public void GetCompletionItems_ProvidesCompletionsForDirectivesWithoutDescription()
        {
            // Arrange
            var customDirective      = DirectiveDescriptor.CreateSingleLineDirective("custom");
            var codeDocumentProvider = CreateCodeDocumentProvider("@", new[] { customDirective });
            var completionProvider   = new RazorDirectiveCompletionProvider(codeDocumentProvider);
            var document             = CreateDocument();

            codeDocumentProvider.Value.TryGetFromDocument(document, out var codeDocument);
            var syntaxTree = codeDocument.GetSyntaxTree();

            // Act
            var completionItems = completionProvider.GetCompletionItems(syntaxTree);

            // Assert
            var customDirectiveCompletion = Assert.Single(completionItems, item => item.DisplayText == customDirective.Directive);

            AssertRazorCompletionItemDefaults(customDirectiveCompletion);
            Assert.DoesNotContain(customDirectiveCompletion.Properties, property => property.Key == RazorDirectiveCompletionProvider.DescriptionKey);
        }
        public void GetCompletionItems_ProvidesCompletionsForDefaultDirectives()
        {
            // Arrange
            var codeDocumentProvider = CreateCodeDocumentProvider("@", Enumerable.Empty <DirectiveDescriptor>());
            var completionProvider   = new RazorDirectiveCompletionProvider(codeDocumentProvider);
            var document             = CreateDocument();

            codeDocumentProvider.Value.TryGetFromDocument(document, out var codeDocument);
            var syntaxTree = codeDocument.GetSyntaxTree();

            // Act
            var completionItems = completionProvider.GetCompletionItems(syntaxTree);

            // Assert
            Assert.Collection(
                completionItems,
                item => AssertRazorCompletionItem(DefaultDirectives[0].Description, item),
                item => AssertRazorCompletionItem(DefaultDirectives[1].Description, item),
                item => AssertRazorCompletionItem(DefaultDirectives[2].Description, item));
        }