chore: Setup ava and sinon test libraries

packages/backend/__tests__/backend.test.js

@@ -1,7 +0,0 @@
-'use strict';
-
-const backend = require('..');
-
-describe('backend', () => {
-    it('needs tests');
-});

packages/backend/package.json

@@ -6,7 +6,7 @@
     "dev": "nodemon --watch 'src/**/*.ts' --exec 'ts-node' src/app.ts",
     "build": "tsc",
     "start": "node dist/index.js",
-    "test": "echo \"Error: run tests from root\" && exit 1",
+    "test": "ava",
     "db:create": "ts-node ./bin/database/create.ts",
     "db:drop": "ts-node ./bin/database/drop.ts",
     "db:migration:create": "knex migrate:make",
@@ -56,7 +56,20 @@
     "@types/morgan": "^1.9.3",
     "@types/node": "^16.10.2",
     "@types/pg": "^8.6.1",
+    "ava": "^3.15.0",
     "nodemon": "^2.0.13",
+    "sinon": "^11.1.2",
     "ts-node": "^10.2.1"
+  },
+  "ava": {
+    "files": [
+      "test/**/*"
+    ],
+    "extensions": [
+      "ts"
+    ],
+    "require": [
+      "ts-node/register"
+    ]
   }
 }

packages/backend/test/sample.ts

@@ -0,0 +1,7 @@
+import test from 'ava';
+
+const fn = () => 'foo';
+
+test('fn() returns foo', t => {
+	t.is(fn(), 'foo');
+});