add and fix failing unit tests

Author: chandra-siri

google/cloud/storage/_experimental/asyncio/_utils.py

@@ -1,6 +1,6 @@
 import google_crc32c
 
-from google.cloud.storage import exceptions
+from google.api_core import exceptions
 
 def raise_if_no_fast_crc32c():
     """Check if the C-accelerated version of google-crc32c is available.
@@ -17,4 +17,4 @@ def raise_if_no_fast_crc32c():
             "The google-crc32c package is not installed with C support. "
             "Bidi reads require the C extension for data integrity checks."
             "For more information, see https://github.com/googleapis/python-crc32c."
-        )
+        )

tests/unit/asyncio/test_async_appendable_object_writer.py

@@ -15,6 +15,7 @@
 import pytest
 from unittest import mock
 
+from google.api_core import exceptions
 from google.cloud.storage._experimental.asyncio.async_appendable_object_writer import (
     AsyncAppendableObjectWriter,
 )
@@ -85,6 +86,23 @@ def test_init_with_optional_args(mock_write_object_stream, mock_client):
     )
 
 
+@mock.patch("google.cloud.storage._experimental.asyncio._utils.google_crc32c")
+@mock.patch(
+    "google.cloud.storage._experimental.asyncio.async_grpc_client.AsyncGrpcClient.grpc_client"
+)
+def test_init_raises_if_crc32c_c_extension_is_missing(
+    mock_grpc_client, mock_google_crc32c
+):
+    mock_google_crc32c.implementation = "python"
+
+    with pytest.raises(exceptions.NotFound) as exc_info:
+        AsyncAppendableObjectWriter(mock_grpc_client, "bucket", "object")
+
+    assert "The google-crc32c package is not installed with C support" in str(
+        exc_info.value
+    )
+
+
 @pytest.mark.asyncio
 @mock.patch(
     "google.cloud.storage._experimental.asyncio.async_appendable_object_writer._AsyncWriteObjectStream"

tests/unit/asyncio/test_async_multi_range_downloader.py

@@ -349,9 +349,7 @@ async def test_downloading_without_opening_should_throw_error(
         assert str(exc.value) == "Underlying bidi-gRPC stream is not open"
         assert not mrd.is_stream_open
 
-    @mock.patch(
-        "google.cloud.storage._experimental.asyncio.async_multi_range_downloader.google_crc32c"
-    )
+    @mock.patch("google.cloud.storage._experimental.asyncio._utils.google_crc32c")
     @mock.patch(
         "google.cloud.storage._experimental.asyncio.async_grpc_client.AsyncGrpcClient.grpc_client"
     )