diff --git a/src/EditorFeatures/CSharpTest/SimplifyInterpolation/SimplifyInterpolationTests.cs b/src/EditorFeatures/CSharpTest/SimplifyInterpolation/SimplifyInterpolationTests.cs
index 14ec4ae09304c618ce419b74b19e686478f8cd4d..3a223112b21270742de05fcbb6abef3c66b1ecb0 100644
--- a/src/EditorFeatures/CSharpTest/SimplifyInterpolation/SimplifyInterpolationTests.cs
+++ b/src/EditorFeatures/CSharpTest/SimplifyInterpolation/SimplifyInterpolationTests.cs
@@ -528,6 +528,38 @@ void M(string someValue)
     {
         _ = $""prefix {someValue.PadLeft(3),3} suffix"";
     }
+}");
+        }
+
+        [Fact]
+        public async Task PadLeftThenPadRight_WithoutAlignment()
+        {
+            await TestInRegularAndScriptAsync(
+@"class C
+{
+    void M(string someValue)
+    {
+        _ = $""prefix {someValue.PadLeft(3){|Unnecessary:[||].PadRight(|}3{|Unnecessary:)|}} suffix"";
+    }
+}", @"class C
+{
+    void M(string someValue)
+    {
+        _ = $""prefix {someValue.PadLeft(3),3} suffix"";
+    }
+}");
+        }
+
+        [Fact]
+        public async Task PadLeftThenPadRight_WithAlignment()
+        {
+            await TestMissingAsync(
+@"class C
+{
+    void M(string someValue)
+    {
+        _ = $""prefix {someValue.PadLeft(3)[||].PadRight(3),3} suffix"";
+    }
 }");
         }
     }