public void GetDescriptors_ReturnsNothingForUnregisteredTags()
{
// Arrange
var divDescriptor = new TagHelperDescriptor
{
TagName = "div",
TypeName = "foo1",
AssemblyName = "SomeAssembly",
};
var spanDescriptor = new TagHelperDescriptor
{
TagName = "span",
TypeName = "foo2",
AssemblyName = "SomeAssembly",
};
var descriptors = new TagHelperDescriptor[] { divDescriptor, spanDescriptor };
var provider = new TagHelperDescriptorProvider(descriptors);
// Act
var retrievedDescriptors = provider.GetDescriptors(
tagName: "foo",
attributeNames: Enumerable.Empty <string>(),
parentTagName: "p");
// Assert
Assert.Empty(retrievedDescriptors);
}
public void GetDescriptors_ReturnsDescriptorsWithRequiredAttributes(
string tagName,
IEnumerable <string> providedAttributes,
IEnumerable <TagHelperDescriptor> availableDescriptors,
IEnumerable <TagHelperDescriptor> expectedDescriptors)
{
// Arrange
var provider = new TagHelperDescriptorProvider(availableDescriptors);
// Act
var resolvedDescriptors = provider.GetDescriptors(tagName, providedAttributes, parentTagName: "p");
// Assert
Assert.Equal(expectedDescriptors, resolvedDescriptors, CaseSensitiveTagHelperDescriptorComparer.Default);
}
public void GetDescriptors_ReturnsNothingForUnprefixedTags(string tagName)
{
// Arrange
var divDescriptor = CreatePrefixedDescriptor("th:", tagName, "foo1");
var descriptors = new[] { divDescriptor };
var provider = new TagHelperDescriptorProvider(descriptors);
// Act
var retrievedDescriptorsDiv = provider.GetDescriptors(
tagName: "div",
attributeNames: Enumerable.Empty <string>(),
parentTagName: "p");
// Assert
Assert.Empty(retrievedDescriptorsDiv);
}
public void EvaluateData(
TagHelperDescriptorProvider provider,
string documentContent,
MarkupBlock expectedOutput,
IEnumerable<RazorError> expectedErrors)
{
var errorSink = new ErrorSink();
var results = ParseDocument(documentContent, errorSink);
var rewritingContext = new RewritingContext(results.Document, errorSink);
new TagHelperParseTreeRewriter(provider).Rewrite(rewritingContext);
var rewritten = rewritingContext.SyntaxTree;
var actualErrors = errorSink.Errors.OrderBy(error => error.Location.AbsoluteIndex)
.ToList();
EvaluateRazorErrors(actualErrors, expectedErrors.ToList());
EvaluateParseTree(rewritten, expectedOutput);
}
public void GetDescriptors_ReturnsCatchAllsWithEveryTagName()
{
// Arrange
var divDescriptor = new TagHelperDescriptor
{
TagName = "div",
TypeName = "foo1",
AssemblyName = "SomeAssembly",
};
var spanDescriptor = new TagHelperDescriptor
{
TagName = "span",
TypeName = "foo2",
AssemblyName = "SomeAssembly",
};
var catchAllDescriptor = new TagHelperDescriptor
{
TagName = TagHelperDescriptorProvider.ElementCatchAllTarget,
TypeName = "foo3",
AssemblyName = "SomeAssembly",
};
var descriptors = new TagHelperDescriptor[] { divDescriptor, spanDescriptor, catchAllDescriptor };
var provider = new TagHelperDescriptorProvider(descriptors);
// Act
var divDescriptors = provider.GetDescriptors(
tagName: "div",
attributeNames: Enumerable.Empty <string>(),
parentTagName: "p");
var spanDescriptors = provider.GetDescriptors(
tagName: "span",
attributeNames: Enumerable.Empty <string>(),
parentTagName: "p");
// Assert
// For divs
Assert.Equal(2, divDescriptors.Count());
Assert.Contains(divDescriptor, divDescriptors);
Assert.Contains(catchAllDescriptor, divDescriptors);
// For spans
Assert.Equal(2, spanDescriptors.Count());
Assert.Contains(spanDescriptor, spanDescriptors);
Assert.Contains(catchAllDescriptor, spanDescriptors);
}
public void GetDescriptors_ReturnsDescriptorsForPrefixedTags()
{
// Arrange
var divDescriptor = CreatePrefixedDescriptor("th:", "div", "foo1");
var descriptors = new[] { divDescriptor };
var provider = new TagHelperDescriptorProvider(descriptors);
// Act
var retrievedDescriptors = provider.GetDescriptors(
tagName: "th:div",
attributeNames: Enumerable.Empty <string>(),
parentTagName: "p");
// Assert
var descriptor = Assert.Single(retrievedDescriptors);
Assert.Same(divDescriptor, descriptor);
}
public void GetDescriptors_ReturnsEmptyDescriptorsWithPrefixAsTagName()
{
// Arrange
var catchAllDescriptor = CreatePrefixedDescriptor(
"th",
TagHelperDescriptorProvider.ElementCatchAllTarget,
"foo1");
var descriptors = new[] { catchAllDescriptor };
var provider = new TagHelperDescriptorProvider(descriptors);
// Act
var resolvedDescriptors = provider.GetDescriptors(
tagName: "th",
attributeNames: Enumerable.Empty <string>(),
parentTagName: "p");
// Assert
Assert.Empty(resolvedDescriptors);
}
public void GetDescriptors_DuplicateDescriptorsAreNotPartOfTagHelperDescriptorPool()
{
// Arrange
var divDescriptor = new TagHelperDescriptor
{
TagName = "div",
TypeName = "foo1",
AssemblyName = "SomeAssembly",
};
var descriptors = new TagHelperDescriptor[] { divDescriptor, divDescriptor };
var provider = new TagHelperDescriptorProvider(descriptors);
// Act
var retrievedDescriptors = provider.GetDescriptors(
tagName: "div",
attributeNames: Enumerable.Empty <string>(),
parentTagName: "p");
// Assert
var descriptor = Assert.Single(retrievedDescriptors);
Assert.Same(divDescriptor, descriptor);
}
public void GetDescriptors_ReturnsCatchAllDescriptorsForPrefixedTags()
{
// Arrange
var catchAllDescriptor = CreatePrefixedDescriptor("th:", TagHelperDescriptorProvider.ElementCatchAllTarget, "foo1");
var descriptors = new[] { catchAllDescriptor };
var provider = new TagHelperDescriptorProvider(descriptors);
// Act
var retrievedDescriptorsDiv = provider.GetDescriptors(
tagName: "th:div",
attributeNames: Enumerable.Empty <string>(),
parentTagName: "p");
var retrievedDescriptorsSpan = provider.GetDescriptors(
tagName: "th:span",
attributeNames: Enumerable.Empty <string>(),
parentTagName: "p");
// Assert
var descriptor = Assert.Single(retrievedDescriptorsDiv);
Assert.Same(catchAllDescriptor, descriptor);
descriptor = Assert.Single(retrievedDescriptorsSpan);
Assert.Same(catchAllDescriptor, descriptor);
}
public void GetDescriptors_OnlyUnderstandsSinglePrefix()
{
// Arrange
var divDescriptor = CreatePrefixedDescriptor("th:", "div", "foo1");
var spanDescriptor = CreatePrefixedDescriptor("th2:", "span", "foo2");
var descriptors = new[] { divDescriptor, spanDescriptor };
var provider = new TagHelperDescriptorProvider(descriptors);
// Act
var retrievedDescriptorsDiv = provider.GetDescriptors(
tagName: "th:div",
attributeNames: Enumerable.Empty <string>(),
parentTagName: "p");
var retrievedDescriptorsSpan = provider.GetDescriptors(
tagName: "th2:span",
attributeNames: Enumerable.Empty <string>(),
parentTagName: "p");
// Assert
var descriptor = Assert.Single(retrievedDescriptorsDiv);
Assert.Same(divDescriptor, descriptor);
Assert.Empty(retrievedDescriptorsSpan);
}
private ParserResults ParseCore(ITextDocument input)
{
// Setup the parser context
var errorSink = new ErrorSink();
var context = new ParserContext(input, CodeParser, MarkupParser, MarkupParser, errorSink)
{
DesignTimeMode = DesignTimeMode
};
MarkupParser.Context = context;
CodeParser.Context = context;
// Execute the parse
MarkupParser.ParseDocument();
// Get the result
var results = context.CompleteParse();
// Rewrite whitespace if supported
var rewritingContext = new RewritingContext(results.Document, errorSink);
foreach (ISyntaxTreeRewriter rewriter in Optimizers)
{
rewriter.Rewrite(rewritingContext);
}
var descriptors = Enumerable.Empty<TagHelperDescriptor>();
if (TagHelperDescriptorResolver != null)
{
descriptors = GetTagHelperDescriptors(rewritingContext.SyntaxTree, rewritingContext.ErrorSink);
var tagHelperProvider = new TagHelperDescriptorProvider(descriptors);
var tagHelperParseTreeRewriter = new TagHelperParseTreeRewriter(tagHelperProvider);
// Rewrite the document to utilize tag helpers
tagHelperParseTreeRewriter.Rewrite(rewritingContext);
}
var syntaxTree = rewritingContext.SyntaxTree;
// Link the leaf nodes into a chain
Span prev = null;
foreach (Span node in syntaxTree.Flatten())
{
node.Previous = prev;
if (prev != null)
{
prev.Next = node;
}
prev = node;
}
// Return the new result
return new ParserResults(syntaxTree, descriptors, errorSink);
}
