tests: add tests for MustBeValidEmail for Span<T> and Memory<T>

Signed-off-by: Kenny Pflug <kenny.pflug@live.de>

Author: feO2x

Code/Light.GuardClauses.Tests/ExecuteReadOnlySpanAssertion.cs

@@ -0,0 +1,26 @@
+#nullable enable
+using System;
+
+namespace Light.GuardClauses.Tests;
+
+public delegate void ExecuteReadOnlySpanAssertion<T>(
+    ReadOnlySpan<T> span,
+    ReadOnlySpanExceptionFactory<T> exceptionFactory
+);
+
+public delegate void ExecuteSpanAssertion<T>(
+    Span<T> span,
+    ReadOnlySpanExceptionFactory<T> exceptionFactory
+);
+
+public delegate void ExecuteReadOnlySpanAssertion<TItem, TValue>(
+    ReadOnlySpan<TItem> span,
+    TValue additionalValue,
+    ReadOnlySpanExceptionFactory<TItem, TValue> exceptionFactory
+);
+
+public delegate void ExecuteSpanAssertion<TItem, TValue>(
+    Span<TItem> span,
+    TValue additionalValue,
+    ReadOnlySpanExceptionFactory<TItem, TValue> exceptionFactory
+);