diff --git a/src/PerformanceTests/Tests/Enabled/CSharp_CA1416.cs b/src/PerformanceTests/Tests/Enabled/CSharp_CA1416.cs
index 4c64392625..404a5ff307 100644
--- a/src/PerformanceTests/Tests/Enabled/CSharp_CA1416.cs
+++ b/src/PerformanceTests/Tests/Enabled/CSharp_CA1416.cs
@@ -37,6 +37,42 @@ public void M1()
         field.M2();
     }}
 }}
+"));
+                name += "Unsupported";
+                sources.Add((name + "Unsupport", @$"
+using System;
+using PlatformCompatDemo.SupportedUnupported;
+
+class {name}
+{{
+    private B field = new B();
+    public void M1()
+    {{
+        field.M3();
+    }}
+}}
+"));
+
+                name += "Flow";
+                sources.Add((name, @$"
+using System;
+using PlatformCompatDemo.SupportedUnupported;
+
+class {name}
+{{
+    private B field = new B();
+    public void M1()
+    {{
+        if (OperatingSystem.IsWindowsVersionAtLeast(10, 2))
+        {{
+            field.M2();
+        }}
+        else
+        {{
+            field.M2();
+        }}
+    }}
+}}
 "));
             }
 
@@ -48,6 +84,8 @@ public class B
     {
         [SupportedOSPlatform(""Windows10.1.1.1"")]
         public void M2() { }
+        [UnsupportedOSPlatform(""macOS11.0.1"")]
+        public void M3() {}
     }
 }";
             sources.Add((nameof(targetTypesForTest), targetTypesForTest));
@@ -79,7 +117,7 @@ public async Task CA1416_DiagnosticsProduced()
                 throw new InvalidOperationException($"Expected no compilation diagnostics but found '{analysisResult.CompilationDiagnostics.Count}'");
             }
 
-            if (diagnostics.Length != 1 * Constants.Number_Of_Code_Files)
+            if (diagnostics.Length != 3 * Constants.Number_Of_Code_Files)
             {
                 throw new InvalidOperationException($"Expected '{1 * Constants.Number_Of_Code_Files:N0}' analyzer diagnostics but found '{diagnostics.Length}'");
             }