Add params vs normal form test (#75937)

Inspired by a test in #75862.
dotnet · Nov 15, 2024 · 75e5769 · 75e5769
1 parent 220538f
commit 75e5769
Showing 1 changed file with 40 additions and 0 deletions.
diff --git a/src/Compilers/CSharp/Test/Emit3/OverloadResolutionPriorityTests.cs b/src/Compilers/CSharp/Test/Emit3/OverloadResolutionPriorityTests.cs
@@ -2780,4 +2780,44 @@ public static class E2
 
         CompileAndVerify([source, OverloadResolutionPriorityAttributeDefinition], expectedOutput: "E1.R(int)").VerifyDiagnostics();
     }
+
+    [Fact]
+    public void ParamsVsNormal_01()
+    {
+        var code = """
+            using System;
+            using System.Runtime.CompilerServices;
+
+            M1(1);
+
+            partial class Program
+            {
+                static void M1(int i) => throw null;
+                [OverloadResolutionPriority(1)]
+                static void M1(params int[] i) => Console.Write("params");
+            }
+            """;
+
+        CompileAndVerify([code, OverloadResolutionPriorityAttributeDefinition], expectedOutput: "params").VerifyDiagnostics();
+    }
+
+    [Fact]
+    public void ParamsVsNormal_02()
+    {
+        var code = """
+            using System;
+            using System.Runtime.CompilerServices;
+
+            M1(1);
+
+            partial class Program
+            {
+                [OverloadResolutionPriority(-1)]
+                static void M1(int i) => throw null;
+                static void M1(params int[] i) => Console.Write("params");
+            }
+            """;
+
+        CompileAndVerify([code, OverloadResolutionPriorityAttributeDefinition], expectedOutput: "params").VerifyDiagnostics();
+    }
 }