Question

I have two attributes – MigrationAttribute and TestDataMigrationAttribute : MigrationAttribute. How can I assert that a class has applied TestDataMigrationAttribute but not MigrationAttribute (which is the parent attribute class)?

Answer 1

  object[] attributes = typeof(MyTestClass).GetCustomAttributes(typeof(MigrationAttribute), true);
  Assert.IsNotNull(attributes);
  Assert.IsTrue(attributes.Any(x => x is TestDataMigrationAttribute));
  Assert.IsFalse(attributes.Any(x => x is MigrationAttribute && !(x is TestDataMigrationAttribute)));

(assuming you can define both attributes on the class)