nixosTests.mongodb: actually use mongodb service module and add support for mongodb-ce

nixos/tests/mongodb.nix

@@ -1,56 +1,37 @@
-# This test start mongodb, runs a query using mongo shell
-{ pkgs, ... }:
+# This test starts mongodb and runs a query using mongo shell
+{ config, lib, ... }:
 let
+  # required for test execution on darwin
+  pkgs = config.node.pkgs;
   testQuery = pkgs.writeScript "nixtest.js" ''
-    db.greetings.insert({ "greeting": "hello" });
+    db.greetings.insertOne({ "greeting": "hello" });
     print(db.greetings.findOne().greeting);
   '';
-
-  runMongoDBTest = pkg: ''
-    node.execute("(rm -rf data || true) && mkdir data")
-    node.execute(
-        "${pkg}/bin/mongod --fork --logpath logs --dbpath data"
-    )
-    node.wait_for_open_port(27017)
-
-    assert "hello" in node.succeed(
-        "${pkg}/bin/mongo ${testQuery}"
-    )
-
-    node.execute(
-        "${pkg}/bin/mongod --shutdown --dbpath data"
-    )
-    node.wait_for_closed_port(27017)
-  '';
-
+  mongoshExe = lib.getExe pkgs.mongosh;
 in
 {
   name = "mongodb";
-  meta = with pkgs.lib.maintainers; {
-    maintainers = [
-      bluescreen303
-      offline
-      phile314
-    ];
+  meta.maintainers = with pkgs.lib.maintainers; [
+    bluescreen303
+    offline
+    phile314
+    niklaskorz
+  ];
+
+  nodes.mongodb = {
+    services.mongodb.enable = true;
   };
 
-  nodes = {
-    node =
-      { ... }:
-      {
-        environment.systemPackages = with pkgs; [
-          # remember to update mongodb.passthru.tests if you change this
-          mongodb-7_0
-        ];
-      };
-  };
+  testScript = ''
+    start_all()
 
-  testScript =
-    ''
-      node.start()
-    ''
-    + runMongoDBTest pkgs.mongodb-7_0
-    + ''
-      node.shutdown()
-    '';
+    with subtest("start mongodb"):
+        mongodb.wait_for_unit("mongodb.service")
+        mongodb.wait_for_open_port(27017)
+
+    with subtest("insert and find a document"):
+        result = mongodb.succeed("${mongoshExe} ${testQuery}")
+        print("Test output:", result)
+        assert result.strip() == "hello"
+  '';
 }