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// Copyright (c) Microsoft Corporation. All rights reserved. See License.txt in the project root for license information.
using System.Collections.Generic;
using System.Linq;
using System.Web.Razor;
using System.Web.Razor.Generator;
using System.Web.Razor.Parser;
using System.Web.Razor.Parser.SyntaxTree;
using System.Web.Razor.Test.Framework;
using System.Web.Razor.Text;
using Xunit;
namespace System.Web.Mvc.Razor.Test
{
public class MvcCSharpRazorCodeParserTest
{
[Fact]
public void Constructor_AddsModelKeyword()
{
var parser = new TestMvcCSharpRazorCodeParser();
Assert.True(parser.HasDirective("model"));
}
[Fact]
public void ParseModelKeyword_HandlesSingleInstance()
{
// Arrange + Act
var document = "@model Foo";
var spans = ParseDocument(document);
// Assert
var factory = SpanFactory.CreateCsHtml();
var expectedSpans = new Span[]
{
factory.EmptyHtml(),
factory.CodeTransition(SyntaxConstants.TransitionString)
.Accepts(AcceptedCharacters.None),
factory.MetaCode("model ")
.Accepts(AcceptedCharacters.None),
factory.Code(" Foo")
.As(new SetModelTypeCodeGenerator("Foo", "{0}<{1}>"))
};
Assert.Equal(expectedSpans, spans.ToArray());
}
[Fact]
public void ParseModelKeyword_HandlesNullableTypes()
{
// Arrange + Act
var document = "@model Foo?\r\nBar";
var spans = ParseDocument(document);
// Assert
var factory = SpanFactory.CreateCsHtml();
var expectedSpans = new Span[]
{
factory.EmptyHtml(),
factory.CodeTransition(SyntaxConstants.TransitionString)
.Accepts(AcceptedCharacters.None),
factory.MetaCode("model ")
.Accepts(AcceptedCharacters.None),
factory.Code("Foo?\r\n")
.As(new SetModelTypeCodeGenerator("Foo?", "{0}<{1}>")),
factory.Markup("Bar")
.With(new MarkupCodeGenerator())
};
Assert.Equal(expectedSpans, spans.ToArray());
}
[Fact]
public void ParseModelKeyword_HandlesArrays()
{
// Arrange + Act
var document = "@model Foo[[]][]\r\nBar";
var spans = ParseDocument(document);
// Assert
var factory = SpanFactory.CreateCsHtml();
var expectedSpans = new Span[]
{
factory.EmptyHtml(),
factory.CodeTransition(SyntaxConstants.TransitionString)
.Accepts(AcceptedCharacters.None),
factory.MetaCode("model ")
.Accepts(AcceptedCharacters.None),
factory.Code("Foo[[]][]\r\n")
.As(new SetModelTypeCodeGenerator("Foo[[]][]", "{0}<{1}>")),
factory.Markup("Bar")
.With(new MarkupCodeGenerator())
};
Assert.Equal(expectedSpans, spans.ToArray());
}
[Fact]
public void ParseModelKeyword_HandlesVSTemplateSyntax()
{
// Arrange + Act
var document = "@model $rootnamespace$.MyModel";
var spans = ParseDocument(document);
// Assert
var factory = SpanFactory.CreateCsHtml();
var expectedSpans = new Span[]
{
factory.EmptyHtml(),
factory.CodeTransition(SyntaxConstants.TransitionString)
.Accepts(AcceptedCharacters.None),
factory.MetaCode("model ")
.Accepts(AcceptedCharacters.None),
factory.Code("$rootnamespace$.MyModel")
.As(new SetModelTypeCodeGenerator("$rootnamespace$.MyModel", "{0}<{1}>"))
};
Assert.Equal(expectedSpans, spans.ToArray());
}
[Fact]
public void ParseModelKeyword_ErrorOnMissingModelType()
{
// Arrange + Act
List<RazorError> errors = new List<RazorError>();
var document = "@model ";
var spans = ParseDocument(document, errors);
// Assert
var factory = SpanFactory.CreateCsHtml();
var expectedSpans = new Span[]
{
factory.EmptyHtml(),
factory.CodeTransition(SyntaxConstants.TransitionString)
.Accepts(AcceptedCharacters.None),
factory.MetaCode("model ")
.Accepts(AcceptedCharacters.None),
factory.Code(" ")
.As(new SetModelTypeCodeGenerator(String.Empty, "{0}<{1}>")),
};
var expectedErrors = new[]
{
new RazorError("The 'model' keyword must be followed by a type name on the same line.", new SourceLocation(9, 0, 9), 1)
};
Assert.Equal(expectedSpans, spans.ToArray());
Assert.Equal(expectedErrors, errors.ToArray());
}
[Fact]
public void ParseModelKeyword_ErrorOnMultipleModelStatements()
{
// Arrange + Act
List<RazorError> errors = new List<RazorError>();
var document =
@"@model Foo
@model Bar";
var spans = ParseDocument(document, errors);
// Assert
var factory = SpanFactory.CreateCsHtml();
var expectedSpans = new Span[]
{
factory.EmptyHtml(),
factory.CodeTransition(SyntaxConstants.TransitionString)
.Accepts(AcceptedCharacters.None),
factory.MetaCode("model ")
.Accepts(AcceptedCharacters.None),
factory.Code("Foo\r\n")
.As(new SetModelTypeCodeGenerator("Foo", "{0}<{1}>")),
factory.CodeTransition(SyntaxConstants.TransitionString)
.Accepts(AcceptedCharacters.None),
factory.MetaCode("model ")
.Accepts(AcceptedCharacters.None),
factory.Code("Bar")
.As(new SetModelTypeCodeGenerator("Bar", "{0}<{1}>"))
};
var expectedErrors = new[]
{
new RazorError("Only one 'model' statement is allowed in a file.", new SourceLocation(18, 1, 6), 1)
};
expectedSpans.Zip(spans, (exp, span) => new { expected = exp, span = span }).ToList().ForEach(i => Assert.Equal(i.expected, i.span));
Assert.Equal(expectedSpans, spans.ToArray());
Assert.Equal(expectedErrors, errors.ToArray());
}
[Fact]
public void ParseModelKeyword_ErrorOnModelFollowedByInherits()
{
// Arrange + Act
List<RazorError> errors = new List<RazorError>();
var document =
@"@model Foo
@inherits Bar";
var spans = ParseDocument(document, errors);
// Assert
var factory = SpanFactory.CreateCsHtml();
var expectedSpans = new Span[]
{
factory.EmptyHtml(),
factory.CodeTransition(SyntaxConstants.TransitionString)
.Accepts(AcceptedCharacters.None),
factory.MetaCode("model ")
.Accepts(AcceptedCharacters.None),
factory.Code("Foo\r\n")
.As(new SetModelTypeCodeGenerator("Foo", "{0}<{1}>")),
factory.CodeTransition(SyntaxConstants.TransitionString)
.Accepts(AcceptedCharacters.None),
factory.MetaCode("inherits ")
.Accepts(AcceptedCharacters.None),
factory.Code("Bar")
.As(new SetBaseTypeCodeGenerator("Bar"))
};
var expectedErrors = new[]
{
new RazorError("The 'inherits' keyword is not allowed when a 'model' keyword is used.", new SourceLocation(21, 1, 9), 1)
};
expectedSpans.Zip(spans, (exp, span) => new { expected = exp, span = span }).ToList().ForEach(i => Assert.Equal(i.expected, i.span));
Assert.Equal(expectedSpans, spans.ToArray());
Assert.Equal(expectedErrors, errors.ToArray());
}
[Fact]
public void ParseModelKeyword_ErrorOnInheritsFollowedByModel()
{
// Arrange + Act
List<RazorError> errors = new List<RazorError>();
var document =
@"@inherits Bar
@model Foo";
var spans = ParseDocument(document, errors);
// Assert
var factory = SpanFactory.CreateCsHtml();
var expectedSpans = new Span[]
{
factory.EmptyHtml(),
factory.CodeTransition(SyntaxConstants.TransitionString)
.Accepts(AcceptedCharacters.None),
factory.MetaCode("inherits ")
.Accepts(AcceptedCharacters.None),
factory.Code("Bar\r\n")
.As(new SetBaseTypeCodeGenerator("Bar")),
factory.CodeTransition(SyntaxConstants.TransitionString)
.Accepts(AcceptedCharacters.None),
factory.MetaCode("model ")
.Accepts(AcceptedCharacters.None),
factory.Code("Foo")
.As(new SetModelTypeCodeGenerator("Foo", "{0}<{1}>"))
};
var expectedErrors = new[]
{
new RazorError("The 'inherits' keyword is not allowed when a 'model' keyword is used.", new SourceLocation(9, 0, 9), 1)
};
expectedSpans.Zip(spans, (exp, span) => new { expected = exp, span = span }).ToList().ForEach(i => Assert.Equal(i.expected, i.span));
Assert.Equal(expectedSpans, spans.ToArray());
Assert.Equal(expectedErrors, errors.ToArray());
}
private static List<Span> ParseDocument(string documentContents, IList<RazorError> errors = null)
{
errors = errors ?? new List<RazorError>();
var markupParser = new HtmlMarkupParser();
var codeParser = new TestMvcCSharpRazorCodeParser();
var context = new ParserContext(new SeekableTextReader(documentContents), codeParser, markupParser, markupParser);
codeParser.Context = context;
markupParser.Context = context;
markupParser.ParseDocument();
ParserResults results = context.CompleteParse();
foreach (RazorError error in results.ParserErrors)
{
errors.Add(error);
}
return results.Document.Flatten().ToList();
}
private sealed class TestMvcCSharpRazorCodeParser : MvcCSharpRazorCodeParser
{
public bool HasDirective(string directive)
{
Action handler;
return TryGetDirectiveHandler(directive, out handler);
}
}
}
}
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