// 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;
using System.Collections.Generic;
using Microsoft.AspNetCore.Razor.Language.Legacy;
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_Persists_FilePath()
{
// Arrange
var filePath = "test.cshtml";
var source = TestRazorSourceDocument.Create("@if (true) { @if(false) { @something.
} }", fileName: filePath);
// Act
var syntaxTree = RazorSyntaxTree.Parse(source);
// Assert
Assert.Empty(syntaxTree.Diagnostics);
Assert.NotNull(syntaxTree);
var spans = new List();
GetChildren(syntaxTree.Root);
Assert.All(spans, node => Assert.Equal(filePath, node.Start.FilePath));
void GetChildren(SyntaxTreeNode node)
{
if (node is Block block)
{
foreach (var child in block.Children)
{
GetChildren(child);
}
}
else
{
spans.Add(node);
}
}
}
[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
Assert.NotNull(syntaxTree);
Assert.Equal(6, syntaxTree.Root.Children.Count);
var block = Assert.IsType(syntaxTree.Root.Children[4]);
Assert.Equal(BlockKindInternal.Directive, block.Type);
Assert.Empty(syntaxTree.Diagnostics);
}
}
}