public void Execute_WithTargetAssembly_Works()
{
// Arrange
var testTagHelper = "TestAssembly.TestTagHelper";
var enumTagHelper = "Microsoft.CodeAnalysis.Razor.Workspaces.Test.EnumTagHelper";
var csharp = @"
using Microsoft.AspNetCore.Razor.TagHelpers;
namespace TestAssembly
{
public class TestTagHelper : TagHelper
{
public override void Process(TagHelperContext context, TagHelperOutput output) {}
}
}";
var compilation = TestCompilation.Create(_assembly, CSharpSyntaxTree.ParseText(csharp));
var descriptorProvider = new DefaultTagHelperDescriptorProvider();
var context = TagHelperDescriptorProviderContext.Create();
context.SetCompilation(compilation);
context.Items.SetTargetAssembly((IAssemblySymbol)compilation.GetAssemblyOrModuleSymbol(compilation.References.First(r => r.Display.Contains("Microsoft.CodeAnalysis.Razor.Test.dll"))));
// Act
descriptorProvider.Execute(context);
// Assert
Assert.NotNull(compilation.GetTypeByMetadataName(testTagHelper));
Assert.NotEmpty(context.Results);
Assert.Empty(context.Results.Where(f => f.GetTypeName() == testTagHelper));
Assert.NotEmpty(context.Results.Where(f => f.GetTypeName() == enumTagHelper));
}
public void Execute_WithFilterAssemblyDoesNotDiscoverTagHelpersFromReferences()
{
// Arrange
var typeName = "TestAssembly.TestTagHelper";
var csharp = @"
using Microsoft.AspNetCore.Razor.TagHelpers;
namespace TestAssembly
{
public class TestTagHelper : TagHelper
{
public override void Process(TagHelperContext context, TagHelperOutput output) {}
}
}";
var compilation = TestCompilation.Create(_assembly, CSharpSyntaxTree.ParseText(csharp));
var descriptorProvider = new DefaultTagHelperDescriptorProvider();
var context = TagHelperDescriptorProviderContext.Create();
context.SetCompilation(compilation);
context.Items.SetTagHelperDiscoveryFilter(TagHelperDiscoveryFilter.CurrentCompilation);
// Act
descriptorProvider.Execute(context);
// Assert
Assert.NotNull(compilation.GetTypeByMetadataName(typeName));
var descriptor = Assert.Single(context.Results);
Assert.Equal(typeName, descriptor.GetTypeName());
}
public void Execute_NoOpsIfCompilationIsNotSet()
{
// Arrange
var descriptorProvider = new DefaultTagHelperDescriptorProvider();
var context = TagHelperDescriptorProviderContext.Create();
// Act
descriptorProvider.Execute(context);
// Assert
Assert.Empty(context.Results);
}
public void Execute_DoesNotAddEditorBrowsableNeverDescriptorsAtDesignTime()
{
// Arrange
var editorBrowsableTypeName = "Microsoft.CodeAnalysis.Razor.Workspaces.Test.EditorBrowsableTagHelper";
var compilation = TestCompilation.Create(_assembly);
var descriptorProvider = new DefaultTagHelperDescriptorProvider();
var context = TagHelperDescriptorProviderContext.Create();
context.SetCompilation(compilation);
context.ExcludeHidden = true;
// Act
descriptorProvider.Execute(context);
// Assert
Assert.NotNull(compilation.GetTypeByMetadataName(editorBrowsableTypeName));
var nullDescriptors = context.Results.Where(descriptor => descriptor == null);
Assert.Empty(nullDescriptors);
var editorBrowsableDescriptor = context.Results.Where(descriptor => descriptor.GetTypeName() == editorBrowsableTypeName);
Assert.Empty(editorBrowsableDescriptor);
}
