage

nixos/tests/matomo.nix

@@ -37,11 +37,25 @@ let
         machine.wait_for_unit("phpfpm-matomo.service")
         machine.wait_for_unit("nginx.service")
 
+        with subtest("matomo.js reachable via HTTP"):
+          machine.succeed("curl -sSfk http://machine/matomo.js")
+
+        with subtest("js/piwik.js reachable via HTTP"):
+          machine.succeed("curl -sSfk http://machine/js/piwik.js")
+
+        with subtest("matomo.php (API) reachable via HTTP"):
+          machine.succeed("curl -sSfk http://machine/matomo.php")
+
         # without the grep the command does not produce valid utf-8 for some reason
         with subtest("welcome screen loads"):
             machine.succeed(
                 "curl -sSfL http://localhost/ | grep '<title>Matomo[^<]*Installation'"
             )
+
+        with subtest("killing the phpfpm process should trigger an automatic restart"):
+          machine.succeed("systemctl kill -s KILL phpfpm-matomo")
+          machine.sleep(1)
+          machine.wait_for_unit("phpfpm-matomo.service")
       '';
     };
 in