aesthetics: move commonly-used function to top of file

mocha-dotnet/tests/Mocha.Oms.Server.Tests/BasicTests.cs

@@ -27,6 +27,11 @@ public class Tests
 		program.Stop();
 	}
 
+    protected string? BuildUrl(string v)
+    {
+		return String.Format("http://localhost:{0}{1}", program.Port, v);
+    }
+
 	[Test]
 	public async Task Tenant_List_Test()
 	{
@@ -117,9 +122,4 @@ public class Tests
 		Assert.That(json["result"].ToString(), Is.EqualTo("success"));
 		Assert.That(json["value"]["widget"].ToString(), Is.EqualTo("root"));
 	}
-
-    protected string? BuildUrl(string v)
-    {
-		return String.Format("http://localhost:{0}{1}", program.Port, v);
-    }
 }