test(batch7): implement t3 cross-cutting mapped tests

dotnet/tests/ZB.MOM.NatsNet.Server.Tests/ImplBacklog/NatsServerTests.cs

@@ -348,6 +348,62 @@ public sealed class NatsServerTests
         "TestServerConfigLastLineComments".ShouldNotBeNullOrWhiteSpace();
     }
 
+    [Fact] // T:2904
+    public void ServerClusterAndGatewayNameNoSpace_ShouldSucceed()
+    {
+        var serverNameErrors = new List<Exception>();
+        var warnings = new List<Exception>();
+        var parseOptions = new ServerOptions();
+
+        parseOptions.ProcessConfigFileLine("server_name", "my server", serverNameErrors, warnings);
+        serverNameErrors.ShouldContain(ServerErrors.ErrServerNameHasSpaces);
+
+        var (serverWithSpacedName, serverNameError) = NatsServer.NewServer(new ServerOptions
+        {
+            ServerName = "my server",
+        });
+        serverWithSpacedName.ShouldBeNull();
+        serverNameError.ShouldNotBeNull();
+        serverNameError.Message.ShouldContain("server name cannot contain spaces");
+
+        var clusterErrors = new List<Exception>();
+        ServerOptions.ParseCluster(
+            new Dictionary<string, object?>
+            {
+                ["port"] = -1L,
+                ["name"] = "my cluster",
+            },
+            new ServerOptions(),
+            clusterErrors,
+            warnings: null);
+        clusterErrors.Count.ShouldBeGreaterThanOrEqualTo(1);
+        clusterErrors[^1].Message.ShouldContain(ServerErrors.ErrClusterNameHasSpaces.Message);
+
+        var (clusterServer, clusterError) = NatsServer.NewServer(new ServerOptions
+        {
+            Cluster = new ClusterOpts
+            {
+                Name = "my cluster",
+                Port = -1,
+            },
+        });
+        clusterServer.ShouldBeNull();
+        clusterError.ShouldBeSameAs(ServerErrors.ErrClusterNameHasSpaces);
+
+        var gatewayErrors = new List<Exception>();
+        ServerOptions.ParseGateway(
+            new Dictionary<string, object?>
+            {
+                ["port"] = -1L,
+                ["name"] = "my gateway",
+            },
+            new ServerOptions(),
+            gatewayErrors,
+            warnings: null);
+        gatewayErrors.Count.ShouldBe(1);
+        gatewayErrors[0].Message.ShouldContain(ServerErrors.ErrGatewayNameHasSpaces.Message);
+    }
+
     [Fact] // T:2905
     public void ServerClientURL_ShouldSucceed()
     {