From 35f500af0f1d29619af2802005b59986b89ddf35 Mon Sep 17 00:00:00 2001
From: Aaro Koivukangas <aaro@koivukangas.cc>
Date: Sat, 8 Aug 2026 15:27:15 +0300
Subject: [PATCH] [TestNowHeader] Add small tests for the x-test-now header

---
 .../backend/tests/api/testTimeHeader.test.ts  | 38 +++++++++++++++++++
 1 file changed, 38 insertions(+)
 create mode 100644 services/backend/tests/api/testTimeHeader.test.ts

diff --git a/services/backend/tests/api/testTimeHeader.test.ts b/services/backend/tests/api/testTimeHeader.test.ts
new file mode 100644
index 000000000..9a464dafd
--- /dev/null
+++ b/services/backend/tests/api/testTimeHeader.test.ts
@@ -0,0 +1,38 @@
+import express from 'express'
+import request from 'supertest'
+import { describe, it, assert } from 'vitest'
+
+import { testTimeMiddleware } from '../../src/middleware/testTime'
+import { now } from '../../src/util/clock'
+
+describe('test time middleware', () => {
+  it('uses the date from the x-test-now header', async () => {
+    const app = express()
+    app.use(testTimeMiddleware)
+    app.get('/', (_request, response) => response.send(now().toISOString()))
+
+    const response = await request(app).get('/').set('x-test-now', '2026-03-01T12:00:00.000Z')
+
+    assert.strictEqual(response.text, '2026-03-01T12:00:00.000Z')
+  })
+
+  it('the acual current date if x-test-now header missing', async () => {
+    const app = express()
+    app.use(testTimeMiddleware)
+    app.get('/', (_request, response) => response.send(now().toISOString()))
+
+    const response = await request(app).get('/')
+
+    assert.notStrictEqual(response.text, '2026-03-01T12:00:00.000Z')
+  })
+
+  it('the acual current date if x-test-now header has incorrect date', async () => {
+    const app = express()
+    app.use(testTimeMiddleware)
+    app.get('/', (_request, response) => response.send(now().toISOString()))
+
+    const response = await request(app).get('/').set('x-test-now', 'moimoi mitä kuuluu')
+
+    assert.notStrictEqual(response.text, '2026-03-01T12:00:00.000Z')
+  })
+})