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// Copyright (c) Microsoft Corporation. All rights reserved. See License.txt in the project root for license information.
using System.IO;
using System.Threading;
using System.Web.Razor.Generator;
using System.Web.Razor.Parser;
using System.Web.Razor.Text;
using System.Web.WebPages.TestUtils;
using Moq;
using Xunit;
using Assert = Microsoft.TestCommon.AssertEx;
namespace System.Web.Razor.Test
{
public class RazorTemplateEngineTest
{
[Fact]
public void ConstructorRequiresNonNullHost()
{
Assert.ThrowsArgumentNull(() => new RazorTemplateEngine(null), "host");
}
[Fact]
public void ConstructorInitializesHost()
{
// Arrange
RazorEngineHost host = new RazorEngineHost(new CSharpRazorCodeLanguage());
// Act
RazorTemplateEngine engine = new RazorTemplateEngine(host);
// Assert
Assert.Same(host, engine.Host);
}
[Fact]
public void CreateParserMethodIsConstructedFromHost()
{
// Arrange
RazorEngineHost host = CreateHost();
RazorTemplateEngine engine = new RazorTemplateEngine(host);
// Act
RazorParser parser = engine.CreateParser();
// Assert
Assert.IsType<CSharpCodeParser>(parser.CodeParser);
Assert.IsType<HtmlMarkupParser>(parser.MarkupParser);
}
[Fact]
public void CreateParserMethodSetsParserContextToDesignTimeModeIfHostSetToDesignTimeMode()
{
// Arrange
RazorEngineHost host = CreateHost();
RazorTemplateEngine engine = new RazorTemplateEngine(host);
host.DesignTimeMode = true;
// Act
RazorParser parser = engine.CreateParser();
// Assert
Assert.True(parser.DesignTimeMode);
}
[Fact]
public void CreateParserMethodPassesParsersThroughDecoratorMethodsOnHost()
{
// Arrange
ParserBase expectedCode = new Mock<ParserBase>().Object;
ParserBase expectedMarkup = new Mock<ParserBase>().Object;
var mockHost = new Mock<RazorEngineHost>(new CSharpRazorCodeLanguage()) { CallBase = true };
mockHost.Setup(h => h.DecorateCodeParser(It.IsAny<CSharpCodeParser>()))
.Returns(expectedCode);
mockHost.Setup(h => h.DecorateMarkupParser(It.IsAny<HtmlMarkupParser>()))
.Returns(expectedMarkup);
RazorTemplateEngine engine = new RazorTemplateEngine(mockHost.Object);
// Act
RazorParser actual = engine.CreateParser();
// Assert
Assert.Equal(expectedCode, actual.CodeParser);
Assert.Equal(expectedMarkup, actual.MarkupParser);
}
[Fact]
public void CreateCodeGeneratorMethodPassesCodeGeneratorThroughDecorateMethodOnHost()
{
// Arrange
var mockHost = new Mock<RazorEngineHost>(new CSharpRazorCodeLanguage()) { CallBase = true };
RazorCodeGenerator expected = new Mock<RazorCodeGenerator>("Foo", "Bar", "Baz", mockHost.Object).Object;
mockHost.Setup(h => h.DecorateCodeGenerator(It.IsAny<CSharpRazorCodeGenerator>()))
.Returns(expected);
RazorTemplateEngine engine = new RazorTemplateEngine(mockHost.Object);
// Act
RazorCodeGenerator actual = engine.CreateCodeGenerator("Foo", "Bar", "Baz");
// Assert
Assert.Equal(expected, actual);
}
[Fact]
public void ParseTemplateCopiesTextReaderContentToSeekableTextReaderAndPassesToParseTemplateCore()
{
// Arrange
Mock<RazorTemplateEngine> mockEngine = new Mock<RazorTemplateEngine>(CreateHost());
TextReader reader = new StringReader("foo");
CancellationTokenSource source = new CancellationTokenSource();
// Act
mockEngine.Object.ParseTemplate(reader, cancelToken: source.Token);
// Assert
mockEngine.Verify(e => e.ParseTemplateCore(It.Is<SeekableTextReader>(l => l.ReadToEnd() == "foo"),
source.Token));
}
[Fact]
public void GenerateCodeCopiesTextReaderContentToSeekableTextReaderAndPassesToGenerateCodeCore()
{
// Arrange
Mock<RazorTemplateEngine> mockEngine = new Mock<RazorTemplateEngine>(CreateHost());
TextReader reader = new StringReader("foo");
CancellationTokenSource source = new CancellationTokenSource();
string className = "Foo";
string ns = "Bar";
string src = "Baz";
// Act
mockEngine.Object.GenerateCode(reader, className: className, rootNamespace: ns, sourceFileName: src, cancelToken: source.Token);
// Assert
mockEngine.Verify(e => e.GenerateCodeCore(It.Is<SeekableTextReader>(l => l.ReadToEnd() == "foo"),
className, ns, src, source.Token));
}
[Fact]
public void ParseTemplateOutputsResultsOfParsingProvidedTemplateSource()
{
// Arrange
RazorTemplateEngine engine = new RazorTemplateEngine(CreateHost());
// Act
ParserResults results = engine.ParseTemplate(new StringTextBuffer("foo @bar("));
// Assert
Assert.False(results.Success);
Assert.Single(results.ParserErrors);
Assert.NotNull(results.Document);
}
[Fact]
public void GenerateOutputsResultsOfParsingAndGeneration()
{
// Arrange
RazorTemplateEngine engine = new RazorTemplateEngine(CreateHost());
// Act
GeneratorResults results = engine.GenerateCode(new StringTextBuffer("foo @bar("));
// Assert
Assert.False(results.Success);
Assert.Single(results.ParserErrors);
Assert.NotNull(results.Document);
Assert.NotNull(results.GeneratedCode);
Assert.Null(results.DesignTimeLineMappings);
}
[Fact]
public void GenerateOutputsDesignTimeMappingsIfDesignTimeSetOnHost()
{
// Arrange
RazorTemplateEngine engine = new RazorTemplateEngine(CreateHost(designTime: true));
// Act
GeneratorResults results = engine.GenerateCode(new StringTextBuffer("foo @bar()"), className: null, rootNamespace: null, sourceFileName: "foo.cshtml");
// Assert
Assert.True(results.Success);
Assert.Empty(results.ParserErrors);
Assert.NotNull(results.Document);
Assert.NotNull(results.GeneratedCode);
Assert.NotNull(results.DesignTimeLineMappings);
}
private static RazorEngineHost CreateHost(bool designTime = false)
{
return new RazorEngineHost(new CSharpRazorCodeLanguage())
{
DesignTimeMode = designTime
};
}
}
}
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