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);
}
