From eb64fcd208039d92c1ffc3de463a7faa940534bc Mon Sep 17 00:00:00 2001
From: Tom Hvitved <hvitved@github.com>
Date: Fri, 20 Mar 2026 11:16:43 +0100
Subject: [PATCH] C#: Add test that shows unintended flow summary generation

---
 .../dataflow/CaptureContentSummaryModels.expected           | 1 +
 csharp/ql/test/utils/modelgenerator/dataflow/Summaries.cs   | 6 ++++++
 2 files changed, 7 insertions(+)

diff --git a/csharp/ql/test/utils/modelgenerator/dataflow/CaptureContentSummaryModels.expected b/csharp/ql/test/utils/modelgenerator/dataflow/CaptureContentSummaryModels.expected
index cb6fc390349..47769d299c3 100644
--- a/csharp/ql/test/utils/modelgenerator/dataflow/CaptureContentSummaryModels.expected
+++ b/csharp/ql/test/utils/modelgenerator/dataflow/CaptureContentSummaryModels.expected
@@ -1,2 +1,3 @@
 unexpectedModel
+| Unexpected contentbased-summary found: Models;HigherOrderParameters;false;Apply;(System.Func<System.Object,System.Object>,System.Object);;Argument[1];ReturnValue;value;dfc-generated |
 expectedModel
diff --git a/csharp/ql/test/utils/modelgenerator/dataflow/Summaries.cs b/csharp/ql/test/utils/modelgenerator/dataflow/Summaries.cs
index b59513504d9..4c85b397ac1 100644
--- a/csharp/ql/test/utils/modelgenerator/dataflow/Summaries.cs
+++ b/csharp/ql/test/utils/modelgenerator/dataflow/Summaries.cs
@@ -536,6 +536,12 @@ public class HigherOrderParameters
     {
         a(o);
     }
+
+    private void CallApply()
+    {
+        // Test that this call to `Apply` does not interfere with the flow summaries generated for `Apply`
+        Apply(x => x, null);
+    }
 }
 
 public static class HigherOrderExtensionMethods