public void WriteCSharpExpression_WithSource_WritesPadding()
{
// Arrange
var codeWriter = new CodeWriter();
var writer = new RuntimeNodeWriter()
{
WriteCSharpExpressionMethod = "Test",
};
var context = TestCodeRenderingContext.CreateRuntime();
var node = new CSharpExpressionIntermediateNode()
{
Source = new SourceSpan("test.cshtml", 8, 0, 8, 3, 0, 11),
};
var builder = IntermediateNodeBuilder.Create(node);
builder.Add(new IntermediateToken()
{
Content = "i",
Kind = TokenKind.CSharp,
});
builder.Add(new MyExtensionIntermediateNode());
builder.Add(new IntermediateToken()
{
Content = "++",
Kind = TokenKind.CSharp,
});
// Act
writer.WriteCSharpExpression(context, node);
// Assert
var csharp = context.CodeWriter.GenerateCode();
Assert.Equal(
@"
#nullable restore
#line (1,9)-(1,12) 5 ""test.cshtml""
Test(iRender Children
++);
#line default
#line hidden
#nullable disable
",
csharp,
ignoreLineEndingDifferences: true);
}
public void WriteHtmlLiteral_WithinMaxSize_WritesSingleLiteral()
{
// Arrange
var codeWriter = new CodeWriter();
var writer = new RuntimeNodeWriter();
var context = TestCodeRenderingContext.CreateRuntime();
// Act
writer.WriteHtmlLiteral(context, maxStringLiteralLength: 6, "Hello");
// Assert
var csharp = context.CodeWriter.GenerateCode();
Assert.Equal(
@"WriteLiteral(""Hello"");
",
csharp,
ignoreLineEndingDifferences: true);
}
public void WriteHtmlLiteral_GreaterThanMaxSize_SingleEmojisSplit()
{
// Arrange
var codeWriter = new CodeWriter();
var writer = new RuntimeNodeWriter();
var context = TestCodeRenderingContext.CreateRuntime();
// Act
writer.WriteHtmlLiteral(context, maxStringLiteralLength: 2, " 👦");
// Assert
var csharp = context.CodeWriter.GenerateCode();
Assert.Equal(
@"WriteLiteral("" "");
WriteLiteral(""👦"");
",
csharp,
ignoreLineEndingDifferences: true);
}
public void EndWriterScope_RendersCorrectly()
{
// Arrange
var writer = new RuntimeNodeWriter()
{
PopWriterMethod = "TestPopWriter"
};
var context = TestCodeRenderingContext.CreateRuntime();
// Act
writer.EndWriterScope(context);
// Assert
var csharp = context.CodeWriter.GenerateCode();
Assert.Equal(
@"TestPopWriter();
",
csharp,
ignoreLineEndingDifferences: true);
}
public void BeginWriterScope_UsesSpecifiedWriter_RendersCorrectly()
{
// Arrange
var writer = new RuntimeNodeWriter()
{
PushWriterMethod = "TestPushWriter"
};
var context = TestCodeRenderingContext.CreateRuntime();
// Act
writer.BeginWriterScope(context, "MyWriter");
// Assert
var csharp = context.CodeWriter.GenerateCode();
Assert.Equal(
@"TestPushWriter(MyWriter);
",
csharp,
ignoreLineEndingDifferences: true);
}
public static CodeRenderingContext CreateRuntime(
string newLineString = null,
string suppressUniqueIds = "test",
RazorSourceDocument source = null,
IntermediateNodeWriter nodeWriter = null)
{
var codeWriter = new CodeWriter();
var documentNode = new DocumentIntermediateNode();
var options = RazorCodeGenerationOptions.CreateDefault();
if (source == null)
{
source = TestRazorSourceDocument.Create();
}
var codeDocument = RazorCodeDocument.Create(source);
if (newLineString != null)
{
codeDocument.Items[CodeRenderingContext.NewLineString] = newLineString;
}
if (suppressUniqueIds != null)
{
codeDocument.Items[CodeRenderingContext.SuppressUniqueIds] = suppressUniqueIds;
}
if (nodeWriter == null)
{
nodeWriter = new RuntimeNodeWriter();
}
var context = new DefaultCodeRenderingContext(codeWriter, nodeWriter, codeDocument, documentNode, options);
context.Visitor = new RenderChildrenVisitor(context);
return(context);
}
public void WriteCSharpCode_WritesPadding_WithSource()
{
// Arrange
var codeWriter = new CodeWriter();
var writer = new RuntimeNodeWriter();
var context = TestCodeRenderingContext.CreateRuntime();
var node = new CSharpCodeIntermediateNode()
{
Source = new SourceSpan("test.cshtml", 0, 0, 0, 17),
};
IntermediateNodeBuilder.Create(node)
.Add(new IntermediateToken()
{
Kind = TokenKind.CSharp,
Content = " if (true) { }",
});
// Act
writer.WriteCSharpCode(context, node);
// Assert
var csharp = context.CodeWriter.GenerateCode();
Assert.Equal(
@"
#nullable restore
#line 1 ""test.cshtml""
if (true) { }
#line default
#line hidden
#nullable disable
",
csharp,
ignoreLineEndingDifferences: true);
}
public void WriteCSharpExpression_WithExtensionNode_WritesPadding()
{
// Arrange
var codeWriter = new CodeWriter();
var writer = new RuntimeNodeWriter()
{
WriteCSharpExpressionMethod = "Test",
};
var context = TestCodeRenderingContext.CreateRuntime();
var node = new CSharpExpressionIntermediateNode();
var builder = IntermediateNodeBuilder.Create(node);
builder.Add(new IntermediateToken()
{
Content = "i",
Kind = TokenKind.CSharp,
});
builder.Add(new MyExtensionIntermediateNode());
builder.Add(new IntermediateToken()
{
Content = "++",
Kind = TokenKind.CSharp,
});
// Act
writer.WriteCSharpExpression(context, node);
// Assert
var csharp = context.CodeWriter.GenerateCode();
Assert.Equal(
@"Test(iRender Children
++);
",
csharp,
ignoreLineEndingDifferences: true);
}
public void WriteTemplate_WritesTemplateCode()
{
// Arrange
var node = new TemplateIntermediateNode()
{
Children =
{
new CSharpExpressionIntermediateNode()
}
};
var extension = new TemplateTargetExtension()
{
TemplateTypeName = "global::TestTemplate"
};
var nodeWriter = new RuntimeNodeWriter()
{
PushWriterMethod = "TestPushWriter",
PopWriterMethod = "TestPopWriter"
};
var context = TestCodeRenderingContext.CreateRuntime(nodeWriter: nodeWriter);
// Act
extension.WriteTemplate(context, node);
// Assert
var expected = @"item => new global::TestTemplate(async(__razor_template_writer) => {
TestPushWriter(__razor_template_writer);
Render Children
TestPopWriter();
}
)";
var output = context.CodeWriter.GenerateCode();
Assert.Equal(expected, output);
}
public void WriteCSharpCodeAttributeValue_BuffersResult()
{
// Arrange
var writer = new RuntimeNodeWriter();
var content = "<input checked=\"hello-world @if(@true){ }\" />";
var sourceDocument = TestRazorSourceDocument.Create(content);
var codeDocument = RazorCodeDocument.Create(sourceDocument);
var documentNode = Lower(codeDocument);
var node = documentNode.Children.OfType <HtmlAttributeIntermediateNode>().Single().Children[1] as CSharpCodeAttributeValueIntermediateNode;
var context = TestCodeRenderingContext.CreateRuntime(source: sourceDocument);
// Act
writer.WriteCSharpCodeAttributeValue(context, node);
// Assert
var csharp = context.CodeWriter.GenerateCode();
Assert.Equal(
@"WriteAttributeValue("" "", 27, new Microsoft.AspNetCore.Mvc.Razor.HelperResult(async(__razor_attribute_value_writer) => {
PushWriter(__razor_attribute_value_writer);
#nullable restore
#line 1 ""test.cshtml""
if(@true){ }
#line default
#line hidden
#nullable disable
PopWriter();
}
), 28, 13, false);
",
csharp,
ignoreLineEndingDifferences: true);
}
public void WriteHtmlAttributeValue_RendersCorrectly()
{
// Arrange
var writer = new RuntimeNodeWriter();
var content = "<input checked=\"hello-world @false\" />";
var sourceDocument = TestRazorSourceDocument.Create(content);
var codeDocument = RazorCodeDocument.Create(sourceDocument);
var documentNode = Lower(codeDocument);
var node = documentNode.Children.OfType <HtmlAttributeIntermediateNode>().Single().Children[0] as HtmlAttributeValueIntermediateNode;
var context = TestCodeRenderingContext.CreateRuntime();
// Act
writer.WriteHtmlAttributeValue(context, node);
// Assert
var csharp = context.CodeWriter.GenerateCode();
Assert.Equal(
@"WriteAttributeValue("""", 16, ""hello-world"", 16, 11, true);
",
csharp,
ignoreLineEndingDifferences: true);
}
public void WriteCSharpCode_WhitespaceContent_DoesNothing()
{
// Arrange
var codeWriter = new CodeWriter();
var writer = new RuntimeNodeWriter();
var context = TestCodeRenderingContext.CreateRuntime();
var node = new CSharpCodeIntermediateNode();
IntermediateNodeBuilder.Create(node)
.Add(new IntermediateToken()
{
Kind = TokenKind.CSharp,
Content = " \t"
});
// Act
writer.WriteCSharpCode(context, node);
// Assert
var csharp = context.CodeWriter.GenerateCode();
Assert.Empty(csharp);
}
public void WriteUsingDirective_NoSource_WritesContent()
{
// Arrange
var codeWriter = new CodeWriter();
var writer = new RuntimeNodeWriter();
var context = TestCodeRenderingContext.CreateRuntime();
var node = new UsingDirectiveIntermediateNode()
{
Content = "System",
};
// Act
writer.WriteUsingDirective(context, node);
// Assert
var csharp = context.CodeWriter.GenerateCode();
Assert.Equal(
@"using System;
",
csharp,
ignoreLineEndingDifferences: true);
}