public void Can_get_and_set_model_annotations()
{
var annotatable = new Annotatable();
Assert.Empty(annotatable.GetAnnotations());
var annotation = annotatable.AddAnnotation("Foo", "Bar");
Assert.NotNull(annotation);
Assert.Same(annotation, annotatable.FindAnnotation("Foo"));
Assert.Same(annotation, annotatable.GetAnnotation("Foo"));
Assert.Null(annotatable["foo"]);
Assert.Null(annotatable.FindAnnotation("foo"));
annotatable["Foo"] = "horse";
Assert.Equal("horse", annotatable["Foo"]);
annotatable["Foo"] = null;
Assert.Null(annotatable["Foo"]);
Assert.Empty(annotatable.GetAnnotations());
Assert.Equal(
CoreStrings.AnnotationNotFound("Foo", "Microsoft.EntityFrameworkCore.Infrastructure.Annotatable"),
Assert.Throws <InvalidOperationException>(() => annotatable.GetAnnotation("Foo")).Message);
}
/// <summary>
/// This is an internal API that supports the Entity Framework Core infrastructure and not subject to
/// the same compatibility standards as public APIs. It may be changed or removed without notice in
/// any release. You should only use it directly in your code with extreme caution and knowing that
/// doing so can result in application failures when updating to a new Entity Framework Core release.
/// </summary>
internal static IAnnotation GetAnnotation(IReadOnlyAnnotatable annotatable, string annotationName)
{
Check.NotEmpty(annotationName, nameof(annotationName));
var annotation = annotatable.FindAnnotation(annotationName);
if (annotation == null)
{
throw new InvalidOperationException(CoreStrings.AnnotationNotFound(annotationName, annotatable.ToString()));
}
return annotation;
}
public virtual Annotation GetAnnotation(string annotationName)
{
Check.NotEmpty(annotationName, nameof(annotationName));
var annotation = FindAnnotation(annotationName);
if (annotation == null)
{
throw new InvalidOperationException(CoreStrings.AnnotationNotFound(annotationName));
}
return(annotation);
}
public static IAnnotation GetAnnotation([NotNull] this IAnnotatable annotatable, [NotNull] string annotationName)
{
Check.NotNull(annotatable, nameof(annotatable));
Check.NotEmpty(annotationName, nameof(annotationName));
var annotation = annotatable.FindAnnotation(annotationName);
if (annotation == null)
{
throw new InvalidOperationException(CoreStrings.AnnotationNotFound(annotationName));
}
return(annotation);
}