diff --git a/backend/tests/test_api.py b/backend/tests/test_api.py
index 3a47f10..4cbb309 100644
--- a/backend/tests/test_api.py
+++ b/backend/tests/test_api.py
@@ -34,3 +34,24 @@ def test_prices_random_list():
     first = items[0]
     assert "item" in first and "price" in first and "currency" in first
     assert all(item["price"] <= 3 for item in items)
+
+
+def test_build_history():
+    response = client.get("/builds")
+    assert response.status_code == 200
+    body = response.json()
+    builds = body["builds"]
+    assert isinstance(builds, list)
+    assert len(builds) >= 1
+
+    first = builds[0]
+    assert "number" in first and "status" in first and "branch" in first
+
+    # Ensure descending order by build number
+    numbers = [build["number"] for build in builds]
+    assert numbers == sorted(numbers, reverse=True)
+
+    failed_builds = [build for build in builds if build["status"] == "failed"]
+    if failed_builds:
+        failed = failed_builds[0]
+        assert "failed_stage" in failed and "fun_message" in failed