Python: Improved AzureAI Package Test Coverage

[giles17]

Motivation and Context

Increases unit test coverage for the azure-ai package from 76% to 91%, exceeding the 85% target.
Resolves #3353

Description

Contribution Checklist

• The code builds clean without any errors or warnings
• The PR follows the Contribution Guidelines
• All unit tests pass, and I have added new tests where possible
• Is this a breaking change? If yes, add "[BREAKING]" prefix to the title of the PR.

[markwallace-microsoft]

Python Test Coverage Report •

File	Stmts	Miss	Cover	Missing
TOTAL	17029	2384	86%

report-only-changed-files is enabled. No files were changed during this commit :)

Python Unit Test Overview

Tests	Skipped	Failures	Errors	Time
3429	213 💤	0 ❌	0 🔥	1m 7s ⏱️

[Copilot]

Pull request overview

Increases unit test coverage for the python/packages/azure-ai package by adding new tests around shared conversion utilities and client/provider behaviors (notably MCP tooling and Azure Monitor configuration).

Changes:

• Added a new test_shared.py suite covering _shared.py conversion helpers (tools, response_format, MCP config).
• Expanded tests for AzureAIClient.configure_azure_monitor and MCP tool preparation logic.
• Added coverage for provider/tool merging and additional Azure AI agent client edge cases.

Reviewed changes

Copilot reviewed 5 out of 5 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
python/packages/azure-ai/tests/test_shared.py	New tests for _shared conversion functions (tools, MCP, response format).
python/packages/azure-ai/tests/test_provider.py	Adds a test ensuring tool-merge behavior skips dict function tools while preserving hosted tools.
python/packages/azure-ai/tests/test_azure_ai_client.py	Adds tests for Azure Monitor configuration paths and MCP tool preparation.
python/packages/azure-ai/tests/test_azure_ai_agent_client.py	Adds tests for response_format handling, tool resources, MCP resources, message preparation, and tool preparation.
python/packages/azure-ai/tests/test_agent_provider.py	Adds tests validating dict-format function tools require implementations and related integration-test import refactors.