diff --git a/src/routes/postWarning.ts b/src/routes/postWarning.ts
index 015a9f8..583fbe2 100644
--- a/src/routes/postWarning.ts
+++ b/src/routes/postWarning.ts
@@ -6,6 +6,8 @@ import {getHash} from '../utils/getHash';
 import { HashedUserID, UserID } from '../types/user.model';
 
 export async function postWarning(req: Request, res: Response): Promise<Response> {
+    // exit early if no body passed in
+    if (!req.body.userID && !req.body.issuerUserID) return res.status(400).json({"message": "Missing parameters"});
     // Collect user input data
     const issuerUserID: HashedUserID = getHash(<UserID> req.body.issuerUserID);
     const userID: UserID = req.body.userID;
diff --git a/test/cases/getLockCategoriesByHash.ts b/test/cases/getLockCategoriesByHash.ts
index d31f7cf..0701210 100644
--- a/test/cases/getLockCategoriesByHash.ts
+++ b/test/cases/getLockCategoriesByHash.ts
@@ -2,7 +2,7 @@ import fetch from 'node-fetch';
 import {Done, getbaseURL} from '../utils';
 import {getHash} from '../../src/utils/getHash';
 import {db} from '../../src/databases/databases';
-
+import assert from 'assert';
 
 describe('getLockCategoriesByHash', () => {
     before(async () => {
diff --git a/test/cases/getSkipSegments.ts b/test/cases/getSkipSegments.ts
index 979d33b..57ec9d7 100644
--- a/test/cases/getSkipSegments.ts
+++ b/test/cases/getSkipSegments.ts
@@ -2,6 +2,7 @@ import fetch from 'node-fetch';
 import {db} from '../../src/databases/databases';
 import {Done, getbaseURL} from '../utils';
 import {getHash} from '../../src/utils/getHash';
+import assert from 'assert';
 
 describe('getSkipSegments', () => {
     before(async () => {
diff --git a/test/cases/getSkipSegmentsByHash.ts b/test/cases/getSkipSegmentsByHash.ts
index d1da36e..d37eabb 100644
--- a/test/cases/getSkipSegmentsByHash.ts
+++ b/test/cases/getSkipSegmentsByHash.ts
@@ -108,10 +108,10 @@ describe('getSegmentsByHash', () => {
         .catch(() => done("Couldn't call endpoint"));
     });
 
-    it('Should return 404 for no hash', (done: Done) => {
+    it('Should return 400 for no hash', (done: Done) => {
         fetch(getbaseURL() + '/api/skipSegments/?categories=["shilling"]')
         .then(res => {
-            if (res.status !== 404) done("expected 404, got " + res.status);
+            if (res.status !== 400) done("expected 400, got " + res.status);
             else done(); // pass
         })
         .catch(() => done("Couldn't call endpoint"));
diff --git a/test/cases/getUserID.ts b/test/cases/getUserID.ts
index e0c7c5a..528804f 100644
--- a/test/cases/getUserID.ts
+++ b/test/cases/getUserID.ts
@@ -2,6 +2,7 @@ import fetch from 'node-fetch';
 import {Done, getbaseURL} from '../utils';
 import {db} from '../../src/databases/databases';
 import {getHash} from '../../src/utils/getHash';
+import assert from 'assert';
 
 describe('getUserID', () => {
     before(async () => {
@@ -398,4 +399,13 @@ describe('getUserID', () => {
         })
         .catch(() => ("couldn't call endpoint"));
     });
+
+    it('should return 400 if no username parameter specified', (done: Done) => {
+        fetch(getbaseURL() + '/api/userID')
+        .then(res => {
+            assert.strictEqual(res.status, 400);
+            done();
+        })
+        .catch(() => ("couldn't call endpoint"));
+    });
 });
diff --git a/test/cases/postPurgeAllSegments.ts b/test/cases/postPurgeAllSegments.ts
index a907ddc..0fd337a 100644
--- a/test/cases/postPurgeAllSegments.ts
+++ b/test/cases/postPurgeAllSegments.ts
@@ -3,6 +3,7 @@ import {Done, getbaseURL} from '../utils';
 import {db} from '../../src/databases/databases';
 import {getHash} from '../../src/utils/getHash';
 import {IDatabase} from '../../src/databases/IDatabase';
+import assert from 'assert';
 
 async function dbSponsorTimesAdd(db: IDatabase, videoID: string, startTime: number, endTime: number, UUID: string, category: string) {
     const votes = 0,
@@ -79,4 +80,18 @@ describe('postPurgeAllSegments', function () {
         })
         .catch(err => done(err));
     });
+
+    it('Should return 400 if missing body', function (done: Done) {
+        fetch(`${baseURL}${route}`, {
+            method: 'POST',
+            headers: {
+                'Content-Type': 'application/json',
+            }
+        })
+        .then(async res => {
+            assert.strictEqual(res.status, 400);
+            done();
+        })
+        .catch(err => done(err));
+    });
 });
diff --git a/test/cases/postWarning.ts b/test/cases/postWarning.ts
index 8231148..f352165 100644
--- a/test/cases/postWarning.ts
+++ b/test/cases/postWarning.ts
@@ -2,6 +2,7 @@ import fetch from 'node-fetch';
 import {Done, getbaseURL} from '../utils';
 import {db} from '../../src/databases/databases';
 import {getHash} from '../../src/utils/getHash';
+import assert from 'assert';
 
 describe('postWarning', () => {
     before(async () => {
@@ -127,4 +128,19 @@ describe('postWarning', () => {
         })
         .catch(err => done(err));
     });
+
+    it('Should return 400 if missing body', (done: Done) => {
+        fetch(getbaseURL()
+            + "/api/warnUser", {
+            method: 'POST',
+            headers: {
+                'Content-Type': 'application/json',
+            }
+        })
+        .then(async res => {
+            assert.strictEqual(res.status, 400);
+            done();
+        })
+        .catch(err => done(err));
+    });
 });