Update SA1010 for indices and ranges

Author: sharwell

StyleCop.Analyzers/StyleCop.Analyzers.Test.CSharp8/SpacingRules/SA1010CSharp8UnitTests.cs

@@ -3,9 +3,75 @@
 
 namespace StyleCop.Analyzers.Test.CSharp8.SpacingRules
 {
+    using System.Threading;
+    using System.Threading.Tasks;
+    using Microsoft.CodeAnalysis.Testing;
     using StyleCop.Analyzers.Test.CSharp7.SpacingRules;
+    using Xunit;
+    using static StyleCop.Analyzers.SpacingRules.SA1010OpeningSquareBracketsMustBeSpacedCorrectly;
+    using static StyleCop.Analyzers.Test.Verifiers.StyleCopCodeFixVerifier<
+        StyleCop.Analyzers.SpacingRules.SA1010OpeningSquareBracketsMustBeSpacedCorrectly,
+        StyleCop.Analyzers.SpacingRules.TokenSpacingCodeFixProvider>;
 
     public partial class SA1010CSharp8UnitTests : SA1010CSharp7UnitTests
     {
+        [Fact]
+        [WorkItem(3008, "https://github.com/DotNetAnalyzers/StyleCopAnalyzers/issues/3008")]
+        public async Task TestIndexAndRangeOpenBracketSpacingAsync()
+        {
+            var testCode = @"
+namespace TestNamespace
+{
+    using System;
+
+    public class TestClass
+    {
+        public void TestMethod(int[] values)
+        {
+            _ = values {|#0:[|}^1];
+            _ = values{|#1:[|} ^1];
+            _ = values {|#2:[|} ^1];
+            _ = values {|#3:[|}1..^2];
+            _ = values{|#4:[|} 1..^2];
+            _ = values[..];
+            _ = values{|#5:[|} ..];
+        }
+    }
+}
+";
+            var fixedCode = @"
+namespace TestNamespace
+{
+    using System;
+
+    public class TestClass
+    {
+        public void TestMethod(int[] values)
+        {
+            _ = values[^1];
+            _ = values[^1];
+            _ = values[^1];
+            _ = values[1..^2];
+            _ = values[1..^2];
+            _ = values[..];
+            _ = values[..];
+        }
+    }
+}
+";
+
+            DiagnosticResult[] expected =
+            {
+                Diagnostic(DescriptorNotPreceded).WithLocation(0),
+                Diagnostic(DescriptorNotFollowed).WithLocation(1),
+                Diagnostic(DescriptorNotPreceded).WithLocation(2),
+                Diagnostic(DescriptorNotFollowed).WithLocation(2),
+                Diagnostic(DescriptorNotPreceded).WithLocation(3),
+                Diagnostic(DescriptorNotFollowed).WithLocation(4),
+                Diagnostic(DescriptorNotFollowed).WithLocation(5),
+            };
+
+            await VerifyCSharpFixAsync(testCode, expected, fixedCode, CancellationToken.None).ConfigureAwait(false);
+        }
     }
 }