🧹 Cleanup readme

README.md

@@ -75,6 +75,10 @@ async def main():
 if __name__ == '__main__':
     asyncio.run(main())
 ```
+## Supported OCR Services
+- [x] [Google Cloud Vision](https://cloud.google.com/vision)
+- [ ] [Amazon Textract](https://aws.amazon.com/textract/) (Coming Soon)
+- [ ] [Microsoft Azure Computer Vision](https://azure.microsoft.com/en-us/services/cognitive-services/computer-vision/) (Coming Soon)
 
 ## Roadmap
 - [x] Add documentation and examples

tarsier/ocr/google.py

@@ -1,9 +1,9 @@
-from typing import Any, Dict, List
+from typing import Any, Dict
 
 from google.cloud import vision
 
 from tarsier.ocr._base import OCRService
-from tarsier.ocr.types import ImageAnnotation, ImageAnnotatorResponse
+from tarsier.ocr.types import ImageAnnotatorResponse
 
 
 class GoogleVisionOCRService(OCRService):
@@ -13,7 +13,11 @@ def __init__(self, credentials: Dict[str, Any]):
                 credentials
             )
         except Exception:  # TODO: specify exception
-            raise ValueError("OCR client creation from credentials failed.")
+            raise ValueError(
+                "OCR client creation from credentials failed.\n"
+                "Google your google cloud vision credentials can be created here:\n"
+                "https://console.cloud.google.com/apis/api/vision.googleapis.com"
+            )
 
         text_detection = vision.Feature()
         text_detection.type_ = vision.Feature.Type.TEXT_DETECTION  # type: ignore

tests/ocr/test_google.py

@@ -0,0 +1,12 @@
+import pytest
+
+from tarsier import GoogleVisionOCRService
+
+
+def test_invalid_credentials():
+    with pytest.raises(ValueError):
+        GoogleVisionOCRService(
+            {
+                "type": "service_account",
+            }
+        )