in azure-kusto-data/src/client_details.rs [273:286]
fn test_set_connector_details_no_app_version() {
let details = ConnectorDetailsBuilder::default()
.with_name("MyConnector")
.with_version("1.0")
.with_app_name("MyApp")
.build()
.unwrap();
let (header, user) = set_connector_details(details);
assert!(header.contains("Kusto.MyConnector:{1.0}"));
assert!(header.contains("App.{MyApp}:{unknown}"));
assert_eq!(user, "[none]");
}