diff --git a/sites/cosmotetv.gr/cosmotetv.gr.test.js b/sites/cosmotetv.gr/cosmotetv.gr.test.js
new file mode 100644
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+++ b/sites/cosmotetv.gr/cosmotetv.gr.test.js
@@ -0,0 +1,81 @@
+const { parser, url, channels } = require('./cosmotetv.gr.config.js')
+const dayjs = require('dayjs')
+const utc = require('dayjs/plugin/utc')
+const customParseFormat = require('dayjs/plugin/customParseFormat')
+const timezone = require('dayjs/plugin/timezone')
+const axios = require('axios')
+
+dayjs.extend(utc)
+dayjs.extend(customParseFormat)
+dayjs.extend(timezone)
+
+jest.mock('axios')
+
+const date = dayjs.utc('2024-12-26', 'YYYY-MM-DD').startOf('d')
+const channel = { site_id: 'vouli', xmltv_id: 'HellenicParliamentTV.gr' }
+
+const mockChannelData = {
+  "channels": [
+    {
+      "guid": "XTV100000954",
+      "title": "ΒΟΥΛΗ HD",
+      "callSign": "vouli",
+      "logos": {
+        "square": "https://tr.static.cdn.cosmotetvott.gr/ote-prod/channel_logos/vouli1-normal.png",
+        "wide": "https://tr.static.cdn.cosmotetvott.gr/ote-prod/channel_logos/vouli1-wide.png"
+      }
+    }
+  ]
+}
+
+const mockEpgData = {
+  "channels": [
+    {
+      "items": [
+        {
+          "startTime": "2024-12-26T23:00:00+00:00",
+          "endTime": "2024-12-27T00:00:00+00:00",
+          "title": "Τι Λέει ο Νόμος",
+          "description": "νημερωτική εκπομπή. Συζήτηση με τους εισηγητές των κομμάτων για το νομοθετικό έργο.",
+          "qoe": {
+            "genre": "Special"
+          },
+          "thumbnails": {
+            "standard": "https://gr-ermou-prod-cache05.static.cdn.cosmotetvott.gr/ote-prod/70/280/040029714812000800_1734415727199.jpg"
+          }
+        }
+      ]
+    }
+  ]
+}
+
+it('can generate valid url', () => {
+  const startOfDay = dayjs(date).startOf('day').utc().unix()
+  const endOfDay = dayjs(date).endOf('day').utc().unix()
+  expect(url({ date, channel })).toBe(`https://mwapi-prod.cosmotetvott.gr/api/v3.4/epg/listings/el?from=${startOfDay}&to=${endOfDay}&callSigns=${channel.site_id}&endingIncludedInRange=false`)
+})
+
+it('can parse response', () => {
+  const content = JSON.stringify(mockEpgData)
+  const result = parser({ date, content }).map(p => {
+    p.start = dayjs(p.start).toISOString()
+    p.stop = dayjs(p.stop).toISOString()
+    return p
+  })
+
+  expect(result).toMatchObject([
+    {
+      title: "Τι Λέει ο Νόμος",
+      description: "νημερωτική εκπομπή. Συζήτηση με τους εισηγητές των κομμάτων για το νομοθετικό έργο.",
+      category: "Special",
+      image: "https://gr-ermou-prod-cache05.static.cdn.cosmotetvott.gr/ote-prod/70/280/040029714812000800_1734415727199.jpg",
+      start: "2024-12-26T23:00:00.000Z",
+      stop: "2024-12-27T00:00:00.000Z"
+    }
+  ])
+})
+
+it('can handle empty guide', () => {
+  const result = parser({ date, channel, content: '{"date":"2024-12-26","categories":[],"channels":[]}' });
+  expect(result).toMatchObject([])
+})