Fix: Add regression test for range read retry issue and bump dependency to fix (#1338)

Author: andrewsg

setup.py

@@ -31,7 +31,7 @@
     "google-auth >= 2.26.1, < 3.0dev",
     "google-api-core >= 2.15.0, <3.0.0dev",
     "google-cloud-core >= 2.3.0, < 3.0dev",
-    "google-resumable-media >= 2.6.0",
+    "google-resumable-media >= 2.7.2",
     "requests >= 2.18.0, < 3.0.0dev",
     "google-crc32c >= 1.0, < 2.0dev",
 ]

tests/conformance/test_conformance.py

@@ -115,6 +115,17 @@ def blob_download_to_filename_chunked(client, _preconditions, **resources):
     assert stored_contents == data
 
 
+def blob_download_to_filename_range(client, _preconditions, **resources):
+    bucket = resources.get("bucket")
+    file, data = resources.get("file_data")
+    blob = client.bucket(bucket.name).blob(file.name)
+    with tempfile.NamedTemporaryFile() as temp_f:
+        blob.download_to_filename(temp_f.name, start=1024, end=512 * 1024)
+        with open(temp_f.name, "r") as file_obj:
+            stored_contents = file_obj.read()
+    assert stored_contents == data[1024 : 512 * 1024 + 1]
+
+
 def client_download_blob_to_file(client, _preconditions, **resources):
     bucket = resources.get("bucket")
     file, data = resources.get("file_data")
@@ -748,6 +759,7 @@ def object_acl_clear(client, _preconditions, **resources):
         client_download_blob_to_file,
         blob_download_to_filename,
         blob_download_to_filename_chunked,
+        blob_download_to_filename_range,
         blob_download_as_bytes,
         blob_download_as_text,
         blobreader_read,
@@ -756,6 +768,7 @@ def object_acl_clear(client, _preconditions, **resources):
         client_download_blob_to_file,
         blob_download_to_filename,
         blob_download_to_filename_chunked,
+        blob_download_to_filename_range,
         blob_download_as_bytes,
         blob_download_as_text,
         blobreader_read,