verifying GetSegmentName

src/Prism.Core/Common/UriParsingHelper.cs

@@ -72,7 +72,7 @@ public static INavigationParameters GetSegmentParameters(string uriSegment, INav
         {
             var navParameters = GetSegmentParameters(uriSegment);
 
-            if (parameters != null)
+            if (parameters is not null)
             {
                 foreach (KeyValuePair<string, object> navigationParameter in parameters)
                 {
@@ -154,7 +154,14 @@ public static INavigationParameters ParseQuery(Uri uri)
         /// <param name="uri">A uri string.</param>
         /// <returns>A <see cref="Uri"/>.</returns>
         /// <exception cref="ArgumentNullException">Throws an <see cref="ArgumentNullException"/> when the string is null or empty.</exception>
-        public static Uri Parse(string uri) => uri.StartsWith("/", StringComparison.Ordinal) ? new Uri("http://localhost" + uri, UriKind.Absolute) : new Uri(uri, UriKind.RelativeOrAbsolute);
+        public static Uri Parse(string uri)
+        {
+            ArgumentNullException.ThrowIfNull(uri);
+
+            return uri.StartsWith("/", StringComparison.Ordinal)
+                ? new Uri("http://localhost" + uri, UriKind.Absolute)
+                : new Uri(uri, UriKind.RelativeOrAbsolute);
+        }
 
         /// <summary>
         /// This will provide the existing <see cref="Uri"/> if it is already Absolute, otherwise

tests/Maui/Prism.Maui.Tests/Fixtures/Common/UriParsingHelperFixture.cs

@@ -92,6 +92,13 @@ public void ParametersParsedFromNavigationParametersInAbsoluteUri()
         Assert.Equal("dan", parameters["name"]);
     }
 
+    [Fact]
+    public void TargetNameParsedFromEmptySegment()
+    {
+        var target = UriParsingHelper.GetSegmentName(string.Empty);
+        Assert.Equal(string.Empty, target);
+    }
+
     [Fact]
     public void TargetNameParsedFromSingleSegment()
     {