From c74bd44ad71da184525ce7581848dd2a3f88bc43 Mon Sep 17 00:00:00 2001
From: eriawan <eriawan@live.com>
Date: Sun, 6 Oct 2024 04:40:49 +0700
Subject: [PATCH] Refactor StreamReader_StringCtorTests accordingly as Encoding
 param has been set to nullable

---
 .../StreamReader/StreamReader.StringCtorTests.cs              | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/src/libraries/System.Runtime/tests/System.IO.Tests/StreamReader/StreamReader.StringCtorTests.cs b/src/libraries/System.Runtime/tests/System.IO.Tests/StreamReader/StreamReader.StringCtorTests.cs
index b96ed8532d383..0e5a7af0ed194 100644
--- a/src/libraries/System.Runtime/tests/System.IO.Tests/StreamReader/StreamReader.StringCtorTests.cs
+++ b/src/libraries/System.Runtime/tests/System.IO.Tests/StreamReader/StreamReader.StringCtorTests.cs
@@ -19,10 +19,6 @@ public static void NullArgs_ThrowsArgumentNullException()
             AssertExtensions.Throws<ArgumentNullException>("path", () => new StreamReader((string)null, null, true));
             AssertExtensions.Throws<ArgumentNullException>("path", () => new StreamReader((string)null, null, true, null));
             AssertExtensions.Throws<ArgumentNullException>("path", () => new StreamReader((string)null, null, true, -1));
-            AssertExtensions.Throws<ArgumentNullException>("encoding", () => new StreamReader("path", (Encoding)null));
-            AssertExtensions.Throws<ArgumentNullException>("encoding", () => new StreamReader("path", null, true));
-            AssertExtensions.Throws<ArgumentNullException>("encoding", () => new StreamReader("path", null, true, null));
-            AssertExtensions.Throws<ArgumentNullException>("encoding", () => new StreamReader("path", null, true, -1));
             AssertExtensions.Throws<ArgumentNullException>("options", () => new StreamReader("path", (FileStreamOptions)null));
             AssertExtensions.Throws<ArgumentNullException>("options", () => new StreamReader("path", Encoding.UTF8, true, null));