Added jest config and first tests

jest.config.js

@@ -0,0 +1,4 @@
+module.exports = {
+  preset: 'ts-jest',
+  testEnvironment: 'node',
+};

src/tests/api_docs.spec.ts

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+import axios from 'axios';
+import { config } from '../config';
+const base = "http://localhost:" + config.internal_port
+
+describe('GET /api/docs/openapi.json', () => {
+	it('OpenAPI Spec is availdable 200', async () => {
+		const res = await axios.get(base + '/api/docs/openapi.json');
+		expect(res.status).toEqual(200);
+	});
+});
+describe('GET /api/docs/swagger.json', () => {
+	it('OpenAPI Spec is availdable 200', async () => {
+		const res = await axios.get(base + '/api/docs/swagger.json');
+		expect(res.status).toEqual(200);
+	});
+});
+describe('GET /api/docs/swaggerui', () => {
+	it('swaggerui is availdable 200', async () => {
+		const res = await axios.get(base + '/api/docs/swaggerui');
+		expect(res.status).toEqual(200);
+	});
+});
+describe('GET /api/docs/redoc', () => {
+	it('redoc is availdable 200', async () => {
+		const res = await axios.get(base + '/api/docs/redoc');
+		expect(res.status).toEqual(200);
+	});
+});
+describe('GET /api/docs/rapidoc', () => {
+	it('rapidoc is availdable 200', async () => {
+		const res = await axios.get(base + '/api/docs/rapidoc');
+		expect(res.status).toEqual(200);
+	});
+});