Replace url segment

src/RestSharp/Request/RestRequestExtensions.Url.cs

@@ -26,7 +26,7 @@ public static partial class RestRequestExtensions {
         /// <param name="encode">Encode the value or not, default true</param>
         /// <returns></returns>
         public RestRequest AddUrlSegment(string name, string? value, bool encode = true)
-            => request.AddParameter(new UrlSegmentParameter(name, value, encode));
+            => request.AddOrUpdateParameter(new UrlSegmentParameter(name, value, encode));
 
         /// <summary>
         /// Adds a URL segment parameter to the request. The resource URL must have a placeholder for the parameter for it to work.

test/RestSharp.Tests/Parameters/UrlSegmentTests.cs

@@ -54,20 +54,33 @@ public void UrlSegmentParameter_WithValueWithEncodedSlash_WillReplaceEncodedSlas
         var urlSegmentParameter = new UrlSegmentParameter("foo", inputValue);
         urlSegmentParameter.Value.Should().BeEquivalentTo("bar/BAR");
     }
-    
+
     [Theory]
     [InlineData("bar%2fBAR")]
     [InlineData("bar%2FBAR")]
     public void UrlSegmentParameter_WithValueWithEncodedSlash_CanReplaceEncodedSlash(string inputValue) {
         var urlSegmentParameter = new UrlSegmentParameter("foo", inputValue, replaceEncodedSlash: true);
         urlSegmentParameter.Value.Should().BeEquivalentTo("bar/BAR");
     }
-    
+
     [Theory]
     [InlineData("bar%2fBAR")]
     [InlineData("bar%2FBAR")]
     public void UrlSegmentParameter_WithValueWithEncodedSlash_CanLeaveEncodedSlash(string inputValue) {
         var urlSegmentParameter = new UrlSegmentParameter("foo", inputValue, replaceEncodedSlash: false);
         urlSegmentParameter.Value.Should().BeEquivalentTo(inputValue);
     }
+
+    [Fact]
+    public void AddSameUrlSegmentTwice_ShouldReplaceFirst() {
+        var client  = new RestClient();
+        var request = new RestRequest("https://api.example.com/orgs/{segment}/something");
+        request.AddUrlSegment("segment", 1);
+        var url1 = client.BuildUri(request);
+        request.AddUrlSegment("segment", 2);
+        var url2 = client.BuildUri(request);
+
+        url1.AbsolutePath.Should().Be("/orgs/1/something");
+        url2.AbsolutePath.Should().Be("/orgs/2/something");
+    }
 }

test/RestSharp.Tests/UrlBuilderTests.Get.cs

@@ -198,4 +198,30 @@ public void GET_wth_trailing_slash_and_query_parameters() {
         var output = client.BuildUri(request);
         Assert.Equal(expected, output);
     }
+
+    [Fact]
+    public void Multiple_query_parameters_with_same_name() {
+        var request = new RestRequest($"/{Resource}/")
+            .AddQueryParameter("foo", "bar")
+            .AddQueryParameter("foo", "baz");
+        var expected = new Uri($"{Base}/{Resource}/?foo=bar&foo=baz");
+
+        using var client = new RestClient(Base);
+
+        var output = client.BuildUri(request);
+        Assert.Equal(expected, output);
+    }
+
+    [Fact]
+    public void Query_parameter_with_non_string_value() {
+        var request = new RestRequest($"/{Resource}/")
+            .AddQueryParameter("foo", 123)
+            .AddQueryParameter("bar", true);
+        var expected = new Uri($"{Base}/{Resource}/?foo=123&bar=True");
+
+        using var client = new RestClient(Base);
+
+        var output = client.BuildUri(request);
+        Assert.Equal(expected, output);
+    }
 }