add error test case

Express/barAndCafe/test/openTripMaps.test.ts

@@ -74,7 +74,25 @@ describe("Test the otm city path", () => {
         });
     });
 
-    //TODO faire les test pour les cas d'erreur
+    test("It should response the 200 code for GET method (default radius)", done => {
+        request(app)
+        .get("/otm/radius")
+        .query({'lon':'-1.4344594', 'lat' : '46.6686478'})
+        .then(response => {
+            expect(response.statusCode).toBe(200);
+            done();
+        });
+    });
+
+    test("It should response the 400 code for GET method (missing lon and lat)", done => {
+        request(app)
+        .get("/otm/radius")
+        .then(response => {
+            expect(response.statusCode).toBe(400);
+            done();
+        });
+    });
+
 
     test("Get bar in radius from API", done  => {
         const out = {