Cloud + Python
Cloud SDK patterns — storage, serverless handlers, secrets, and deployment helpers.
How to Mock AWS SQS Send Receive Delete in Python
Build an in-memory mock of the SQS send, receive, and delete message flow for local testing.
import json
from collections import deque
from uuid import uuid4
class MockSQSQueue:
def __init__(self, name):
self.name = name
self._messages = deque()
self._in_flight = {}
def send_message(self, body, attributes=None):
message_id = str(uuid4())
message = {
…How to Mock Azure Service Bus Queue in Python
A lightweight in-memory mock of the Azure Service Bus queue API for local testing without cloud dependencies.
import json
import time
from collections import deque
class ServiceBusQueueMock:
def __init__(self, queue_name):
self.queue_name = queue_name
self._messages = deque()
self._dead_letter_queue = deque()
self._message_counter = 0
def send_message(self, body, message_id=None, prop…How to Mock DynamoDB with a Simple Dict Store in Python
A lightweight in-memory DynamoDB mock that stores items in a dict and supports put, get, and query-by-value operations for local testing.
import json
from typing import Any, Dict, Optional
class MockDynamoDB:
def __init__(self) -> None:
self._store: Dict[str, Dict[str, Any]] = {}
def put_item(self, table_name: str, item: Dict[str, Any]) -> None:
key = str(item.get("id"))
if table_name not in self._store:
se…Mock Azure Blob Upload and Download in Python
Simulate Azure Blob Storage upload and download operations with a lightweight in-memory mock class for testing.
import io
import json
from datetime import datetime, timezone
class MockBlob:
def __init__(self, name):
self.name = name
self.content = b""
self.properties = {
"last_modified": datetime.now(timezone.utc).isoformat(),
"size": 0,
}
def upload(self, data, …Mock Google Pub/Sub publish and pull in Python
A lightweight in-memory mock of Google Pub/Sub with publisher/subscriber classes to test topic-based fan-out and message pulling without real infrastructure.
import json
import time
from collections import deque
from dataclasses import dataclass, field
from typing import Any, Callable
@dataclass
class Message:
data: str
attributes: dict[str, str] = field(default_factory=dict)
message_id: str | None = None
ack_id: str | None = None
class MockPublisher:
…Mock SNS publish subscribe fanout in Python
Simulates AWS SNS publish/subscribe with an in-memory topic-to-endpoints dict that fans out messages to all subscribers.
class SNSMock:
def __init__(self):
self.topics = {}
def create_topic(self, name):
if name not in self.topics:
self.topics[name] = []
return f"arn:aws:sns:us-east-1:123456789012:{name}"
def subscribe(self, topic_name, endpoint):
self.topics.setdefault(topic_name…Browse by section
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