Enhance IMDS Tests for Improved Code Coverage

[gladjohn]

Overview

This pull request introduces changes to the Managed Identity tests to enhance code coverage, particularly for error handling scenarios involving HTTP status codes like BadRequest, BadGateway, and GatewayTimeout. The improvements include parameterized tests to efficiently handle multiple scenarios with varied HTTP status responses.

Code Coverage Improvement: From the baseline coverage of 82.74% to 82.86%

Changes Proposed

• Modified ImdsTests to use [DataTestMethod] for handling various HTTP error scenarios in a single consolidated test method.
• Added multiple mock handlers to simulate retries for GatewayTimeout to reflect real-world behavior and ensure the retry logic is covered.
• Included test scenarios for BadRequest and BadGateway to ensure proper error handling and logging are in place.

Testing

• unit tests

Performance Impact

• None

Documentation

• N/A