From 1ff37057ae76ec0d88e341de52fe7f1f5331d3d4 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Martin=20St=C3=BChmer?= <me@samtrion.net>
Date: Thu, 20 Nov 2025 16:17:14 +0100
Subject: [PATCH 1/2] test: Extended `ThrowIfNullOrEmpty` tests

---
 .../ArgumentTests_ThrowIfNullOrEmpty.cs            | 14 +++++++++++---
 1 file changed, 11 insertions(+), 3 deletions(-)

diff --git a/tests/NetEvolve.Arguments.Tests.Unit/ArgumentTests_ThrowIfNullOrEmpty.cs b/tests/NetEvolve.Arguments.Tests.Unit/ArgumentTests_ThrowIfNullOrEmpty.cs
index 23adad3..6a6a3e3 100644
--- a/tests/NetEvolve.Arguments.Tests.Unit/ArgumentTests_ThrowIfNullOrEmpty.cs
+++ b/tests/NetEvolve.Arguments.Tests.Unit/ArgumentTests_ThrowIfNullOrEmpty.cs
@@ -58,9 +58,17 @@ public void ThrowIfNullOrEmpty_WhenIEnumerableNull_ThrowsArgumentNullException()
         _ = Assert.Throws<ArgumentNullException>(nameof(argument), Act);
     }
 
+    [Test]
+    [MethodDataSource(nameof(ThrowIfNullOrEmptyEnumerableData))]
+    public void ThrowIfNullOrEmpty_WhenIEnumerableEmpty_ThrowsArgumentNullException(IEnumerable<string>? argument)
+    {
+        // Act
+        void Act() => Argument.ThrowIfNullOrEmpty(argument);
+
+        // Assert
+        _ = Assert.Throws<ArgumentNullException>(nameof(argument), Act);
+    }
+
     public static IEnumerable<IEnumerable<string>> ThrowIfNullOrEmptyEnumerableData =>
         [Array.Empty<string>(), new List<string>(), new HashSet<string>()];
-
-    public static IEnumerable<IEnumerable<string>> ThrowIfNullOrEmptyEnumerableWithData =>
-        [new[] { "argument" }, new List<string> { "argument" }, new HashSet<string> { "argument" }];
 }

From 7bc9d5e6b40a51df260db819e1b0a90b6bbca353 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Martin=20St=C3=BChmer?= <me@samtrion.net>
Date: Thu, 20 Nov 2025 16:23:11 +0100
Subject: [PATCH 2/2] fix(test): Wrong Exception Type

---
 .../ArgumentTests_ThrowIfNullOrEmpty.cs       | 19 +++++++++++++++++--
 1 file changed, 17 insertions(+), 2 deletions(-)

diff --git a/tests/NetEvolve.Arguments.Tests.Unit/ArgumentTests_ThrowIfNullOrEmpty.cs b/tests/NetEvolve.Arguments.Tests.Unit/ArgumentTests_ThrowIfNullOrEmpty.cs
index 6a6a3e3..acfff47 100644
--- a/tests/NetEvolve.Arguments.Tests.Unit/ArgumentTests_ThrowIfNullOrEmpty.cs
+++ b/tests/NetEvolve.Arguments.Tests.Unit/ArgumentTests_ThrowIfNullOrEmpty.cs
@@ -2,6 +2,7 @@
 
 using System;
 using System.Collections.Generic;
+using System.Threading.Tasks;
 using TUnit.Assertions.Extensions;
 
 public sealed partial class ArgumentTests
@@ -60,15 +61,29 @@ public void ThrowIfNullOrEmpty_WhenIEnumerableNull_ThrowsArgumentNullException()
 
     [Test]
     [MethodDataSource(nameof(ThrowIfNullOrEmptyEnumerableData))]
-    public void ThrowIfNullOrEmpty_WhenIEnumerableEmpty_ThrowsArgumentNullException(IEnumerable<string>? argument)
+    public void ThrowIfNullOrEmpty_WhenIEnumerableEmpty_ThrowsArgumentException(IEnumerable<string>? argument)
     {
         // Act
         void Act() => Argument.ThrowIfNullOrEmpty(argument);
 
         // Assert
-        _ = Assert.Throws<ArgumentNullException>(nameof(argument), Act);
+        _ = Assert.Throws<ArgumentException>(nameof(argument), Act);
+    }
+
+    [Test]
+    [MethodDataSource(nameof(ThrowIfNullOrEmptyEnumerableWithData))]
+    public async Task ThrowIfNullOrEmpty_WhenIEnumerableEmpty_Expected(IEnumerable<string>? argument)
+    {
+        // Act
+        Argument.ThrowIfNullOrEmpty(argument);
+
+        // Assert
+        _ = await Assert.That(argument).IsNotNull().And.IsNotEmpty();
     }
 
     public static IEnumerable<IEnumerable<string>> ThrowIfNullOrEmptyEnumerableData =>
         [Array.Empty<string>(), new List<string>(), new HashSet<string>()];
+
+    public static IEnumerable<IEnumerable<string>> ThrowIfNullOrEmptyEnumerableWithData =>
+        [new[] { "argument" }, new List<string> { "argument" }, new HashSet<string> { "argument" }];
 }