fix: update parameters to use IThatSubject in callbacks (#946)

This pull request primarily refactors the codebase to consistently use the `IThatSubject<T>` interface instead of `IThat<T>` for expectation actions across collection and exception assertion APIs. This change improves type safety and standardizes the way expectations are expressed throughout the library. Additionally, a build configuration change restricts the build scope to core components only.

### API Refactoring: Expectation Actions

* Updated all collection assertion methods (e.g., `ComplyWith`, `HasItemThat`, `Contains`, `IsEqualTo`, etc.) to accept `Action<IThatSubject<T>>` or `Action<IThatSubject<T?>>` instead of `Action<IThat<T>>` or `Action<IThat<T?>>`. This affects both synchronous (`IEnumerable<T>`) and asynchronous (`IAsyncEnumerable<T>`) collection APIs.

* Changed exception assertion methods (e.g., `WithInner`, `WithInnerException`, `Whose`, `Which`, etc.) to require expectation actions using `IThatSubject<T>` instead of `IThat<T>`.

* Updated internal classes and constructors to use `IThatSubject<T>` for expectation actions, ensuring consistency throughout the implementation.

### Build Configuration

* Changed the build scope in `Build.cs` from `BuildScope.Default` to `BuildScope.CoreOnly`, limiting the build process to core components.

Author: vbreuss

Pipeline/Build.cs

@@ -20,7 +20,7 @@ partial class Build : NukeBuild
 	///     <para />
 	///     Afterward, you can update the package reference in `Directory.Packages.props` and reset this flag.
 	/// </summary>
-	readonly BuildScope BuildScope = BuildScope.Default;
+	readonly BuildScope BuildScope = BuildScope.CoreOnly;
 
 	[Parameter("Github Token")] readonly string GithubToken;
 	[GitRepository] readonly GitRepository Repository;

Source/aweXpect.Core/Delegates/ThatDelegateThrows.Whose.cs

@@ -12,7 +12,7 @@ public partial class ThatDelegateThrows<TException>
 	/// </summary>
 	public AndOrResult<TException, ThatDelegateThrows<TException>> Whose<TMember>(
 		Func<TException, TMember?> memberSelector,
-		Action<IThat<TMember?>> expectations,
+		Action<IThatSubject<TMember?>> expectations,
 		[CallerArgumentExpression("memberSelector")]
 		string doNotPopulateThisValue = "")
 		=> new(ExpectationBuilder.ForMember(

Source/aweXpect.Core/Delegates/ThatDelegateThrows.WithInner.cs

@@ -15,7 +15,7 @@ public partial class ThatDelegateThrows<TException>
 	/// </summary>
 	public AndOrResult<TException, ThatDelegateThrows<TException>>
 		WithInner<TInnerException>(
-			Action<IThat<TInnerException?>> expectations)
+			Action<IThatSubject<TInnerException?>> expectations)
 		where TInnerException : Exception
 		=> new(ExpectationBuilder
 				.ForMember<Exception, Exception?>(e => e.InnerException,
@@ -45,7 +45,7 @@ public AndOrResult<TException, ThatDelegateThrows<TException>> WithInner<
 	/// </summary>
 	public AndOrResult<TException, ThatDelegateThrows<TException>> WithInner(
 		Type innerExceptionType,
-		Action<IThat<Exception?>> expectations)
+		Action<IThatSubject<Exception?>> expectations)
 		=> new(ExpectationBuilder
 				.ForMember<Exception, Exception?>(e => e.InnerException,
 					" whose ",

Source/aweXpect.Core/Delegates/ThatDelegateThrows.WithInnerException.cs

@@ -12,7 +12,7 @@ public partial class ThatDelegateThrows<TException>
 	///     satisfies the <paramref name="expectations" />.
 	/// </summary>
 	public AndOrResult<TException, ThatDelegateThrows<TException>> WithInnerException(
-		Action<IThat<Exception?>> expectations)
+		Action<IThatSubject<Exception?>> expectations)
 		=> new(ExpectationBuilder
 				.ForMember(
 					MemberAccessor<Exception?, Exception?>.FromFunc(

Source/aweXpect.Core/Options/CollectionMatchOptions.cs

@@ -367,15 +367,15 @@ public sealed class ExpectationItem<TItem>
 		internal readonly ManualExpectationBuilder<TItem> ItemExpectationBuilder;
 
 		/// <inheritdoc cref="ExpectationItem{TItem}" />
-		public ExpectationItem(Action<IThat<TItem>> expectation,
+		public ExpectationItem(Action<IThatSubject<TItem?>> expectation,
 			ExpectationGrammars grammars,
 			IEvaluationContext context,
 			CancellationToken cancellationToken)
 		{
 			_context = context;
 			_cancellationToken = cancellationToken;
 			ItemExpectationBuilder = new ManualExpectationBuilder<TItem>(null, grammars);
-			expectation.Invoke(new ThatSubject<TItem>(ItemExpectationBuilder));
+			expectation.Invoke(new ThatSubject<TItem?>(ItemExpectationBuilder));
 		}
 
 		/// <summary>

Source/aweXpect.Core/Results/AndOrWhichResult.cs

@@ -39,7 +39,7 @@ public class AndOrWhichResult<TType, TThat, TSelf>(
 	public AdditionalAndOrWhichResult
 		Which<TMember>(
 			Func<TType, TMember?> memberSelector,
-			Action<IThat<TMember?>> expectations,
+			Action<IThatSubject<TMember?>> expectations,
 			[CallerArgumentExpression("memberSelector")]
 			string doNotPopulateThisValue = "")
 		=> new(
@@ -71,7 +71,7 @@ public class AdditionalAndOrWhichResult(
 		public AdditionalAndOrWhichResult
 			AndWhich<TMember>(
 				Func<TType, TMember?> memberSelector,
-				Action<IThat<TMember?>> expectations,
+				Action<IThatSubject<TMember?>> expectations,
 				[CallerArgumentExpression("memberSelector")]
 				string doNotPopulateThisValue = "")
 		{

Source/aweXpect.Core/Results/AndOrWhoseResult.cs

@@ -39,7 +39,7 @@ public class AndOrWhoseResult<TType, TThat, TSelf>(
 	public AdditionalAndOrWhoseResult
 		Whose<TMember>(
 			Func<TType, TMember?> memberSelector,
-			Action<IThat<TMember?>> expectations,
+			Action<IThatSubject<TMember?>> expectations,
 			[CallerArgumentExpression("memberSelector")]
 			string doNotPopulateThisValue = "")
 		=> new(
@@ -71,7 +71,7 @@ public class AdditionalAndOrWhoseResult(
 		public AdditionalAndOrWhoseResult
 			AndWhose<TMember>(
 				Func<TType, TMember?> memberSelector,
-				Action<IThat<TMember?>> expectations,
+				Action<IThatSubject<TMember?>> expectations,
 				[CallerArgumentExpression("memberSelector")]
 				string doNotPopulateThisValue = "")
 		{

Source/aweXpect/That/Collections/ThatAsyncEnumerable.Contains.cs

@@ -170,7 +170,7 @@ public static CountResult<IAsyncEnumerable<TItem>, IThat<IAsyncEnumerable<TItem>
 	public static CollectionContainResult<IAsyncEnumerable<TItem>, IThat<IAsyncEnumerable<TItem>?>, TItem>
 		Contains<TItem>(
 			this IThat<IAsyncEnumerable<TItem>?> source,
-			IEnumerable<Action<IThat<TItem?>>> expected,
+			IEnumerable<Action<IThatSubject<TItem?>>> expected,
 			[CallerArgumentExpression("expected")]
 			string doNotPopulateThisValue = "")
 	{
@@ -336,7 +336,7 @@ public static CountResult<IAsyncEnumerable<TItem>, IThat<IAsyncEnumerable<TItem>
 	public static CollectionContainResult<IAsyncEnumerable<TItem>, IThat<IAsyncEnumerable<TItem>?>, TItem>
 		DoesNotContain<TItem>(
 			this IThat<IAsyncEnumerable<TItem>?> source,
-			IEnumerable<Action<IThat<TItem?>>> unexpected,
+			IEnumerable<Action<IThatSubject<TItem?>>> unexpected,
 			[CallerArgumentExpression("unexpected")]
 			string doNotPopulateThisValue = "")
 	{

Source/aweXpect/That/Collections/ThatAsyncEnumerable.Elements.ComplyWith.cs

@@ -20,7 +20,7 @@ public partial class Elements<TItem>
 		///     …comply with the <paramref name="expectations" />.
 		/// </summary>
 		public ObjectEqualityResult<IAsyncEnumerable<TItem>, IThat<IAsyncEnumerable<TItem>?>, TItem>
-			ComplyWith(Action<IThat<TItem>> expectations)
+			ComplyWith(Action<IThatSubject<TItem>> expectations)
 		{
 			ObjectEqualityOptions<TItem> options = new();
 			return new ObjectEqualityResult<IAsyncEnumerable<TItem>, IThat<IAsyncEnumerable<TItem>?>, TItem>(
@@ -45,7 +45,7 @@ private sealed class ComplyWithConstraint<TItem>
 
 		public ComplyWithConstraint(ExpectationBuilder expectationBuilder, string it, ExpectationGrammars grammars,
 			EnumerableQuantifier quantifier,
-			Action<IThat<TItem>> expectations) : base(grammars)
+			Action<IThatSubject<TItem>> expectations) : base(grammars)
 		{
 			_it = it;
 			_grammars = grammars;

Source/aweXpect/That/Collections/ThatAsyncEnumerable.HasItemThat.cs

@@ -20,7 +20,7 @@ public static partial class ThatAsyncEnumerable
 	///     Verifies that the collection has an item that complies with the <paramref name="expectations" />…
 	/// </summary>
 	public static HasItemResult<IAsyncEnumerable<TItem>?> HasItemThat<TItem>(
-		this IThat<IAsyncEnumerable<TItem>?> source, Action<IThat<TItem>> expectations)
+		this IThat<IAsyncEnumerable<TItem>?> source, Action<IThatSubject<TItem>> expectations)
 	{
 		CollectionIndexOptions indexOptions = new();
 		ExpectationBuilder expectationBuilder = source.Get().ExpectationBuilder;
@@ -44,7 +44,7 @@ private sealed class HasItemThatConstraint<TItem> : ConstraintResult.WithValue<I
 		public HasItemThatConstraint(ExpectationBuilder expectationBuilder,
 			string it,
 			ExpectationGrammars grammars,
-			Action<IThat<TItem>> expectations,
+			Action<IThatSubject<TItem>> expectations,
 			CollectionIndexOptions options) : base(grammars)
 		{
 			_expectationBuilder = expectationBuilder;