diff --git a/tests/__init__.py b/tests/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/tests/conftest.py b/tests/conftest.py
new file mode 100644
index 0000000..fc3e22d
--- /dev/null
+++ b/tests/conftest.py
@@ -0,0 +1,29 @@
+from functools import cache
+
+import pytest
+import requests
+from PIL import Image
+
+
+@cache
+def _sample_image():
+    url = "https://i.imgur.com/E5OVXvn.png"
+    resp = requests.get(url, stream=True)
+    return Image.open(resp.raw)
+
+
+@cache
+def _sample_image2():
+    url = "https://i.imgur.com/px5UT7T.png"
+    resp = requests.get(url, stream=True)
+    return Image.open(resp.raw)
+
+
+@pytest.fixture()
+def sample_image():
+    return _sample_image()
+
+
+@pytest.fixture()
+def sample_image2():
+    return _sample_image2()
diff --git a/tests/test_mediapipe.py b/tests/test_mediapipe.py
new file mode 100644
index 0000000..7ddcdfe
--- /dev/null
+++ b/tests/test_mediapipe.py
@@ -0,0 +1,18 @@
+import pytest
+from PIL import Image
+
+from adetailer.mediapipe import mediapipe_predict
+
+
+@pytest.mark.parametrize(
+    "model_name",
+    [
+        "mediapipe_face_short",
+        "mediapipe_face_full",
+        "mediapipe_face_mesh",
+        "mediapipe_face_mesh_eyes_only",
+    ],
+)
+def test_mediapipe(sample_image2: Image.Image, model_name: str):
+    result = mediapipe_predict(model_name, sample_image2)
+    assert result.preview is not None
diff --git a/tests/test_ultralytics.py b/tests/test_ultralytics.py
new file mode 100644
index 0000000..ad855ad
--- /dev/null
+++ b/tests/test_ultralytics.py
@@ -0,0 +1,48 @@
+import pytest
+from huggingface_hub import hf_hub_download
+from PIL import Image
+
+from adetailer.ultralytics import ultralytics_predict
+
+repo_id = "Bingsu/adetailer"
+
+
+@pytest.mark.parametrize(
+    "model_name",
+    [
+        "face_yolov8n.pt",
+        "face_yolov8n_v2.pt",
+        "face_yolov8s.pt",
+        "hand_yolov8n.pt",
+        "hand_yolov8s.pt",
+        "person_yolov8n-seg.pt",
+        "person_yolov8s-seg.pt",
+        "person_yolov8m-seg.pt",
+        "deepfashion2_yolov8s-seg.pt",
+    ],
+)
+def test_ultralytics_hf_models(sample_image: Image.Image, model_name: str):
+    model_path = hf_hub_download(repo_id, model_name)
+    result = ultralytics_predict(model_path, sample_image)
+    assert result.preview is not None
+
+
+def test_yolo_world_default(sample_image: Image.Image):
+    result = ultralytics_predict("yolov8l-world.pt", sample_image)
+    assert result.preview is not None
+
+
+@pytest.mark.parametrize(
+    "klass",
+    [
+        "person",
+        "bird",
+        "yellow bird",
+        "person,glasses,headphone",
+        "person,bird",
+        "glasses,yellow bird",
+    ],
+)
+def test_yolo_world(sample_image2: Image.Image, klass: str):
+    result = ultralytics_predict("yolov8l-world.pt", sample_image2, classes=klass)
+    assert result.preview is not None