Add Assert StartsWith/DoesNotStartWith, EndsWith/DoesNotEndsWith, Mat…

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…chesRegex/DoesNotMatchRegex

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@copilot can you add unit tests for these?

[Copilot]

Pull Request Overview

This pull request adds a set of new string assertion methods to the test framework, covering prefix, suffix, and regular expression matching validations. Key changes include the addition of StartsWith/DoesNotStartWith, EndsWith/DoesNotEndWith, and MatchesRegex/DoesNotMatchRegex assertion APIs.

Reviewed Changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 1 comment.

File	Description
src/TestFramework/TestFramework/Assertions/Assert.StartsWith.cs	Adds assertions for checking if a string starts with a given substring.
src/TestFramework/TestFramework/Assertions/Assert.Matches.cs	Introduces assertions for regex matching and non-matching validations.
src/TestFramework/TestFramework/Assertions/Assert.EndsWith.cs	Provides assertions for verifying suffix conditions of strings.

Comments suppressed due to low confidence (1)

src/TestFramework/TestFramework/Assertions/Assert.Matches.cs:155

• The summary for DoesNotMatchRegex uses 'MatchesRegex' in its description, which may cause confusion. Consider updating the text to clarify that the exception is thrown when the string actually matches the regular expression.

/// Tests whether the specified string does not match a regular expression and throws an exception if the string MatchesRegex the expression.