test: Add tests for user/package statistics

Signed-off-by: moson <moson@archlinux.org>

test/test_statistics.py

@@ -0,0 +1,125 @@
+import pytest
+from prometheus_client import REGISTRY, generate_latest
+
+from aurweb import cache, db, time
+from aurweb.models.account_type import TRUSTED_USER_ID, USER_ID
+from aurweb.models.package import Package
+from aurweb.models.package_base import PackageBase
+from aurweb.models.user import User
+from aurweb.statistics import Statistics, update_prometheus_metrics
+
+
+@pytest.fixture(autouse=True)
+def setup(db_test):
+    return
+
+
+@pytest.fixture(autouse=True)
+def clear_fakeredis_cache():
+    cache._redis.flushall()
+
+
+@pytest.fixture
+def test_data():
+    # Create some test data (users and packages)
+    with db.begin():
+        for i in range(10):
+            user = db.create(
+                User,
+                Username=f"test{i}",
+                Email=f"test{i}@example.org",
+                RealName=f"Test User {i}",
+                Passwd="testPassword",
+                AccountTypeID=USER_ID,
+            )
+
+            now = time.utcnow()
+            old = now - 60 * 60 * 24 * 8  # 8 days
+            older = now - 60 * 60 * 24 * 400  # 400 days
+
+            pkgbase = db.create(
+                PackageBase,
+                Name=f"test-package{i}",
+                Maintainer=user,
+                SubmittedTS=old,
+                ModifiedTS=now,
+            )
+            db.create(Package, PackageBase=pkgbase, Name=pkgbase.Name)
+
+            # Modify some data to get some variances for our counters
+            if i == 1:
+                user.AccountTypeID = TRUSTED_USER_ID
+                pkgbase.Maintainer = None
+                pkgbase.SubmittedTS = now
+
+            if i == 2:
+                pkgbase.SubmittedTS = older
+
+            if i == 3:
+                pkgbase.SubmittedTS = older
+                pkgbase.ModifiedTS = old
+    yield
+
+
+@pytest.fixture
+def stats() -> Statistics:
+    yield Statistics()
+
+
+@pytest.mark.parametrize(
+    "counter, expected",
+    [
+        ("package_count", 10),
+        ("orphan_count", 1),
+        ("seven_days_old_added", 1),
+        ("seven_days_old_updated", 8),
+        ("year_old_updated", 9),
+        ("never_updated", 1),
+        ("user_count", 10),
+        ("trusted_user_count", 1),
+        ("regular_user_count", 9),
+        ("updated_packages", 9),
+        ("nonsense", -1),
+    ],
+)
+def test_get_count(stats: Statistics, test_data, counter: str, expected: int):
+    assert stats.get_count(counter) == expected
+
+
+def test_get_count_change(stats: Statistics, test_data):
+    pkgs_before = stats.get_count("package_count")
+    tus_before = stats.get_count("trusted_user_count")
+
+    assert pkgs_before == 10
+    assert tus_before == 1
+
+    # Let's delete a package and promote a user to TU
+    with db.begin():
+        pkgbase = db.query(PackageBase).first()
+        db.delete(pkgbase)
+
+        user = db.query(User).filter(User.AccountTypeID == USER_ID).first()
+        user.AccountTypeID = TRUSTED_USER_ID
+
+    # Values should end up in (fake) redis cache so they should be the same
+    assert stats.get_count("package_count") == pkgs_before
+    assert stats.get_count("trusted_user_count") == tus_before
+
+    # Let's clear the cache and check again
+    cache._redis.flushall()
+    assert stats.get_count("package_count") != pkgs_before
+    assert stats.get_count("trusted_user_count") != tus_before
+
+
+def test_update_prometheus_metrics(test_data):
+    metrics = str(generate_latest(REGISTRY))
+
+    assert "aur_users{" not in metrics
+    assert "aur_packages{" not in metrics
+
+    # Let's update our metrics. We should find our gauges now
+    update_prometheus_metrics()
+    metrics = str(generate_latest(REGISTRY))
+
+    assert 'aur_users{type="user"} 9.0' in metrics
+    assert 'aur_packages{state="updated"} 9.0' in metrics