lang: unit tests in django/await first loading of dict

frontend/static/js/api/LanguageManager.js

@@ -8,10 +8,10 @@ export default class LanguageManager {
 		this.currentLang = 'en'
 		this.chosenLang = localStorage.getItem('preferedLanguage') || this.currentLang;
 		if (this.chosenLang !== this.currentLang && this.availableLanguages.includes(this.chosenLang)) {
-			this.translatePage();
+			this.loading = this.translatePage();
 			this.currentLang = this.chosenLang;
 		} else {
-			this.loadDict(this.chosenLang);
+			this.loading = this.loadDict(this.chosenLang);
 		}
 		document.getElementById('languageDisplay').innerHTML =
 			document.querySelector(`#languageSelector > [value=${this.currentLang}]`)?.innerHTML;
@@ -61,6 +61,10 @@ export default class LanguageManager {
 		this.dict = await response.json();
 	}
 
+	async waitLoading() {
+		await this.loading;
+	}
+
 	get(key, defaultTxt) {
 		if (!this.dict)
 			return defaultTxt;

frontend/static/js/index.js

@@ -49,7 +49,10 @@ const navigateTo = async (uri) => {
 	}
 };
 
-const reloadView = async _ => renderView(lastView);
+const reloadView = async _ => {
+	await lastView?.leavePage();
+	await renderView(lastView);
+}
 
 async function renderView(view)
 {
@@ -142,10 +145,12 @@ document.addEventListener("DOMContentLoaded", async () => {
     });
 
 	//Languages
+	await lang.waitLoading();
 	Array.from(document.getElementById('languageSelector').children).forEach(el => {
 		el.onclick = async _ => {
 			if (await lang.changeLanguage(el.value))
 				return;
+			console.log(lang);
 			document.querySelector('#languageSelector > .active')?.classList.remove('active');
 			el.classList.add('active');
 		};

frontend/tests.py

@@ -1,3 +1,24 @@
-from django.test import TestCase
+import json
+from os import listdir
+
+from django.test import Client, TestCase
+from django.contrib.staticfiles import finders
 
 # Create your tests here.
+
+class DictionnariesTest(TestCase):
+    def setUp(self) -> None:
+        self.client = Client();
+        self.directory = finders.find('js/lang/');
+
+    def test_lang(self):
+        keys = None
+
+        json_files = listdir(self.directory);
+        for file in json_files:
+            with open(f'{self.directory}/{file}') as f:
+                data: dict = json.load(f);
+                if (keys is None):
+                    keys = set(data.keys());
+                else:
+                    self.assertEqual(set(data.keys()), keys);