public void Customize_ShouldAddOptionsBuilderToFixture(
            Fixture fixture,
            DbContextCustomization customization)
        {
            fixture.Customize(customization);

            fixture.Customizations.Should()
            .ContainSingle(x => x.GetType() == typeof(DbContextOptionsSpecimenBuilder));
        }
 public void Customize_ForNullFixture_ShouldThrow(
     DbContextCustomization customization)
 {
     Action act = () => customization.Customize(default);