Completed the creation of the MTT client.

tests/client_test.rs

@@ -1,5 +1,15 @@
-use morethantext::MoreThanText;
-use std::collections::HashSet;
+use isolang::Language;
+use morethantext::{Action, Field, Include, MoreThanText, Name, Path, TestMoreThanText};
+use std::{collections::HashSet, sync::mpsc::RecvTimeoutError};
+use uuid::Uuid;
+
+fn doc_name() -> Name {
+    Name::english("session")
+}
+
+fn lang_name() -> Name {
+    Name::english("language")
+}
 
 #[test]
 fn are_session_ids_unique() {
@@ -12,3 +22,101 @@ fn are_session_ids_unique() {
     }
     assert_eq!(ids.len(), count, "ids = {:?}", ids);
 }
+
+#[test]
+fn can_existing_sessions_be_used() {
+    let mtt = MoreThanText::new();
+    let client1 = mtt.client();
+    let id = client1.session_id();
+    drop(client1);
+    let client2 = mtt.client_with_session(id.clone(), None);
+    assert_eq!(client2.session_id(), id);
+}
+
+#[test]
+fn does_expired_session_ids_return_new() {
+    let id = Uuid::new_v4().to_string();
+    let mtt = MoreThanText::new();
+    let client = mtt.client_with_session(id.clone(), None);
+    assert_ne!(client.session_id(), id);
+}
+
+#[test]
+fn does_bad_id_string_get_new() {
+    let id = "Not uuid".to_string();
+    let mtt = MoreThanText::new();
+    let client = mtt.client_with_session(id.clone(), None);
+    assert_ne!(client.session_id(), id);
+}
+
+#[test]
+fn can_new_clients_set_langauge() {
+    let lang = Language::from_639_1("fr").unwrap();
+    let mut test_env = TestMoreThanText::new();
+    let mtt = test_env.get_morethantext();
+    let path = Path::new(
+        Include::All,
+        Include::Just(doc_name().into()),
+        Include::Just(Action::OnAddition),
+    );
+    test_env.register_channel(vec![path]);
+    mtt.client_with_language(lang.clone());
+    let result = test_env.get_trigger_records(Action::OnAddition);
+    let rec = result.iter().last().unwrap();
+    assert_eq!(rec.get(&lang_name()).unwrap(), lang.into());
+}
+
+#[test]
+fn is_lanaguage_set_for_expired_session() {
+    let lang = Language::from_639_1("fr").unwrap();
+    let mut test_env = TestMoreThanText::new();
+    let mtt = test_env.get_morethantext();
+    let path = Path::new(
+        Include::All,
+        Include::Just(doc_name().into()),
+        Include::Just(Action::OnAddition),
+    );
+    test_env.register_channel(vec![path]);
+    mtt.client_with_session(Uuid::new_v4().to_string(), Some(lang));
+    let result = test_env.get_trigger_records(Action::OnAddition);
+    let rec = result.iter().last().unwrap();
+    assert_eq!(rec.get(&lang_name()).unwrap(), lang.into());
+}
+
+#[test]
+fn is_lanaguage_set_for_bad_session() {
+    let lang = Language::from_639_1("de").unwrap();
+    let mut test_env = TestMoreThanText::new();
+    let mtt = test_env.get_morethantext();
+    let path = Path::new(
+        Include::All,
+        Include::Just(doc_name().into()),
+        Include::Just(Action::OnAddition),
+    );
+    test_env.register_channel(vec![path]);
+    mtt.client_with_session("bad".to_string(), Some(lang));
+    let result = test_env.get_trigger_records(Action::OnAddition);
+    let rec = result.iter().last().unwrap();
+    assert_eq!(rec.get(&lang_name()).unwrap(), lang.into());
+}
+
+#[test]
+fn do_existing_sessions_keep_language_unchanged() {
+    let lang1 = Language::from_639_1("de").unwrap();
+    let lang2 = Language::from_639_1("fr").unwrap();
+    let mut test_env = TestMoreThanText::new();
+    let mtt = test_env.get_morethantext();
+    let client = mtt.client_with_language(lang1);
+    let id = client.session_id();
+    drop(client);
+    let path = Path::new(
+        Include::All,
+        Include::Just(doc_name().into()),
+        Include::Just(Action::OnUpdate),
+    );
+    test_env.register_channel(vec![path]);
+    mtt.client_with_session(id.clone(), Some(lang2));
+    let result = test_env.get_trigger_records(Action::OnUpdate);
+    let rec = result.iter().last().unwrap();
+    assert_eq!(rec.get(&lang_name()).unwrap(), lang1.into());
+}