Relaxed more constraints.

Author: MrKWatkins

src/MrKWatkins.Assertions.Tests/ObjectAssertionsTests.cs

@@ -20,6 +20,16 @@ public async Task BeNull_ValueType()
         await Assert.That(() => notNullValue.Should().BeNull()).Throws<AssertionException>().WithMessage("Value should be null but was 123.");
     }
 
+    [Test]
+    public async Task BeNull_NullableValueType()
+    {
+        int? nullValue = null;
+        int? notNullValue = 123;
+
+        await Assert.That(() => nullValue.Should().BeNull()).ThrowsNothing();
+        await Assert.That(() => notNullValue.Should().BeNull()).Throws<AssertionException>().WithMessage("Value should be null but was 123.");
+    }
+
     [Test]
     public async Task NotBeNull_ReferenceType()
     {
@@ -38,6 +48,16 @@ public async Task NotBeNull_ValueType()
         await Assert.That(() => notNullValue.Should().NotBeNull()).ThrowsNothing();
     }
 
+    [Test]
+    public async Task NotBeNull_NullableValueType()
+    {
+        int? nullValue = null;
+        int? notNullValue = 123;
+
+        await Assert.That(() => nullValue.Should().NotBeNull()).Throws<AssertionException>().WithMessage("Value should not be null.");
+        await Assert.That(() => notNullValue.Should().NotBeNull()).ThrowsNothing();
+    }
+
     [Test]
     public async Task NotBeNull_Chain()
     {

src/MrKWatkins.Assertions/ShouldExtensions.cs

@@ -3,8 +3,7 @@ namespace MrKWatkins.Assertions;
 public static class ShouldExtensions
 {
     [Pure]
-    public static ObjectAssertions<T> Should<T>(this T? value)
-        where T : notnull => new(value);
+    public static ObjectAssertions<T> Should<T>(this T? value) => new(value);
 
     [Pure]
     public static EnumerableAssertions<IEnumerable<T>, T> Should<T>([NoEnumeration] this IEnumerable<T> value) => new(value);