fix tests and linting

test/cases/postWarning.ts

@@ -99,18 +99,17 @@ describe("postWarning", () => {
             .catch(err => done(err));
     });
 
-    it('Should return 400 if missing body', (done: Done) => {
-        fetch(getbaseURL()
-            + "/api/warnUser", {
-            method: 'POST',
+    it("Should return 400 if missing body", (done: Done) => {
+        fetch(`${getbaseURL()}/api/warnUser`, {
+            method: "POST",
             headers: {
-                'Content-Type': 'application/json',
+                "Content-Type": "application/json",
             }
         })
-        .then(async res => {
-            assert.strictEqual(res.status, 400);
-            done();
-        })
-        .catch(err => done(err));
+            .then(async res => {
+                assert.strictEqual(res.status, 400);
+                done();
+            })
+            .catch(err => done(err));
     });
 });