Suppress xUnit1026 where it can't be reasonably fixed

See xunit/xunit#1556

Author: sharwell

StyleCop.Analyzers/StyleCop.Analyzers.Test/ReadabilityRules/SA1116UnitTests.cs

@@ -1,6 +1,10 @@
 // Copyright (c) Tunnel Vision Laboratories, LLC. All Rights Reserved.
 // Licensed under the Apache License, Version 2.0. See LICENSE in the project root for license information.
 
+// Several test methods in this file use the same member data, but in some cases the test does not use all of the
+// supported parameters. See https://github.com/xunit/xunit/issues/1556.
+#pragma warning disable xUnit1026 // Theory methods should use all of their parameters
+
 namespace StyleCop.Analyzers.Test.ReadabilityRules
 {
     using System.Collections.Generic;

StyleCop.Analyzers/StyleCop.Analyzers.Test/ReadabilityRules/SA1117UnitTests.cs

@@ -1,6 +1,10 @@
 // Copyright (c) Tunnel Vision Laboratories, LLC. All Rights Reserved.
 // Licensed under the Apache License, Version 2.0. See LICENSE in the project root for license information.
 
+// Several test methods in this file use the same member data, but in some cases the test does not use all of the
+// supported parameters. See https://github.com/xunit/xunit/issues/1556.
+#pragma warning disable xUnit1026 // Theory methods should use all of their parameters
+
 namespace StyleCop.Analyzers.Test.ReadabilityRules
 {
     using System.Collections.Generic;

StyleCop.Analyzers/StyleCop.Analyzers.Test/ReadabilityRules/SA1121UnitTests.cs

@@ -1,6 +1,10 @@
 // Copyright (c) Tunnel Vision Laboratories, LLC. All Rights Reserved.
 // Licensed under the Apache License, Version 2.0. See LICENSE in the project root for license information.
 
+// Several test methods in this file use the same member data, but in some cases the test does not use all of the
+// supported parameters. See https://github.com/xunit/xunit/issues/1556.
+#pragma warning disable xUnit1026 // Theory methods should use all of their parameters
+
 namespace StyleCop.Analyzers.Test.ReadabilityRules
 {
     using System;