diff --git a/tests/test_paddleocr_api.py b/tests/test_paddleocr_api.py
index 873f262732..9c23f27296 100644
--- a/tests/test_paddleocr_api.py
+++ b/tests/test_paddleocr_api.py
@@ -5,7 +5,7 @@
 
 @pytest.fixture
 def ocr():
-    return PaddleOCR(lang="en")
+    return PaddleOCR(lang="ch")
 
 
 @pytest.fixture
@@ -13,25 +13,25 @@ def img():
     return cv2.imread("doc/imgs/1.jpg")
 
 
-def test_ocr_with_detection_and_recognition(ocr, img):
-    result = ocr.ocr(img, det=True, rec=True)
-    assert result is not None
-    assert isinstance(result, list)
-
-
-def test_ocr_with_detection_only(ocr, img):
-    result = ocr.ocr(img, det=True, rec=False)
+@pytest.mark.parametrize(
+    "det, rec", [(True, True), (True, False), (False, True), (False, False)]
+)
+def test_ocr_det_rec_api(ocr, img, det, rec):
+    result = ocr.ocr(img, det=det, rec=rec)
     assert result is not None
     assert isinstance(result, list)
 
 
-def test_ocr_with_recognition_only(ocr, img):
-    result = ocr.ocr(img, det=False, rec=True)
+def test_ocr_fp16():
+    ocr = PaddleOCR(lang="ch", use_angle_cls=True, precision=True)
+    img = cv2.imread("doc/imgs/1.jpg")
+    result = ocr.ocr(img, det=True, rec=True)
     assert result is not None
     assert isinstance(result, list)
 
 
-def test_ocr_without_detection_and_recognition(ocr, img):
-    result = ocr.ocr(img, det=False, rec=False)
-    assert result is not None
-    assert isinstance(result, list)
+def test_ocr_with_none_image():
+    ocr = PaddleOCR(lang="ch")
+    img = None
+    with pytest.raises(AssertionError):
+        ocr.ocr(img, det=True, rec=True)