diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 86cf7b3..778fe44 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -24,4 +24,10 @@ jobs:
         run: pip install -r requirements.txt
 
       - name: Test with pytest
-        run: env $(cat .env.example | grep -v '^#' | xargs) python -m pytest --cov --disable-warnings -q
\ No newline at end of file
+        run: env $(cat .env.example | grep -v '^#' | xargs) python -m pytest --cov --disable-warnings -q --cov-report xml:coverage.xml
+
+      - name: Get coverage
+        uses: orgoro/coverage@v3.1
+        with:
+            coverageFile: coverage.xml
+            token: ${{ secrets.GITHUB_TOKEN }}
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diff --git a/tests/bot/cogs/ext/tcg/test_utils.py b/tests/bot/cogs/ext/tcg/test_utils.py
new file mode 100644
index 0000000..26f9e75
--- /dev/null
+++ b/tests/bot/cogs/ext/tcg/test_utils.py
@@ -0,0 +1,17 @@
+import unittest
+
+from bot.cogs.ext.tcg.utils import calculate_elo
+
+
+class TestCalculateElo(unittest.TestCase):
+    def test_zero_rating(self):
+        rating_winner = 0.0
+        rating_loser = 0.0
+
+        self.assertEqual(20.0, calculate_elo(rating_winner, rating_loser))
+
+    def test_non_zero_rating(self):
+        rating_winner = 10.0
+        rating_loser = 20.0
+
+        self.assertEqual(20.6, calculate_elo(rating_winner, rating_loser))
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