Defines a custom way to normalize instances of a type.
For example, to normalize Doubles by truncating off any decimal part, you might write:
import org.scalactic._
val truncated =
new Normalization[Double] {
def normalized(d: Double) = d.floor
}
Given this definition you could use it with the Explicitly DSL like this:
import org.scalatest._
import Matchers._
import TypeCheckedTripleEquals._
(2.1 should === (2.0)) (after being truncated)
Note that to use a Normalization with the Explicitly DSL, you'll need to use TypeCheckedTripleEquals. If you're just using plain-old TripleEquals, you'll need a Uniformity, a Normalization subclass.
If you make the truncatedval implicit and import or mix in the members of NormMethods, you can access the behavior by invoking .norm on Doubles.
implicit val doubleNormalization = truncated
import NormMethods._
val d = 2.1
d.norm // returns 2.0
Returns a new Normalization that composes this and the passed Normalization.
Returns a new Normalization that composes this and the passed Normalization.
The normalized method of the Normalization returned by this method returns a normalized form of the passed object obtained by forwarding the passed value first to this Normalization's normalized method, then passing that result to the other Normalization's normalized method. Essentially, the body of the composed normalized method is:
Converts this Normalization to a NormalizingEquivalence[A] whose normalized method delegates to this Normalization[A] and whose afterNormalizationEquivalence field returns the implicitly passed Equivalence[A].
Converts this Normalization to a NormalizingEquivalence[A] whose normalized method delegates to this Normalization[A] and whose afterNormalizationEquivalence field returns the implicitly passed Equivalence[A].
Value parameters
equivalence
the Equivalence that the returned NormalizingEquivalence will delegate to determine equality after normalizing both left and right (if appropriate) sides.