diff --git a/src/api/post.ts b/src/api/post.ts
index 376bd81..f4ac8d4 100644
--- a/src/api/post.ts
+++ b/src/api/post.ts
@@ -32,8 +32,7 @@ export const addPostMethods = (server: express.Express) => {
             debug("POST", "reveived:", req.body);
             const aws = (state: string, data: any) => {
                 res.status(state == "error" ? 400 : 200);
-                if (typeof data == "string") res.send(data);
-                else res.json(data);
+                res.json({data});
             };
             let client: postClient | null = null;
             try {
@@ -105,7 +104,7 @@ export class postClient {
                 this.client.suspect();
                 return;
             }
-            if (json.data === null) {
+            if (typeof json.data == "undefined") {
                 aws("error", "data");
                 debug("POST", "send:", "error", "data");
                 return;
diff --git a/tests/post.js b/tests/post.js
index 0b99f1a..7cbe8e5 100644
--- a/tests/post.js
+++ b/tests/post.js
@@ -1,3 +1,131 @@
-async function postTester(){
+import WebSocket from 'ws';
+import { uts, wait } from '../dist/sys/tools.js';
+import post from "./tests/post.js"
+import { spawn } from "child_process";
+import { oConf } from "../dist/sys/config.js"
+import mariadb from "mariadb";
 
+let inCI = process.argv.includes("ci");
+
+oConf.connect(inCI ? 'test.juml' : 'testLocal.juml');
+
+const connection = await mariadb.createConnection({
+    host: oConf.get("Database", "host"),
+    port: oConf.get("Database", "port"),
+    user: oConf.get("Database", "user"),
+    password: oConf.get("Database", "password"),
+    database: oConf.get("Database", "database"),
+    multipleStatements: true
+});
+await wait(100);
+
+let req = await connection.query("SELECT table_name as n FROM information_schema.tables WHERE table_schema = ?;", [oConf.get("Database", "database")]);
+let sql = [...req].map(d => "DROP TABLE IF EXISTS `" + d.n + "`;").join("");
+if (sql.length > 5) await connection.query("SET FOREIGN_KEY_CHECKS = 0;" + sql + "SET FOREIGN_KEY_CHECKS = 1;", []);
+connection.close();
+
+function shallowEqual(object1, object2) {
+    const keys1 = Object.keys(object1);
+    const keys2 = Object.keys(object2);
+    if (keys1.length < keys2.length) {
+        return false;
+    }
+    for (let key of keys1) {
+        if (object1[key] != object2[key]) {
+            return false;
+        }
+    }
+    return true;
+}
+
+
+async function postTester(url) {
+    async function test(header, act, data, expState, expData) {
+        console.log("Testing Act:", act, "with Data:", data);
+        let fetchResp = await fetch(url + "api/" + act, {
+            method: "POST",
+            headers: Object.assign({
+                "Content-Type": "application/json"
+            }, header),
+            body: JSON.stringify({data})
+        });
+
+        let resp = {
+            state: fetchResp.status == 200 ? "ok" : "error",
+            data: (await fetchResp.json()).data
+        }
+
+        if (resp.state != expState) {
+            console.error(`Expected state: '${expState}', but got: '${resp.state}'`);
+            kill();
+            process.exit(1);
+        }
+        if (typeof expData == "object" && expData != null) {
+            if (!shallowEqual(expData, resp.data)) {
+                console.error(`Expected data: '${expData}', but got: '${resp.data}'`);
+                kill();
+                process.exit(1);
+            }
+        } else if (expData != null) {
+            if (expData != resp.data) {
+                console.error(`Expected data: '${expData}', but got: '${resp.data}'`);
+                kill();
+                process.exit(1);
+            }
+        }
+        return resp.data;
+    }
+
+    for (let i = 0; i < post.length; i++) {
+        const currTest = post[i];
+        console.log(`Testing '${currTest[0]}':`);
+        await wait(100);
+        let resp = true;
+        try {
+            resp = await currTest[1](test);
+        } catch (error) {
+            console.error("Test Error: ", error);
+            kill();
+            process.exit(1);
+        }
+        if (resp === false) {
+            console.log("Test respond with error indication!");
+            kill();
+            process.exit(1);
+        }
+    }
+}
+
+
+const ls = spawn('node', ['.', '-c', inCI ? 'test.juml' : 'testLocal.juml', '-d']);
+
+process.env["NODE_TLS_REJECT_UNAUTHORIZED"] = 0;
+
+ls.stdout.on('data', (data) => {
+    process.stdout.write(data);
+    if (data.includes("Listening...")) test();
+});
+
+ls.stderr.on('data', (data) => {
+    console.error(`stderr: ${data}`);
+});
+
+ls.on('close', (code) => {
+    console.log(`child process exited with code ${code}`);
+    process.exit(code);
+});
+
+function kill() {
+    ls.kill('SIGINT');
+}
+
+let startet = false;
+
+async function test() {
+    if (startet) return;
+    startet = true;
+    console.log("Start testing POST");
+    await postTester("https://localhost:7224/");
+    kill();
+    process.exit(0);
 }
\ No newline at end of file
diff --git a/tests/tests/post.js b/tests/tests/post.js
new file mode 100644
index 0000000..65b48fa
--- /dev/null
+++ b/tests/tests/post.js
@@ -0,0 +1,20 @@
+import { generateSigningKey, sign } from '../../dist/sys/crypto.js';
+
+let name1 = "testUser1";
+let name2 = "testUser2";
+let name3 = "testUser3";
+let accountKey = "123456789";
+
+let { privateKey, publicKey } = await generateSigningKey();
+
+const list = [
+    ["signup", async (req) => {
+        await req({}, "signup", {
+            name: name1,
+            server: "localhost:7224",
+            accountKey
+        }, "ok", "");
+    }]
+];
+
+export default list;
\ No newline at end of file
diff --git a/tests/ws.js b/tests/ws.js
index 310773e..8c2da23 100644
--- a/tests/ws.js
+++ b/tests/ws.js
@@ -180,7 +180,7 @@ let startet = false;
 async function test() {
     if (startet) return;
     startet = true;
-    console.log("Start testing");
+    console.log("Start testing WebSocket");
     await wsTester("wss://localhost:7224/");
     kill();
     process.exit(0);