[cDAC] Dumptest Stackwalker Improvements

[max-charlamb]

Adds tools to better add stack tests

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[Copilot]

Pull request overview

This PR introduces a new DumpTestStackWalker helper class to simplify writing stack frame validation tests in the cDAC dump test suite, and adds three new tests demonstrating its usage.

Changes:

• Adds DumpTestStackWalker helper class with fluent API for asserting stack frame sequences with support for adjacency checking, predicate matching, and flexible inner-to-outer/outer-to-inner traversal
• Adds new tests validating expected frame sequences in StackWalk, PInvokeStub, and VarargPInvoke dump tests
• Updates RunDumpTests.ps1 to compute and pass skip versions to the test build, improving test filtering when running subset of versions

Reviewed changes

Copilot reviewed 5 out of 5 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
DumpTestStackWalker.cs	New helper class providing fluent API for stack frame assertions with support for adjacency, predicates, and directional traversal
StackWalkDumpTests.cs	Adds test validating the expected frame sequence (MethodC → MethodB → MethodA → Main) using the new helper
VarargPInvokeDumpTests.cs	Adds test validating vararg P/Invoke stack frames including ILStub frame detection using predicate matching
PInvokeStubDumpTests.cs	Adds test validating P/Invoke stack frames (memcpy → CrashInILStubPInvoke → Main)
RunDumpTests.ps1	Enhances script to compute and pass skipped versions to test build via MSBuild property

[Copilot]

The parameter name Adjacent should be lowercase adjacent to follow C# naming conventions. Parameter names should use camelCase, not PascalCase.

Suggested change

	public Expectation(string name, bool Adjacent, Action<ResolvedFrame>? assert)
	{
	_name = name;
	_predicate = null;
	_assert = assert;
	this.Adjacent = Adjacent;
	Description = name;
	}
	public Expectation(Func<ResolvedFrame, bool> predicate, string description, bool Adjacent, Action<ResolvedFrame>? assert)
	{
	_name = null;
	_predicate = predicate;
	_assert = assert;
	this.Adjacent = Adjacent;
	public Expectation(string name, bool adjacent, Action<ResolvedFrame>? assert)
	{
	_name = name;
	_predicate = null;
	_assert = assert;
	this.Adjacent = adjacent;
	Description = name;
	}
	public Expectation(Func<ResolvedFrame, bool> predicate, string description, bool adjacent, Action<ResolvedFrame>? assert)
	{
	_name = null;
	_predicate = predicate;
	_assert = assert;
	this.Adjacent = adjacent;

[Copilot]

The parameter name Adjacent should be lowercase adjacent to follow C# naming conventions. Parameter names should use camelCase, not PascalCase.

Suggested change

	public Expectation(string name, bool Adjacent, Action<ResolvedFrame>? assert)
	{
	_name = name;
	_predicate = null;
	_assert = assert;
	this.Adjacent = Adjacent;
	Description = name;
	}
	public Expectation(Func<ResolvedFrame, bool> predicate, string description, bool Adjacent, Action<ResolvedFrame>? assert)
	{
	_name = null;
	_predicate = predicate;
	_assert = assert;
	this.Adjacent = Adjacent;
	public Expectation(string name, bool adjacent, Action<ResolvedFrame>? assert)
	{
	_name = name;
	_predicate = null;
	_assert = assert;
	this.Adjacent = adjacent;
	Description = name;
	}
	public Expectation(Func<ResolvedFrame, bool> predicate, string description, bool adjacent, Action<ResolvedFrame>? assert)
	{
	_name = null;
	_predicate = predicate;
	_assert = assert;
	this.Adjacent = adjacent;