diff --git a/src/Docfx.Build.Common/ModelAttributeHandlers/ReflectionHelper.cs b/src/Docfx.Build.Common/ModelAttributeHandlers/ReflectionHelper.cs
index 41667a65bbb..1a04794eccc 100644
--- a/src/Docfx.Build.Common/ModelAttributeHandlers/ReflectionHelper.cs
+++ b/src/Docfx.Build.Common/ModelAttributeHandlers/ReflectionHelper.cs
@@ -36,7 +36,7 @@ public static object CreateInstance(Type type, Type[] typeArguments, Type[] argu
         ArgumentNullException.ThrowIfNull(arguments);
 
         var func = _createInstanceCache.GetOrAdd(
-            Tuple.Create(type, typeArguments ?? Type.EmptyTypes, argumentTypes),
+            Tuple.Create(type, typeArguments ?? [], argumentTypes),
             GetCreateInstanceFunc);
         return func(arguments);
     }
@@ -150,7 +150,7 @@ public static IEnumerable<PropertyInfo> GetPublicProperties(Type type)
     {
         if (!type.IsVisible)
         {
-            return Enumerable.Empty<PropertyInfo>();
+            return [];
         }
         return GetProperties(type, BindingFlags.Public | BindingFlags.Instance);
     }
diff --git a/src/Docfx.Build.Common/Reference/OverwriteDocumentModel.cs b/src/Docfx.Build.Common/Reference/OverwriteDocumentModel.cs
index 7d412822293..8ac8f568cbb 100644
--- a/src/Docfx.Build.Common/Reference/OverwriteDocumentModel.cs
+++ b/src/Docfx.Build.Common/Reference/OverwriteDocumentModel.cs
@@ -81,7 +81,7 @@ public class OverwriteDocumentModel
     [YamlIgnore]
     [Newtonsoft.Json.JsonIgnore]
     [System.Text.Json.Serialization.JsonIgnore]
-    public ImmutableArray<string> Dependency { get; set; } = ImmutableArray<string>.Empty;
+    public ImmutableArray<string> Dependency { get; set; } = [];
 
     public T ConvertTo<T>() where T : class
     {
diff --git a/src/Docfx.Build.Common/YamlHtmlPart.cs b/src/Docfx.Build.Common/YamlHtmlPart.cs
index cfc5d680e56..62e6649e4fb 100644
--- a/src/Docfx.Build.Common/YamlHtmlPart.cs
+++ b/src/Docfx.Build.Common/YamlHtmlPart.cs
@@ -21,9 +21,9 @@ public class YamlHtmlPart
 
     public int EndLine { get; set; }
 
-    public ImmutableArray<string> LinkToFiles { get; set; } = ImmutableArray<string>.Empty;
+    public ImmutableArray<string> LinkToFiles { get; set; } = [];
 
-    public ImmutableHashSet<string> LinkToUids { get; set; } = ImmutableHashSet<string>.Empty;
+    public ImmutableHashSet<string> LinkToUids { get; set; } = [];
 
     public ImmutableDictionary<string, object> YamlHeader { get; set; } = ImmutableDictionary<string, object>.Empty;
 
diff --git a/src/Docfx.Build/DocumentBuildContext.cs b/src/Docfx.Build/DocumentBuildContext.cs
index ba2d30408d6..3bdff81d6e8 100644
--- a/src/Docfx.Build/DocumentBuildContext.cs
+++ b/src/Docfx.Build/DocumentBuildContext.cs
@@ -55,7 +55,7 @@ from u in parameters.XRefMaps
     #region Constructors that used by test code.
 
     internal DocumentBuildContext(string buildOutputFolder)
-        : this(buildOutputFolder, Enumerable.Empty<FileAndType>(), ImmutableArray<string>.Empty, ImmutableArray<string>.Empty, 1, Directory.GetCurrentDirectory(), string.Empty, null, null) { }
+        : this(buildOutputFolder, [], [], [], 1, Directory.GetCurrentDirectory(), string.Empty, null, null) { }
 
     private DocumentBuildContext(string buildOutputFolder, IEnumerable<FileAndType> allSourceFiles, ImmutableArray<string> externalReferencePackages, ImmutableArray<string> xrefMaps, int maxParallelism, string baseFolder, string versionName, ApplyTemplateSettings applyTemplateSetting, string rootTocPath)
         : this(buildOutputFolder, allSourceFiles, externalReferencePackages, xrefMaps, maxParallelism, baseFolder, versionName, applyTemplateSetting, rootTocPath, null, null) { }
@@ -114,7 +114,7 @@ from u in xrefMaps
 
     public ApplyTemplateSettings ApplyTemplateSettings { get; set; }
 
-    public ImmutableArray<string> ExternalReferencePackages { get; } = ImmutableArray<string>.Empty;
+    public ImmutableArray<string> ExternalReferencePackages { get; } = [];
 
     public ImmutableDictionary<string, FileAndType> AllSourceFiles { get; }
 
diff --git a/src/Docfx.Build/DocumentBuildParameters.cs b/src/Docfx.Build/DocumentBuildParameters.cs
index 84a1a33b355..2356909b93e 100644
--- a/src/Docfx.Build/DocumentBuildParameters.cs
+++ b/src/Docfx.Build/DocumentBuildParameters.cs
@@ -13,13 +13,13 @@ public class DocumentBuildParameters
 
     public string OutputBaseDir { get; set; }
 
-    public ImmutableArray<string> XRefMaps { get; set; } = ImmutableArray<string>.Empty;
+    public ImmutableArray<string> XRefMaps { get; set; } = [];
 
     public ImmutableDictionary<string, object> Metadata { get; set; } = ImmutableDictionary<string, object>.Empty;
 
     public FileMetadata FileMetadata { get; set; }
 
-    public ImmutableArray<string> PostProcessors { get; set; } = ImmutableArray<string>.Empty;
+    public ImmutableArray<string> PostProcessors { get; set; } = [];
 
     public TemplateManager TemplateManager { get; set; }
 
diff --git a/src/Docfx.Build/ResourceFiles/ResourceDocumentProcessor.cs b/src/Docfx.Build/ResourceFiles/ResourceDocumentProcessor.cs
index 683d7044e3c..f3d5d736fd6 100644
--- a/src/Docfx.Build/ResourceFiles/ResourceDocumentProcessor.cs
+++ b/src/Docfx.Build/ResourceFiles/ResourceDocumentProcessor.cs
@@ -43,7 +43,7 @@ public override FileModel Load(FileAndType file, ImmutableDictionary<string, obj
     {
         return new FileModel(file, new Dictionary<string, object>())
         {
-            Uids = ImmutableArray<UidDefinition>.Empty,
+            Uids = [],
             LocalPathFromRoot = PathUtility.MakeRelativePath(
                 EnvironmentContext.BaseDirectory,
                 EnvironmentContext.FileAbstractLayer.GetPhysicalPath(file.File)),
diff --git a/src/Docfx.Common/CompositeDictionary.cs b/src/Docfx.Common/CompositeDictionary.cs
index 9077f5fdfa2..5415854b216 100644
--- a/src/Docfx.Common/CompositeDictionary.cs
+++ b/src/Docfx.Common/CompositeDictionary.cs
@@ -13,7 +13,7 @@ public class CompositeDictionary
 
     public CompositeDictionary()
     {
-        _entries = ImmutableArray<Entry>.Empty;
+        _entries = [];
     }
 
     private CompositeDictionary(ImmutableArray<Entry> entries)
diff --git a/src/Docfx.Dotnet/SymbolFormatter.Symbols.cs b/src/Docfx.Dotnet/SymbolFormatter.Symbols.cs
index 21144613837..35024286f7a 100644
--- a/src/Docfx.Dotnet/SymbolFormatter.Symbols.cs
+++ b/src/Docfx.Dotnet/SymbolFormatter.Symbols.cs
@@ -36,9 +36,9 @@ private class ParameterSymbol : IParameterSymbol
 
         public NullableAnnotation NullableAnnotation => default;
 
-        public ImmutableArray<CustomModifier> CustomModifiers => ImmutableArray<CustomModifier>.Empty;
+        public ImmutableArray<CustomModifier> CustomModifiers => [];
 
-        public ImmutableArray<CustomModifier> RefCustomModifiers => ImmutableArray<CustomModifier>.Empty;
+        public ImmutableArray<CustomModifier> RefCustomModifiers => [];
 
         public int Ordinal => 0;
 
diff --git a/src/Docfx.Dotnet/SymbolFormatter.Syntax.cs b/src/Docfx.Dotnet/SymbolFormatter.Syntax.cs
index d7929ea7e06..737ab8e086d 100644
--- a/src/Docfx.Dotnet/SymbolFormatter.Syntax.cs
+++ b/src/Docfx.Dotnet/SymbolFormatter.Syntax.cs
@@ -181,7 +181,7 @@ private void AddModifiersIfNeeded(ISymbol symbol)
         private ImmutableArray<SymbolDisplayPart> RemoveNamedTypeConstraints(ISymbol symbol)
         {
             if (symbol.Kind is not SymbolKind.NamedType)
-                return ImmutableArray<SymbolDisplayPart>.Empty;
+                return [];
 
             var result = ImmutableArray.CreateBuilder<SymbolDisplayPart>();
 
@@ -524,7 +524,7 @@ private ImmutableArray<SymbolDisplayPart> GetDisplayParts(ISymbol symbol, Symbol
             }
             catch
             {
-                return ImmutableArray<SymbolDisplayPart>.Empty;
+                return [];
             }
         }
     }
diff --git a/src/Docfx.Dotnet/SymbolFormatter.cs b/src/Docfx.Dotnet/SymbolFormatter.cs
index 514031f94fa..bc20ed4c83e 100644
--- a/src/Docfx.Dotnet/SymbolFormatter.cs
+++ b/src/Docfx.Dotnet/SymbolFormatter.cs
@@ -108,7 +108,7 @@ public static ImmutableArray<SymbolDisplayPart> GetSyntaxParts(ISymbol symbol, S
         }
         catch (InvalidOperationException)
         {
-            return ImmutableArray<SymbolDisplayPart>.Empty;
+            return [];
         }
     }
 
@@ -168,7 +168,7 @@ private static ImmutableArray<SymbolDisplayPart> GetDisplayParts(
         }
         catch
         {
-            return ImmutableArray<SymbolDisplayPart>.Empty;
+            return [];
         }
 
         static ImmutableArray<SymbolDisplayPart> GetCastOperatorOverloadDisplayParts(ImmutableArray<SymbolDisplayPart> parts)
diff --git a/src/Docfx.Plugins/FileModel.cs b/src/Docfx.Plugins/FileModel.cs
index ef1131c8616..7cfdb3c6369 100644
--- a/src/Docfx.Plugins/FileModel.cs
+++ b/src/Docfx.Plugins/FileModel.cs
@@ -85,5 +85,5 @@ public string File
 
     public string DocumentType { get; set; }
 
-    public ImmutableArray<UidDefinition> Uids { get; set; } = ImmutableArray<UidDefinition>.Empty;
+    public ImmutableArray<UidDefinition> Uids { get; set; } = [];
 }
diff --git a/src/Docfx.Plugins/MarkupResult.cs b/src/Docfx.Plugins/MarkupResult.cs
index d2772b65560..3715d4a8d23 100644
--- a/src/Docfx.Plugins/MarkupResult.cs
+++ b/src/Docfx.Plugins/MarkupResult.cs
@@ -9,9 +9,9 @@ public class MarkupResult
 {
     public string Html { get; set; }
     public ImmutableDictionary<string, object> YamlHeader { get; set; } = ImmutableDictionary<string, object>.Empty;
-    public ImmutableArray<string> LinkToFiles { get; set; } = ImmutableArray<string>.Empty;
-    public ImmutableHashSet<string> LinkToUids { get; set; } = ImmutableHashSet<string>.Empty;
-    public ImmutableArray<string> Dependency { get; set; } = ImmutableArray<string>.Empty;
+    public ImmutableArray<string> LinkToFiles { get; set; } = [];
+    public ImmutableHashSet<string> LinkToUids { get; set; } = [];
+    public ImmutableArray<string> Dependency { get; set; } = [];
     public ImmutableDictionary<string, ImmutableList<LinkSourceInfo>> UidLinkSources { get; set; } = ImmutableDictionary<string, ImmutableList<LinkSourceInfo>>.Empty;
     public ImmutableDictionary<string, ImmutableList<LinkSourceInfo>> FileLinkSources { get; set; } = ImmutableDictionary<string, ImmutableList<LinkSourceInfo>>.Empty;
 
diff --git a/src/Docfx.Plugins/SaveResult.cs b/src/Docfx.Plugins/SaveResult.cs
index 93d9a5b8283..ae1b7083b26 100644
--- a/src/Docfx.Plugins/SaveResult.cs
+++ b/src/Docfx.Plugins/SaveResult.cs
@@ -10,10 +10,10 @@ public class SaveResult
     public string DocumentType { get; set; }
     public string FileWithoutExtension { get; set; }
     public string ResourceFile { get; set; }
-    public ImmutableHashSet<string> LinkToUids { get; set; } = ImmutableHashSet<string>.Empty;
-    public ImmutableArray<string> LinkToFiles { get; set; } = ImmutableArray<string>.Empty;
-    public ImmutableArray<XRefSpec> XRefSpecs { get; set; } = ImmutableArray<XRefSpec>.Empty;
-    public ImmutableArray<XRefSpec> ExternalXRefSpecs { get; set; } = ImmutableArray<XRefSpec>.Empty;
+    public ImmutableHashSet<string> LinkToUids { get; set; } = [];
+    public ImmutableArray<string> LinkToFiles { get; set; } = [];
+    public ImmutableArray<XRefSpec> XRefSpecs { get; set; } = [];
+    public ImmutableArray<XRefSpec> ExternalXRefSpecs { get; set; } = [];
     public ImmutableDictionary<string, ImmutableList<LinkSourceInfo>> UidLinkSources { get; set; } = ImmutableDictionary<string, ImmutableList<LinkSourceInfo>>.Empty;
     public ImmutableDictionary<string, ImmutableList<LinkSourceInfo>> FileLinkSources { get; set; } = ImmutableDictionary<string, ImmutableList<LinkSourceInfo>>.Empty;
 }
diff --git a/test/Docfx.Build.ManagedReference.Tests/ManagedReferenceDocumentProcessorTest.cs b/test/Docfx.Build.ManagedReference.Tests/ManagedReferenceDocumentProcessorTest.cs
index 2e2aee978c5..61db56b0608 100644
--- a/test/Docfx.Build.ManagedReference.Tests/ManagedReferenceDocumentProcessorTest.cs
+++ b/test/Docfx.Build.ManagedReference.Tests/ManagedReferenceDocumentProcessorTest.cs
@@ -30,14 +30,14 @@ public ManagedReferenceDocumentProcessorTest()
         _outputFolder = GetRandomFolder();
         string inputFolder = GetRandomFolder();
         _defaultFiles = new FileCollection(Directory.GetCurrentDirectory());
-        _defaultFiles.Add(DocumentType.Article, new[] { "TestData/mref/CatLibrary.Cat-2.yml" }, "TestData/");
+        _defaultFiles.Add(DocumentType.Article, ["TestData/mref/CatLibrary.Cat-2.yml"], "TestData/");
         _applyTemplateSettings = new ApplyTemplateSettings(inputFolder, _outputFolder)
         {
             RawModelExportSettings = { Export = true },
             TransformDocument = true,
         };
 
-        _templateManager = new TemplateManager(new List<string> { "template" }, null, "TestData/");
+        _templateManager = new TemplateManager(["template"], null, "TestData/");
     }
 
     [Fact]
@@ -93,7 +93,7 @@ public void ProcessMrefWithComplexFileNameShouldSucceed()
     {
         FileCollection files = new(_defaultFiles);
         files.RemoveAll(s => true);
-        files.Add(DocumentType.Article, new string[] { "TestData/mref/Namespace1.Class1`2.yml", "TestData/mref/Namespace1.Class1`2.#ctor.yml" }, "TestData/");
+        files.Add(DocumentType.Article, ["TestData/mref/Namespace1.Class1`2.yml", "TestData/mref/Namespace1.Class1`2.#ctor.yml"], "TestData/");
         BuildDocument(files);
 
         var outputRawModelPath = GetRawModelFilePath("Namespace1.Class1`2.yml");
@@ -129,7 +129,7 @@ public void ProcessMrefWithXRefMapShouldSucceed()
     public void ProcessMrefWithDefaultOverwriteShouldSucceed()
     {
         FileCollection files = new(_defaultFiles);
-        files.Add(DocumentType.Overwrite, new[] { "TestData/overwrite/mref.overwrite.default.md" });
+        files.Add(DocumentType.Overwrite, ["TestData/overwrite/mref.overwrite.default.md"]);
         BuildDocument(files);
         {
             var outputRawModelPath = GetRawModelFilePath("CatLibrary.Cat-2.yml");
@@ -144,7 +144,7 @@ public void ProcessMrefWithDefaultOverwriteShouldSucceed()
     public void ProcessMrefWithSimpleOverwriteShouldSucceed()
     {
         FileCollection files = new(_defaultFiles);
-        files.Add(DocumentType.Overwrite, new[] { "TestData/overwrite/mref.overwrite.simple.md" });
+        files.Add(DocumentType.Overwrite, ["TestData/overwrite/mref.overwrite.simple.md"]);
         BuildDocument(files);
         var outputRawModelPath = GetRawModelFilePath("CatLibrary.Cat-2.yml");
         Assert.True(File.Exists(outputRawModelPath));
@@ -157,7 +157,7 @@ public void ProcessMrefWithSimpleOverwriteShouldSucceed()
     public void ProcessMrefWithParametersOverwriteShouldSucceed()
     {
         var files = new FileCollection(_defaultFiles);
-        files.Add(DocumentType.Overwrite, new[] { "TestData/overwrite/mref.overwrite.parameters.md" });
+        files.Add(DocumentType.Overwrite, ["TestData/overwrite/mref.overwrite.parameters.md"]);
         BuildDocument(files);
         var outputRawModelPath = GetRawModelFilePath("CatLibrary.Cat-2.yml");
         Assert.True(File.Exists(outputRawModelPath));
@@ -176,7 +176,7 @@ public void ProcessMrefWithParametersOverwriteShouldSucceed()
     public void ProcessMrefWithNotPredefinedOverwriteShouldSucceed()
     {
         FileCollection files = new(_defaultFiles);
-        files.Add(DocumentType.Overwrite, new[] { "TestData/overwrite/mref.overwrite.not.predefined.md" });
+        files.Add(DocumentType.Overwrite, ["TestData/overwrite/mref.overwrite.not.predefined.md"]);
         BuildDocument(files);
         {
             var outputRawModelPath = GetRawModelFilePath("CatLibrary.Cat-2.yml");
@@ -193,7 +193,7 @@ public void ProcessMrefWithDynamicDevLangsShouldSucceed()
     {
         FileCollection files = new(_defaultFiles);
         files.RemoveAll(s => true);
-        files.Add(DocumentType.Article, new[] { "TestData/mref/System.String.yml" }, "TestData/");
+        files.Add(DocumentType.Article, ["TestData/mref/System.String.yml"], "TestData/");
 
         BuildDocument(files);
 
@@ -214,8 +214,8 @@ public void ProcessMrefWithDynamicDevLangsShouldSucceed()
     public void ProcessMrefWithInvalidCrossReferenceShouldWarn()
     {
         var files = new FileCollection(Directory.GetCurrentDirectory());
-        files.Add(DocumentType.Article, new[] { "TestData/mref/System.String.yml" }, "TestData/");
-        files.Add(DocumentType.Overwrite, new[] { "TestData/overwrite/mref.overwrite.invalid.ref.md" });
+        files.Add(DocumentType.Article, ["TestData/mref/System.String.yml"], "TestData/");
+        files.Add(DocumentType.Overwrite, ["TestData/overwrite/mref.overwrite.invalid.ref.md"]);
 
         using var listener = new TestListenerScope(LogLevel.Info);
 
@@ -238,7 +238,7 @@ public void ProcessMrefWithInvalidCrossReferenceShouldWarn()
     public void ProcessMrefWithInvalidOverwriteShouldFail()
     {
         FileCollection files = new(_defaultFiles);
-        files.Add(DocumentType.Overwrite, new[] { "TestData/overwrite/mref.overwrite.invalid.md" });
+        files.Add(DocumentType.Overwrite, ["TestData/overwrite/mref.overwrite.invalid.md"]);
         Assert.Throws<DocumentException>(() => BuildDocument(files));
     }
 
@@ -246,7 +246,7 @@ public void ProcessMrefWithInvalidOverwriteShouldFail()
     public void ProcessMrefWithRemarksOverwriteShouldSucceed()
     {
         var files = new FileCollection(_defaultFiles);
-        files.Add(DocumentType.Overwrite, new[] { "TestData/overwrite/mref.overwrite.remarks.md" });
+        files.Add(DocumentType.Overwrite, ["TestData/overwrite/mref.overwrite.remarks.md"]);
         BuildDocument(files);
         {
             var outputRawModelPath = GetRawModelFilePath("CatLibrary.Cat-2.yml");
@@ -261,7 +261,7 @@ public void ProcessMrefWithRemarksOverwriteShouldSucceed()
     public void ProcessMrefWithMultiUidOverwriteShouldSucceed()
     {
         var files = new FileCollection(_defaultFiles);
-        files.Add(DocumentType.Overwrite, new[] { "TestData/overwrite/mref.overwrite.multi.uid.md" });
+        files.Add(DocumentType.Overwrite, ["TestData/overwrite/mref.overwrite.multi.uid.md"]);
         BuildDocument(files);
         {
             var outputRawModelPath = GetRawModelFilePath("CatLibrary.Cat-2.yml");
@@ -323,7 +323,7 @@ private void BuildDocument(FileCollection files)
             TemplateManager = _templateManager
         };
 
-        using var builder = new DocumentBuilder(LoadAssemblies(), ImmutableArray<string>.Empty);
+        using var builder = new DocumentBuilder(LoadAssemblies(), []);
         builder.Build(parameters);
     }
 
diff --git a/test/Docfx.Build.RestApi.Tests/RestApiDocumentProcessorTest.cs b/test/Docfx.Build.RestApi.Tests/RestApiDocumentProcessorTest.cs
index be4f94df864..b4bd7927a0a 100644
--- a/test/Docfx.Build.RestApi.Tests/RestApiDocumentProcessorTest.cs
+++ b/test/Docfx.Build.RestApi.Tests/RestApiDocumentProcessorTest.cs
@@ -154,7 +154,7 @@ public void ProcessSwaggerWithExternalReferenceShouldSucceed()
     public void ProcessSwaggerWithExternalEmbeddedReferenceShouldSucceed()
     {
         var files = new FileCollection(Directory.GetCurrentDirectory());
-        files.Add(DocumentType.Article, new[] { "TestData/swagger/contactsForExternalRef.json" }, "TestData/");
+        files.Add(DocumentType.Article, ["TestData/swagger/contactsForExternalRef.json"], "TestData/");
         BuildDocument(files);
 
         var outputRawModelPath = GetRawModelFilePath("contactsForExternalRef.json");
@@ -188,7 +188,7 @@ public void ProcessSwaggerWithNotExistedExternalReferenceShouldFail()
     public void ProcessSwaggerWithExternalReferenceHasRefInsideShouldFail()
     {
         var files = new FileCollection(Directory.GetCurrentDirectory());
-        files.Add(DocumentType.Article, new[] { "TestData/swagger/externalRefWithRefInside.json" }, "TestData/");
+        files.Add(DocumentType.Article, ["TestData/swagger/externalRefWithRefInside.json"], "TestData/");
         var listener = TestLoggerListener.CreateLoggerListenerWithCodeFilter("InvalidInputFile");
         Logger.RegisterListener(listener);
 
@@ -227,7 +227,7 @@ public void ProcessSwaggerWithXRefMapShouldSucceed()
     public void ProcessSwaggerWithTagsOverwriteShouldSucceed()
     {
         FileCollection files = new(_defaultFiles);
-        files.Add(DocumentType.Overwrite, new[] { "TestData/overwrite/rest.overwrite.tags.md" });
+        files.Add(DocumentType.Overwrite, ["TestData/overwrite/rest.overwrite.tags.md"]);
         BuildDocument(files);
 
         {
@@ -247,7 +247,7 @@ public void ProcessSwaggerWithTagsOverwriteShouldSucceed()
     public void ProcessSwaggerWithDefaultOverwriteShouldSucceed()
     {
         FileCollection files = new(_defaultFiles);
-        files.Add(DocumentType.Overwrite, new[] { "TestData/overwrite/rest.overwrite.default.md" });
+        files.Add(DocumentType.Overwrite, ["TestData/overwrite/rest.overwrite.default.md"]);
         BuildDocument(files);
 
         {
@@ -278,9 +278,9 @@ public void ProcessSwaggerWithInvalidLinksOverwriteShouldSucceedWithWarning()
         using var listener = new TestListenerScope();
 
         var files = new FileCollection(_defaultFiles);
-        files.Add(DocumentType.Article, new[] { "TestData/swagger/tag_swagger2.json" }, "TestData/");
-        files.Add(DocumentType.Overwrite, new[] { "TestData/overwrite/rest.overwrite.invalid.links.first.md" });
-        files.Add(DocumentType.Overwrite, new[] { "TestData/overwrite/rest.overwrite.invalid.links.second.md" });
+        files.Add(DocumentType.Article, ["TestData/swagger/tag_swagger2.json"], "TestData/");
+        files.Add(DocumentType.Overwrite, ["TestData/overwrite/rest.overwrite.invalid.links.first.md"]);
+        files.Add(DocumentType.Overwrite, ["TestData/overwrite/rest.overwrite.invalid.links.second.md"]);
         BuildDocument(files);
 
         Assert.Equal(7, listener.Items.Count); // Additional warning for "There is no template processing document type(s): RestApi"
@@ -322,7 +322,7 @@ public void ProcessSwaggerWithInvalidLinksOverwriteShouldSucceedWithWarning()
     public void ProcessSwaggerWithParametersOverwriteShouldSucceed()
     {
         var files = new FileCollection(_defaultFiles);
-        files.Add(DocumentType.Overwrite, new[] { "TestData/overwrite/rest.overwrite.parameters.md" });
+        files.Add(DocumentType.Overwrite, ["TestData/overwrite/rest.overwrite.parameters.md"]);
         BuildDocument(files);
         var outputRawModelPath = GetRawModelFilePath("contacts.json");
         Assert.True(File.Exists(outputRawModelPath));
@@ -364,7 +364,7 @@ public void ProcessSwaggerWithParametersOverwriteShouldSucceed()
     public void ProcessSwaggerWithNotPredefinedOverwriteShouldSucceed()
     {
         FileCollection files = new(_defaultFiles);
-        files.Add(DocumentType.Overwrite, new[] { "TestData/overwrite/rest.overwrite.not.predefined.md" });
+        files.Add(DocumentType.Overwrite, ["TestData/overwrite/rest.overwrite.not.predefined.md"]);
         BuildDocument(files);
         {
             var outputRawModelPath = GetRawModelFilePath("contacts.json");
@@ -387,7 +387,7 @@ public void ProcessSwaggerWithInvalidOverwriteShouldFail()
     public void ProcessSwaggerWithUnmergeableOverwriteShouldSucceed()
     {
         FileCollection files = new(_defaultFiles);
-        files.Add(DocumentType.Overwrite, new[] { "TestData/overwrite/rest.overwrite.unmergeable.md" });
+        files.Add(DocumentType.Overwrite, ["TestData/overwrite/rest.overwrite.unmergeable.md"]);
         BuildDocument(files);
         {
             var outputRawModelPath = GetRawModelFilePath("contacts.json");
@@ -401,7 +401,7 @@ public void ProcessSwaggerWithUnmergeableOverwriteShouldSucceed()
     public void ProcessSwaggerWithRemarksOverwriteShouldSucceed()
     {
         var files = new FileCollection(_defaultFiles);
-        files.Add(DocumentType.Overwrite, new[] { "TestData/overwrite/rest.overwrite.remarks.md" });
+        files.Add(DocumentType.Overwrite, ["TestData/overwrite/rest.overwrite.remarks.md"]);
         BuildDocument(files);
         {
             var outputRawModelPath = GetRawModelFilePath("contacts.json");
@@ -415,8 +415,8 @@ public void ProcessSwaggerWithRemarksOverwriteShouldSucceed()
     public void ProcessSwaggerWithMultiUidOverwriteShouldSucceed()
     {
         var files = new FileCollection(_defaultFiles);
-        files.Add(DocumentType.Overwrite, new[] { "TestData/overwrite/rest.overwrite.multi.uid.md" });
-        files.Add(DocumentType.Overwrite, new[] { "TestData/overwrite/rest.overwrite.unmergeable.md" });
+        files.Add(DocumentType.Overwrite, ["TestData/overwrite/rest.overwrite.multi.uid.md"]);
+        files.Add(DocumentType.Overwrite, ["TestData/overwrite/rest.overwrite.unmergeable.md"]);
         BuildDocument(files);
         {
             var outputRawModelPath = GetRawModelFilePath("contacts.json");
@@ -460,7 +460,7 @@ private void BuildDocument(FileCollection files)
             }.ToImmutableDictionary()
         };
 
-        using var builder = new DocumentBuilder(LoadAssemblies(), ImmutableArray<string>.Empty);
+        using var builder = new DocumentBuilder(LoadAssemblies(), []);
         builder.Build(parameters);
     }
 
diff --git a/test/Docfx.Build.RestApi.WithPlugins.Tests/SplitRestApiToOperationLevelTest.cs b/test/Docfx.Build.RestApi.WithPlugins.Tests/SplitRestApiToOperationLevelTest.cs
index 1e0dd40bc2e..4f9f8656300 100644
--- a/test/Docfx.Build.RestApi.WithPlugins.Tests/SplitRestApiToOperationLevelTest.cs
+++ b/test/Docfx.Build.RestApi.WithPlugins.Tests/SplitRestApiToOperationLevelTest.cs
@@ -242,7 +242,7 @@ private void BuildDocument(FileCollection files, bool enableTagLevel = false)
             TemplateManager = _templateManager
         };
 
-        using var builder = new DocumentBuilder(LoadAssemblies(enableTagLevel), ImmutableArray<string>.Empty);
+        using var builder = new DocumentBuilder(LoadAssemblies(enableTagLevel), []);
         builder.Build(parameters);
     }
 
diff --git a/test/Docfx.Build.RestApi.WithPlugins.Tests/SplitRestApiToTagLevelTest.cs b/test/Docfx.Build.RestApi.WithPlugins.Tests/SplitRestApiToTagLevelTest.cs
index dd4b1a1604e..22a06714040 100644
--- a/test/Docfx.Build.RestApi.WithPlugins.Tests/SplitRestApiToTagLevelTest.cs
+++ b/test/Docfx.Build.RestApi.WithPlugins.Tests/SplitRestApiToTagLevelTest.cs
@@ -31,13 +31,13 @@ public SplitRestApiToTagLevelTest()
         string inputFolder = GetRandomFolder();
         _outputFolder = GetRandomFolder();
         _defaultFiles = new FileCollection(Directory.GetCurrentDirectory());
-        _defaultFiles.Add(DocumentType.Article, new[] { "TestData/swagger/petstore.json" }, "TestData/");
+        _defaultFiles.Add(DocumentType.Article, ["TestData/swagger/petstore.json"], "TestData/");
         _applyTemplateSettings = new ApplyTemplateSettings(inputFolder, _outputFolder)
         {
             RawModelExportSettings = { Export = true },
             TransformDocument = true,
         };
-        _templateManager = new TemplateManager(new List<string> { "template" }, null, "TestData/");
+        _templateManager = new TemplateManager(["template"], null, "TestData/");
     }
 
     [Fact]
@@ -142,7 +142,7 @@ private void BuildDocument(FileCollection files)
             TemplateManager = _templateManager
         };
 
-        using var builder = new DocumentBuilder(LoadAssemblies(), ImmutableArray<string>.Empty);
+        using var builder = new DocumentBuilder(LoadAssemblies(), []);
         builder.Build(parameters);
     }
 
diff --git a/test/Docfx.Build.SchemaDriven.Tests/MarkdownFragmentsValidationTest.cs b/test/Docfx.Build.SchemaDriven.Tests/MarkdownFragmentsValidationTest.cs
index 0fbfee19ba1..a04406a268e 100644
--- a/test/Docfx.Build.SchemaDriven.Tests/MarkdownFragmentsValidationTest.cs
+++ b/test/Docfx.Build.SchemaDriven.Tests/MarkdownFragmentsValidationTest.cs
@@ -36,7 +36,7 @@ public void OverwriteUnEditableTest()
         _defaultFiles = new FileCollection(Directory.GetCurrentDirectory());
         _applyTemplateSettings = new ApplyTemplateSettings(_inputFolder, _outputFolder) { RawModelExportSettings = { Export = true }, TransformDocument = true, };
 
-        _templateManager = new TemplateManager(new List<string> { "template" }, null, _templateFolder);
+        _templateManager = new TemplateManager(["template"], null, _templateFolder);
 
         _rawModelFilePath = GetRawModelFilePath("FragmentsValidation.yml");
 
@@ -44,7 +44,7 @@ public void OverwriteUnEditableTest()
         var yamlFile = CreateFile("FragmentsValidation.yml", File.ReadAllText("TestData/inputs/FragmentsValidation.yml"), _inputFolder);
         var mdFile = CreateFile("FragmentsValidation.yml.md", File.ReadAllText("TestData/inputs/FragmentsValidation.yml.md"), _inputFolder);
         _files = new FileCollection(_defaultFiles);
-        _files.Add(DocumentType.Article, new[] { yamlFile }, _inputFolder);
+        _files.Add(DocumentType.Article, [yamlFile], _inputFolder);
 
         // Act
         Logger.RegisterListener(_listener);
@@ -83,7 +83,7 @@ private void BuildDocument(FileCollection files)
             TemplateManager = _templateManager,
         };
 
-        using var builder = new DocumentBuilder(LoadAssemblies(), ImmutableArray<string>.Empty);
+        using var builder = new DocumentBuilder(LoadAssemblies(), []);
         builder.Build(parameters);
     }
 
diff --git a/test/Docfx.Build.SchemaDriven.Tests/MergeMarkdownFragmentsTest.cs b/test/Docfx.Build.SchemaDriven.Tests/MergeMarkdownFragmentsTest.cs
index 3d20881d3e9..714326d5e42 100644
--- a/test/Docfx.Build.SchemaDriven.Tests/MergeMarkdownFragmentsTest.cs
+++ b/test/Docfx.Build.SchemaDriven.Tests/MergeMarkdownFragmentsTest.cs
@@ -34,14 +34,14 @@ public MergeMarkdownFragmentsTest()
         var defaultFiles = new FileCollection(Directory.GetCurrentDirectory());
         _applyTemplateSettings = new ApplyTemplateSettings(_inputFolder, _outputFolder) { RawModelExportSettings = { Export = true }, TransformDocument = true, };
 
-        _templateManager = new TemplateManager(new List<string> { "template" }, null, templateFolder);
+        _templateManager = new TemplateManager(["template"], null, templateFolder);
 
         _rawModelFilePath = GetRawModelFilePath("Suppressions.yml");
 
         var schemaFile = CreateFile("template/schemas/rest.mixed.schema.json", File.ReadAllText("TestData/schemas/rest.mixed.schema.json"), templateFolder);
         var yamlFile = CreateFile("Suppressions.yml", File.ReadAllText("TestData/inputs/Suppressions.yml"), _inputFolder);
         _files = new FileCollection(defaultFiles);
-        _files.Add(DocumentType.Article, new[] { yamlFile }, _inputFolder);
+        _files.Add(DocumentType.Article, [yamlFile], _inputFolder);
     }
 
     [Fact]
@@ -352,11 +352,12 @@ I add a summary.
         // modify fragments
         UpdateFile(
             "Suppressions.yml.md",
-            new string[] { "# `management.azure.com.advisor.suppressions`",
+            [
+                "# `management.azure.com.advisor.suppressions`",
                 "## ``summary``",
                 "I update a summary.",
-                "With [!include[invalid](invalid.md)]",
-            },
+                "With [!include[invalid](invalid.md)]"
+            ],
             _inputFolder);
 
         BuildDocument(_files);
@@ -402,7 +403,7 @@ private void BuildDocument(FileCollection files)
             TemplateManager = _templateManager,
         };
 
-        using var builder = new DocumentBuilder(LoadAssemblies(), ImmutableArray<string>.Empty);
+        using var builder = new DocumentBuilder(LoadAssemblies(), []);
         builder.Build(parameters);
     }
 
diff --git a/test/Docfx.Build.SchemaDriven.Tests/SchemaDrivenProcessorTest.cs b/test/Docfx.Build.SchemaDriven.Tests/SchemaDrivenProcessorTest.cs
index b17f774dafc..bdb5e1b1175 100644
--- a/test/Docfx.Build.SchemaDriven.Tests/SchemaDrivenProcessorTest.cs
+++ b/test/Docfx.Build.SchemaDriven.Tests/SchemaDrivenProcessorTest.cs
@@ -40,7 +40,7 @@ public SchemaDrivenProcessorTest()
             TransformDocument = true,
         };
 
-        _templateManager = new TemplateManager(new List<string> { "template" }, null, _templateFolder);
+        _templateManager = new TemplateManager(["template"], null, _templateFolder);
     }
 
     [Fact]
@@ -84,7 +84,7 @@ public void TestRef()
   - description: ""**outside**""
 ", _inputFolder);
         FileCollection files = new(_defaultFiles);
-        files.Add(DocumentType.Article, new[] { inputFile }, _inputFolder);
+        files.Add(DocumentType.Article, [inputFile], _inputFolder);
         BuildDocument(files);
 
         Assert.Single(listener.Items);
@@ -111,7 +111,7 @@ public void TestRef()
 <p>3.1.1<strong>Hello</strong></p>
 <p><strong>outside</strong></p>
 "
-                .Split(new string[] { "\r\n", "\n" }, StringSplitOptions.RemoveEmptyEntries),
+                .Split(["\r\n", "\n"], StringSplitOptions.RemoveEmptyEntries),
             File.ReadAllLines(outputFilePath).Where(s => !string.IsNullOrWhiteSpace(s)).Select(s => s.Trim()).ToArray());
     }
 
@@ -134,7 +134,7 @@ public void TestXrefResolver()
         var inputFileName = "inputs/CatLibrary.ICat.yml";
         var inputFile = CreateFile(inputFileName, File.ReadAllText("TestData/inputs/CatLibrary.ICat.yml"), _inputFolder);
         FileCollection files = new(_defaultFiles);
-        files.Add(DocumentType.Article, new[] { inputFile }, _inputFolder);
+        files.Add(DocumentType.Article, [inputFile], _inputFolder);
 
         // act
         BuildDocument(files);
@@ -161,7 +161,7 @@ public void TestXrefResolver()
         Assert.Equal(@"
 eat:<p>eat event of cat. Every cat must implement this event.
 This method is within <a class=""xref"" href=""CatLibrary.ICat.html"">ICat</a></p>
-|666|<span>net472</span><span>netstandard2_0</span>".Split(new string[] { "\r\n", "\n" }, StringSplitOptions.None),
+|666|<span>net472</span><span>netstandard2_0</span>".Split(["\r\n", "\n"], StringSplitOptions.None),
             outputFileContent);
     }
 
@@ -232,7 +232,7 @@ public void TestValidMetadataReferenceWithIncremental()
 ", _inputFolder);
 
         FileCollection files = new(_defaultFiles);
-        files.Add(DocumentType.Article, new[] { inputFile1, inputFile2, dependentMarkdown }, _inputFolder);
+        files.Add(DocumentType.Article, [inputFile1, inputFile2, dependentMarkdown], _inputFolder);
 
         BuildDocument(files);
 
@@ -258,7 +258,7 @@ public void TestValidMetadataReferenceWithIncremental()
         Assert.Equal("postbuild2", rawModel2["metadata"]["postMeta"].ToString());
 
         // change dependent markdown
-        UpdateFile("toc.md", new string[] { "# Updated" }, _inputFolder);
+        UpdateFile("toc.md", ["# Updated"], _inputFolder);
         BuildDocument(files);
 
         rawModel = JsonUtility.Deserialize<JObject>(rawModelFilePath);
@@ -333,7 +333,7 @@ public void TestInvalidObjectAgainstSchema()
 ", _inputFolder);
 
         FileCollection files = new(_defaultFiles);
-        files.Add(DocumentType.Article, new[] { inputFile }, _inputFolder);
+        files.Add(DocumentType.Article, [inputFile], _inputFolder);
         BuildDocument(files);
         var errors = listener.Items.Where(s => s.Code == "ViolateSchema").ToList();
         Assert.Single(errors);
@@ -376,7 +376,7 @@ public void TestInvalidMetadataReference()
 ", _inputFolder);
 
         FileCollection files = new(_defaultFiles);
-        files.Add(DocumentType.Article, new[] { inputFile1 }, _inputFolder);
+        files.Add(DocumentType.Article, [inputFile1], _inputFolder);
         Assert.Throws<InvalidJsonPointerException>(() => BuildDocument(files));
     }
 
@@ -394,7 +394,7 @@ private void BuildDocument(FileCollection files, DocumentBuildParameters dbp = n
             TemplateManager = _templateManager,
         };
 
-        using var builder = new DocumentBuilder(LoadAssemblies(), ImmutableArray<string>.Empty);
+        using var builder = new DocumentBuilder(LoadAssemblies(), []);
         builder.Build(parameters);
     }
 
diff --git a/test/Docfx.Build.SchemaDriven.Tests/SchemaFragmentsIteratorTest.cs b/test/Docfx.Build.SchemaDriven.Tests/SchemaFragmentsIteratorTest.cs
index e8f76657d87..079dbc809f5 100644
--- a/test/Docfx.Build.SchemaDriven.Tests/SchemaFragmentsIteratorTest.cs
+++ b/test/Docfx.Build.SchemaDriven.Tests/SchemaFragmentsIteratorTest.cs
@@ -36,11 +36,11 @@ public void TestSchemaFragmentsIterator()
 
     private class UidPropertyCounter : ISchemaFragmentsHandler
     {
-        public List<string> ExistingMarkdownProperties { get; private set; } = new();
+        public List<string> ExistingMarkdownProperties { get; private set; } = [];
 
-        public List<string> MissingMarkdownProperties { get; private set; } = new();
+        public List<string> MissingMarkdownProperties { get; private set; } = [];
 
-        public List<string> ExistingUids { get; private set; } = new();
+        public List<string> ExistingUids { get; private set; } = [];
 
         public void HandleUid(string uidKey, YamlMappingNode node, Dictionary<string, MarkdownFragment> fragments, BaseSchema schema, string oPathPrefix, string uid)
         {
diff --git a/test/Docfx.Build.SchemaDriven.Tests/SchemaMergerTest.cs b/test/Docfx.Build.SchemaDriven.Tests/SchemaMergerTest.cs
index a33b88b301d..ee3515821c9 100644
--- a/test/Docfx.Build.SchemaDriven.Tests/SchemaMergerTest.cs
+++ b/test/Docfx.Build.SchemaDriven.Tests/SchemaMergerTest.cs
@@ -36,7 +36,7 @@ public SchemaMergerTest()
             TransformDocument = true,
         };
 
-        _templateManager = new TemplateManager(new List<string> { "template" }, null, _templateFolder);
+        _templateManager = new TemplateManager(["template"], null, _templateFolder);
     }
 
     [Fact]
@@ -216,8 +216,8 @@ public void TestSchemaOverwriteWithGeneralMergeTypes()
 Overwrite with content
 ", _inputFolder);
         FileCollection files = new(_defaultFiles);
-        files.Add(DocumentType.Article, new[] { inputFile }, _inputFolder);
-        files.Add(DocumentType.Overwrite, new[] { overwriteFile }, _inputFolder);
+        files.Add(DocumentType.Article, [inputFile], _inputFolder);
+        files.Add(DocumentType.Overwrite, [overwriteFile], _inputFolder);
         BuildDocument(files);
 
         // One plugin warning for yml and one plugin warning for overwrite file
@@ -343,8 +343,8 @@ public void TestSchemaOverwriteWithGeneralSchemaOptions()
 Nice
 ", _inputFolder);
         FileCollection files = new(_defaultFiles);
-        files.Add(DocumentType.Article, new[] { inputFile }, _inputFolder);
-        files.Add(DocumentType.Overwrite, new[] { overwriteFile }, _inputFolder);
+        files.Add(DocumentType.Article, [inputFile], _inputFolder);
+        files.Add(DocumentType.Overwrite, [overwriteFile], _inputFolder);
         BuildDocument(files);
 
         // One plugin warning for yml and one plugin warning for overwrite file
@@ -378,7 +378,7 @@ private void BuildDocument(FileCollection files)
             TemplateManager = _templateManager,
         };
 
-        using var builder = new DocumentBuilder(LoadAssemblies(), ImmutableArray<string>.Empty);
+        using var builder = new DocumentBuilder(LoadAssemblies(), []);
         builder.Build(parameters);
     }
 
diff --git a/test/Docfx.Build.Tests/ConceptualDocumentProcessorTest.cs b/test/Docfx.Build.Tests/ConceptualDocumentProcessorTest.cs
index 51051ed04ca..9348bfbfb01 100644
--- a/test/Docfx.Build.Tests/ConceptualDocumentProcessorTest.cs
+++ b/test/Docfx.Build.Tests/ConceptualDocumentProcessorTest.cs
@@ -417,7 +417,7 @@ private void BuildDocument(FileCollection files, Dictionary<string, object> meta
             TemplateManager = _templateManager
         };
 
-        using var builder = new DocumentBuilder(Array.Empty<Assembly>(), ImmutableArray<string>.Empty);
+        using var builder = new DocumentBuilder([], []);
         builder.Build(parameters);
     }
 
diff --git a/test/Docfx.Build.Tests/DocumentBuilderTest.cs b/test/Docfx.Build.Tests/DocumentBuilderTest.cs
index 0b23fdb7ced..67b4ae138f4 100644
--- a/test/Docfx.Build.Tests/DocumentBuilderTest.cs
+++ b/test/Docfx.Build.Tests/DocumentBuilderTest.cs
@@ -728,7 +728,7 @@ private void BuildDocument(
         string templateFolder = null,
         string versionDir = null)
     {
-        using var builder = new DocumentBuilder(LoadAssemblies(), ImmutableArray<string>.Empty);
+        using var builder = new DocumentBuilder(LoadAssemblies(), []);
         if (applyTemplateSettings == null)
         {
             applyTemplateSettings = new ApplyTemplateSettings(_inputFolder, _outputFolder);
diff --git a/test/Docfx.Build.Tests/TocDocumentProcessorTest.cs b/test/Docfx.Build.Tests/TocDocumentProcessorTest.cs
index c654e1ef350..727a6126e5f 100644
--- a/test/Docfx.Build.Tests/TocDocumentProcessorTest.cs
+++ b/test/Docfx.Build.Tests/TocDocumentProcessorTest.cs
@@ -927,7 +927,7 @@ private void BuildDocument(FileCollection files)
             }.ToImmutableDictionary(),
         };
 
-        using var builder = new DocumentBuilder(Array.Empty<Assembly>(), ImmutableArray<string>.Empty);
+        using var builder = new DocumentBuilder([], []);
         builder.Build(parameters);
     }
 
diff --git a/test/Docfx.Build.UniversalReference.Tests/UniversalReferenceDocumentProcessorTest.cs b/test/Docfx.Build.UniversalReference.Tests/UniversalReferenceDocumentProcessorTest.cs
index 2ec94eb53f6..04240ae3d34 100644
--- a/test/Docfx.Build.UniversalReference.Tests/UniversalReferenceDocumentProcessorTest.cs
+++ b/test/Docfx.Build.UniversalReference.Tests/UniversalReferenceDocumentProcessorTest.cs
@@ -193,7 +193,7 @@ private void BuildDocument(FileCollection files)
             TemplateManager = _templateManager
         };
 
-        using var builder = new DocumentBuilder(LoadAssemblies(), ImmutableArray<string>.Empty);
+        using var builder = new DocumentBuilder(LoadAssemblies(), []);
         builder.Build(parameters);
     }
 
diff --git a/test/Docfx.Dotnet.Tests/GenerateMetadataFromCSUnitTest.cs b/test/Docfx.Dotnet.Tests/GenerateMetadataFromCSUnitTest.cs
index 5ea684af187..f36db495322 100644
--- a/test/Docfx.Dotnet.Tests/GenerateMetadataFromCSUnitTest.cs
+++ b/test/Docfx.Dotnet.Tests/GenerateMetadataFromCSUnitTest.cs
@@ -475,16 +475,16 @@ public interface IFooBar : IFoo, IBar { }
             Assert.Equal("Test1", item.Parent);
 
             Assert.Equal(
-                new[] { "Test1.Bar`1", null, "System.String", null },
+                ["Test1.Bar`1", null, "System.String", null],
                 item.NameParts[SyntaxLanguage.CSharp].Select(p => p.Name));
             Assert.Equal(
-                new[] { "Bar", "<", "string", ">" },
+                ["Bar", "<", "string", ">"],
                 item.NameParts[SyntaxLanguage.CSharp].Select(p => p.DisplayName));
             Assert.Equal(
-                new[] { "Bar", "<", "string", ">" },
+                ["Bar", "<", "string", ">"],
                 item.NameWithTypeParts[SyntaxLanguage.CSharp].Select(p => p.DisplayName));
             Assert.Equal(
-                new[] { "Test1", ".", "Bar", "<", "string", ">" },
+                ["Test1", ".", "Bar", "<", "string", ">"],
                 item.QualifiedNameParts[SyntaxLanguage.CSharp].Select(p => p.DisplayName));
         }
         {
@@ -496,16 +496,16 @@ public interface IFooBar : IFoo, IBar { }
             Assert.Equal(6, item.NameParts[SyntaxLanguage.CSharp].Count);
 
             Assert.Equal(
-                new[] { "Test1.Foo`1", null, null, null, null, null },
+                ["Test1.Foo`1", null, null, null, null, null],
                 item.NameParts[SyntaxLanguage.CSharp].Select(p => p.Name));
             Assert.Equal(
-                new[] { "Foo", "<", "T", "[", "]", ">" },
+                ["Foo", "<", "T", "[", "]", ">"],
                 item.NameParts[SyntaxLanguage.CSharp].Select(p => p.DisplayName));
             Assert.Equal(
-                new[] { "Foo", "<", "T", "[", "]", ">" },
+                ["Foo", "<", "T", "[", "]", ">"],
                 item.NameWithTypeParts[SyntaxLanguage.CSharp].Select(p => p.DisplayName));
             Assert.Equal(
-                new[] { "Test1", ".", "Foo", "<", "T", "[", "]", ">" },
+                ["Test1", ".", "Foo", "<", "T", "[", "]", ">"],
                 item.QualifiedNameParts[SyntaxLanguage.CSharp].Select(p => p.DisplayName));
         }
         {
@@ -515,16 +515,16 @@ public interface IFooBar : IFoo, IBar { }
             Assert.Equal("Test1", item.Parent);
 
             Assert.Equal(
-                new[] { "Test1.Foo`1", null, "System.String", null, null, null },
+                ["Test1.Foo`1", null, "System.String", null, null, null],
                 item.NameParts[SyntaxLanguage.CSharp].Select(p => p.Name));
             Assert.Equal(
-                new[] { "Foo", "<", "string", "[", "]", ">" },
+                ["Foo", "<", "string", "[", "]", ">"],
                 item.NameParts[SyntaxLanguage.CSharp].Select(p => p.DisplayName));
             Assert.Equal(
-                new[] { "Foo", "<", "string", "[", "]", ">" },
+                ["Foo", "<", "string", "[", "]", ">"],
                 item.NameWithTypeParts[SyntaxLanguage.CSharp].Select(p => p.DisplayName));
             Assert.Equal(
-                new[] { "Test1", ".", "Foo", "<", "string", "[", "]", ">" },
+                ["Test1", ".", "Foo", "<", "string", "[", "]", ">"],
                 item.QualifiedNameParts[SyntaxLanguage.CSharp].Select(p => p.DisplayName));
         }
     }
@@ -3612,45 +3612,40 @@ public class Bar
         var output = Verify(code);
         var type = output.Items[0].Items[0];
 
-        Assert.Equal(new[]
-        {
+        Assert.Equal([
             "Test.Bar.op_Implicit(System.UInt32)~Test.Bar",
             "Test.Bar.op_Implicit(System.String)~Test.Bar",
             "Test.Bar.op_CheckedExplicit(Test.Bar)~System.UInt32",
-            "Test.Bar.op_CheckedExplicit(Test.Bar)~System.String[]",
-        }, type.Items.Select(item => item.Name));
+            "Test.Bar.op_CheckedExplicit(Test.Bar)~System.String[]"
+        ], type.Items.Select(item => item.Name));
 
-        Assert.Equal(new[]
-        {
+        Assert.Equal([
             "implicit operator Bar(uint)",
             "implicit operator Bar(string)",
             "explicit operator checked uint(Bar)",
-            "explicit operator checked string[](Bar)",
-        }, type.Items.Select(item => item.DisplayNames[SyntaxLanguage.CSharp]));
+            "explicit operator checked string[](Bar)"
+        ], type.Items.Select(item => item.DisplayNames[SyntaxLanguage.CSharp]));
 
-        Assert.Equal(new[]
-        {
+        Assert.Equal([
             "Bar.implicit operator Bar(uint)",
             "Bar.implicit operator Bar(string)",
             "Bar.explicit operator checked uint(Bar)",
-            "Bar.explicit operator checked string[](Bar)",
-        }, type.Items.Select(item => item.DisplayNamesWithType[SyntaxLanguage.CSharp]));
+            "Bar.explicit operator checked string[](Bar)"
+        ], type.Items.Select(item => item.DisplayNamesWithType[SyntaxLanguage.CSharp]));
 
-        Assert.Equal(new[]
-        {
+        Assert.Equal([
             "Test.Bar.implicit operator Test.Bar(uint)",
             "Test.Bar.implicit operator Test.Bar(string)",
             "Test.Bar.explicit operator checked uint(Test.Bar)",
-            "Test.Bar.explicit operator checked string[](Test.Bar)",
-        }, type.Items.Select(item => item.DisplayQualifiedNames[SyntaxLanguage.CSharp]));
+            "Test.Bar.explicit operator checked string[](Test.Bar)"
+        ], type.Items.Select(item => item.DisplayQualifiedNames[SyntaxLanguage.CSharp]));
 
-        Assert.Equal(new[]
-        {
+        Assert.Equal([
             "Test.Bar.op_Implicit*",
             "Test.Bar.op_Implicit*",
             "Test.Bar.op_CheckedExplicit*",
-            "Test.Bar.op_CheckedExplicit*",
-        }, type.Items.Select(item => item.Overload));
+            "Test.Bar.op_CheckedExplicit*"
+        ], type.Items.Select(item => item.Overload));
 
         Assert.Equal("implicit operator", string.Concat(output.References["Test.Bar.op_Implicit*"].NameParts[SyntaxLanguage.CSharp].Select(p => p.DisplayName)));
         Assert.Equal("explicit operator checked", string.Concat(output.References["Test.Bar.op_CheckedExplicit*"].NameParts[SyntaxLanguage.CSharp].Select(p => p.DisplayName)));
@@ -3678,13 +3673,12 @@ internal interface IFoo { }
         var output = Verify(code, new() { IncludePrivateMembers = true });
         var foo = output.Items[0].Items[0];
         Assert.Equal("internal class Foo : IFoo", foo.Syntax.Content[SyntaxLanguage.CSharp]);
-        Assert.Equal(new[]
-        {
+        Assert.Equal([
             "internal void M1()",
             "protected internal void M2()",
             "private protected void M3()",
-            "private void M4()",
-        }, foo.Items.Select(item => item.Syntax.Content[SyntaxLanguage.CSharp]));
+            "private void M4()"
+        ], foo.Items.Select(item => item.Syntax.Content[SyntaxLanguage.CSharp]));
     }
 
     [Fact]
diff --git a/test/Docfx.Glob.Tests/GlobFileTest.cs b/test/Docfx.Glob.Tests/GlobFileTest.cs
index aa42185b374..da22b713f17 100644
--- a/test/Docfx.Glob.Tests/GlobFileTest.cs
+++ b/test/Docfx.Glob.Tests/GlobFileTest.cs
@@ -51,33 +51,33 @@ public void TestGlobGetFilesShouldAbleToGetFiles()
         CreateFilesOrFolders(_workingDirectory, files);
         var result = FileGlob.GetFiles(
             _workingDirectory,
-            new string[] { "**.md" },
+            ["**.md"],
             null).ToArray();
         Assert.Equal(3, result.Length);
         result = FileGlob.GetFiles(
             _workingDirectory,
             null,
-            new string[] { "**.md" }).ToArray();
+            ["**.md"]).ToArray();
         Assert.Empty(result);
         result = FileGlob.GetFiles(
             _workingDirectory,
-            new string[] { "**" },
-            new string[] { "**.md" }).ToArray();
+            ["**"],
+            ["**.md"]).ToArray();
         Assert.Equal(6, result.Length);
         result = FileGlob.GetFiles(
              _workingDirectory,
-             new string[] { "**.md" },
-             new string[] { "**{J,L}/**" }).ToArray();
+             ["**.md"],
+             ["**{J,L}/**"]).ToArray();
         Assert.Single(result);
         result = FileGlob.GetFiles(
              _workingDirectory,
-             new string[] { "**.md", "**.csproj" },
-             new string[] { "**J/**", "**/M/**" }).ToArray();
+             ["**.md", "**.csproj"],
+             ["**J/**", "**/M/**"]).ToArray();
         Assert.Single(result);
         result = FileGlob.GetFiles(
              _workingDirectory + "/Root",
-             new string[] { "[EJ]/*.{md,cs,csproj}" },
-             new string[] { "**.cs" }).ToArray();
+             ["[EJ]/*.{md,cs,csproj}"],
+             ["**.cs"]).ToArray();
         Assert.Equal(2, result.Length);
     }