final case class Gen[-R, +A](sample: ZStream[R, Nothing, Sample[R, A]]) extends Product with Serializable
A Gen[R, A]
represents a generator of values of type A
, which requires
an environment R
. Generators may be random or deterministic.
- Self Type
- Gen[R, A]
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- final def !=(arg0: Any): Boolean
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- final def ##: Int
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- def <&>[R1 <: R, B](that: Gen[R1, B]): Gen[R1, (A, B)]
A symbolic alias for
zip
. - def <*>[R1 <: R, B](that: Gen[R1, B]): Gen[R1, (A, B)]
A symbolic alias for
cross
. - final def ==(arg0: Any): Boolean
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- final def asInstanceOf[T0]: T0
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- protected[lang]
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- @throws(classOf[java.lang.CloneNotSupportedException]) @native()
- def collect[B](pf: PartialFunction[A, B]): Gen[R, B]
Maps the values produced by this generator with the specified partial function, discarding any values the partial function is not defined at.
- def cross[R1 <: R, B](that: Gen[R1, B]): Gen[R1, (A, B)]
Composes this generator with the specified generator to create a cartesian product of elements.
- def crossWith[R1 <: R, B, C](that: Gen[R1, B])(f: (A, B) => C): Gen[R1, C]
Composes this generator with the specified generator to create a cartesian product of elements with the specified function.
- final def eq(arg0: AnyRef): Boolean
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- def filter(f: (A) => Boolean): Gen[R, A]
Filters the values produced by this generator, discarding any values that do not meet the specified predicate.
Filters the values produced by this generator, discarding any values that do not meet the specified predicate. Using
filter
can reduce test performance, especially if many values must be discarded. It is recommended to use combinators such asmap
andflatMap
to create generators of the desired values instead.val evens: Gen[Random, Int] = Gen.anyInt.map(_ * 2)
- def filterNot(f: (A) => Boolean): Gen[R, A]
Filters the values produced by this generator, discarding any values that meet the specified predicate.
- def finalize(): Unit
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- protected[lang]
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- @throws(classOf[java.lang.Throwable])
- def flatMap[R1 <: R, B](f: (A) => Gen[R1, B]): Gen[R1, B]
- def flatten[R1 <: R, B](implicit ev: <:<[A, Gen[R1, B]]): Gen[R1, B]
- final def getClass(): Class[_ <: AnyRef]
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- @native()
- final def isInstanceOf[T0]: Boolean
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- def map[B](f: (A) => B): Gen[R, B]
- def mapM[R1 <: R, B](f: (A) => ZIO[R1, Nothing, B]): Gen[R1, B]
Maps an effectual function over a generator.
- final def ne(arg0: AnyRef): Boolean
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- def noShrink: Gen[R, A]
Discards the shrinker for this generator.
- final def notify(): Unit
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- @native()
- final def notifyAll(): Unit
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- @native()
- def productElementNames: Iterator[String]
- Definition Classes
- Product
- def reshrink[R1 <: R, B](f: (A) => Sample[R1, B]): Gen[R1, B]
Discards the shrinker for this generator and applies a new shrinker by mapping each value to a sample using the specified function.
Discards the shrinker for this generator and applies a new shrinker by mapping each value to a sample using the specified function. This is useful when the process to shrink a value is simpler than the process used to generate it.
- def runCollect: ZIO[R, Nothing, List[A]]
Runs the generator and collects all of its values in a list.
- def runCollectN(n: Int): ZIO[R, Nothing, List[A]]
Repeatedly runs the generator and collects the specified number of values in a list.
- def runHead: ZIO[R, Nothing, Option[A]]
Runs the generator returning the first value of the generator.
- val sample: ZStream[R, Nothing, Sample[R, A]]
- final def synchronized[T0](arg0: => T0): T0
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- final def wait(): Unit
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- @throws(classOf[java.lang.InterruptedException])
- final def wait(arg0: Long, arg1: Int): Unit
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- @throws(classOf[java.lang.InterruptedException])
- final def wait(arg0: Long): Unit
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- @throws(classOf[java.lang.InterruptedException]) @native()
- def withFilter(f: (A) => Boolean): Gen[R, A]
- def zip[R1 <: R, B](that: Gen[R1, B]): Gen[R1, (A, B)]
Zips two generators together pairwise.
Zips two generators together pairwise. The new generator will generate elements as long as either generator is generating elements, running the other generator multiple times if necessary.
- def zipWith[R1 <: R, B, C](that: Gen[R1, B])(f: (A, B) => C): Gen[R1, C]
Zips two generators together pairwise with the specified function.
Zips two generators together pairwise with the specified function. The new generator will generate elements as long as either generator is generating elements, running the other generator multiple times if necessary.