add additional/missing tests

test/cases/getUsername.ts

@@ -0,0 +1,53 @@
+import { getHash } from "../../src/utils/getHash";
+import { client } from "../utils/httpClient";
+import assert from "assert";
+
+// helpers
+const getUsername = (userID: string) => client({
+    url: "/api/getUsername",
+    params: { userID }
+});
+
+const postSetUserName = (userID: string, username: string) => client({
+    method: "POST",
+    url: "/api/setUsername",
+    params: {
+        userID,
+        username,
+    }
+});
+
+const userOnePrivate = "getUsername_0";
+const userOnePublic = getHash(userOnePrivate);
+const userOneUsername = "getUsername_username";
+
+describe("getUsername test", function() {
+    it("Should get back publicUserID if not set", (done) => {
+        getUsername(userOnePrivate)
+            .then(result => {
+                assert.strictEqual(result.data.userName, userOnePublic);
+                done();
+            })
+            .catch(err => done(err));
+    });
+    it("Should be able to get username after setting", (done) => {
+        postSetUserName(userOnePrivate, userOneUsername)
+            .then(async () => {
+                const result = await getUsername(userOnePrivate);
+                const actual = result.data.userName;
+                assert.strictEqual(actual, userOneUsername);
+                done();
+            })
+            .catch(err => done(err));
+    });
+    it("Should return 400 if no userID provided", (done) => {
+        client({
+            url: "/api/getUsername"
+        })
+            .then(res => {
+                assert.strictEqual(res.status, 400);
+                done();
+            })
+            .catch(err => done(err));
+    });
+});