public void IsValidCompilation_ReturnsFalseIfSystemStringCannotBeFound()
{
// Arrange
var references = new[]
{
MetadataReference.CreateFromFile(typeof(ITagHelper).Assembly.Location),
};
var compilation = CSharpCompilation.Create("Test", references: references);
// Act
var result = CompilationTagHelperFeature.IsValidCompilation(compilation);
// Assert
Assert.False(result);
}
public void IsValidCompilation_ReturnsTrueIfWellKnownTypesAreFound()
{
// Arrange
var references = new[]
{
MetadataReference.CreateFromFile(typeof(string).Assembly.Location),
MetadataReference.CreateFromFile(typeof(ITagHelper).Assembly.Location),
};
var compilation = CSharpCompilation.Create("Test", references: references);
// Act
var result = CompilationTagHelperFeature.IsValidCompilation(compilation);
// Assert
Assert.True(result);
}
protected virtual async Task <TagHelperResolutionResult> GetTagHelpersAsync(ProjectSnapshot project, RazorProjectEngine engine)
{
if (project == null)
{
throw new ArgumentNullException(nameof(project));
}
if (engine == null)
{
throw new ArgumentNullException(nameof(engine));
}
if (project.WorkspaceProject == null)
{
return(TagHelperResolutionResult.Empty);
}
var providers = engine.Engine.Features.OfType <ITagHelperDescriptorProvider>().ToArray();
if (providers.Length == 0)
{
return(TagHelperResolutionResult.Empty);
}
var results = new List <TagHelperDescriptor>();
var context = TagHelperDescriptorProviderContext.Create(results);
context.ExcludeHidden = true;
context.IncludeDocumentation = true;
var compilation = await project.WorkspaceProject.GetCompilationAsync().ConfigureAwait(false);
if (CompilationTagHelperFeature.IsValidCompilation(compilation))
{
context.SetCompilation(compilation);
}
for (var i = 0; i < providers.Length; i++)
{
var provider = providers[i];
provider.Execute(context);
}
return(new TagHelperResolutionResult(results, Array.Empty <RazorDiagnostic>()));
}