// Copyright (c) .NET Foundation. All rights reserved.
// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
using System.Linq;
using Microsoft.AspNetCore.Razor.Language.Syntax;
using Xunit;
namespace Microsoft.AspNetCore.Razor.Language.Test
{
public class RazorSyntaxTreeTest
{
[Fact]
public void Parse_CanParseEmptyDocument()
{
// Arrange
var source = TestRazorSourceDocument.Create(string.Empty);
// Act
var syntaxTree = RazorSyntaxTree.Parse(source);
// Assert
Assert.NotNull(syntaxTree);
Assert.Empty(syntaxTree.Diagnostics);
}
[Fact]
public void Parse_NodesReturnCorrectFilePath()
{
// Arrange
var filePath = "test.cshtml";
var source = TestRazorSourceDocument.Create("@if (true) { @if(false) { @something.
} }", filePath: filePath);
// Act
var syntaxTree = RazorSyntaxTree.Parse(source);
// Assert
Assert.Empty(syntaxTree.Diagnostics);
Assert.NotNull(syntaxTree);
var children = syntaxTree.Root.DescendantNodes();
Assert.All(children, node => Assert.Equal(filePath, node.GetSourceLocation(source).FilePath));
}
[Fact]
public void Parse_UseDirectiveTokenizer_ParsesUntilFirstDirective()
{
// Arrange
var source = TestRazorSourceDocument.Create("\r\n \r\n @*SomeComment*@ \r\n @tagHelperPrefix \"SomePrefix\"\r\n\r\n@if (true) {\r\n @if(false) { @something.
} \r\n}");
var options = RazorParserOptions.Create(builder => builder.ParseLeadingDirectives = true);
// Act
var syntaxTree = RazorSyntaxTree.Parse(source, options);
// Assert
var root = syntaxTree.Root;
Assert.NotNull(syntaxTree);
Assert.Equal(61, root.EndPosition);
Assert.Single(root.DescendantNodes().Where(n => n is RazorDirectiveBodySyntax body && body.Keyword.GetContent() == "tagHelperPrefix"));
Assert.Empty(root.DescendantNodes().Where(n => n is MarkupTagBlockSyntax));
Assert.Empty(syntaxTree.Diagnostics);
}
}
}