test(integration): add comprehensive tests

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[Copilot]

Pull Request Overview

This PR adds comprehensive integration tests for the pycouchdb library, significantly expanding test coverage with over 100 new test functions covering authentication, SSL/HTTPS connections, concurrent operations, large data handling, Unicode support, edge cases, and advanced CouchDB features.

• Authentication tests for basic auth success/failure scenarios and non-auth connections
• Advanced feature tests including design documents, views, replication, and changes feed handling
• Error scenario tests with simulated bad-behaving CouchDB server for timeout, malformed JSON, and network failures

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
test/integration/test_integration.py	Adds 80+ comprehensive test functions covering authentication, SSL, concurrency, large data, Unicode, edge cases, and advanced CouchDB features
test/integration/test_error_scenarios.py	Adds new test module with simulated bad CouchDB server for testing error handling scenarios

Comments suppressed due to low confidence (1)

test/integration/test_integration.py:1

• Debug print statement should be removed from test code as it adds unnecessary output during test execution.

# -*- coding: utf-8 -*-

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