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Diffstat (limited to 'test/pending/scalacheck/CheckEither.scala')
-rw-r--r-- | test/pending/scalacheck/CheckEither.scala | 253 |
1 files changed, 0 insertions, 253 deletions
diff --git a/test/pending/scalacheck/CheckEither.scala b/test/pending/scalacheck/CheckEither.scala deleted file mode 100644 index a6c728451b..0000000000 --- a/test/pending/scalacheck/CheckEither.scala +++ /dev/null @@ -1,253 +0,0 @@ - -// To run these tests: -// 1) wget http://scalacheck.googlecode.com/files/ScalaCheck-1.2.jar -// 2) scalac -classpath ScalaCheck-1.2.jar Either.scala -// 3) scala -classpath .:ScalaCheck-1.2.jar scala.CheckEither -// 4) observe passing tests - -import org.scalacheck.Arbitrary -import org.scalacheck.Arbitrary.{arbitrary, arbThrowable} -import org.scalacheck.Gen.oneOf -import org.scalacheck.{Prop, StdRand} -import org.scalacheck.Prop._ -import org.scalacheck.ConsoleReporter.{testReport, propReport} -import org.scalacheck.Test.{Params, check} -import org.scalacheck.ConsoleReporter.testStatsEx -import Function.tupled - -object CheckEither { - implicit def arbitraryEither[X, Y](implicit xa: Arbitrary[X], ya: Arbitrary[Y]): Arbitrary[Either[X, Y]] = - Arbitrary[Either[X, Y]](oneOf(arbitrary[X].map(Left(_)), arbitrary[Y].map(Right(_)))) - - val prop_either1 = property((n: Int) => Left(n).either(x => x, b => error("fail")) == n) - - val prop_either2 = property((n: Int) => Right(n).either(a => error("fail"), x => x) == n) - - val prop_swap = property((e: Either[Int, Int]) => e match { - case Left(a) => e.swap.right.value == a - case Right(b) => e.swap.left.value == b - }) - - val prop_isLeftRight = property((e: Either[Int, Int]) => e.isLeft != e.isRight) - - object CheckLeftProjection { - val prop_valueE = property((n: Int, s: String) => Left(n).left.valueE(s) == n) - - val prop_value = property((n: Int) => Left(n).left.value == n) - - val prop_on = property((e: Either[Int, Int]) => e.left.on((_: Int) + 1) == (e match { - case Left(a) => a - case Right(b) => b + 1 - })) - - val prop_getOrElse = property((e: Either[Int, Int], or: Int) => e.left.getOrElse(or) == (e match { - case Left(a) => a - case Right(_) => or - })) - - val prop_forall = property((e: Either[Int, Int]) => - e.left.forall(_ % 2 == 0) == (e.isRight || e.left.value % 2 == 0)) - - val prop_exists = property((e: Either[Int, Int]) => - e.left.exists(_ % 2 == 0) == (e.isLeft && e.left.value % 2 == 0)) - - val prop_flatMapLeftIdentity = property((e: Either[Int, Int], n: Int, s: String) => { - def f(x: Int) = if(x % 2 == 0) Left(s) else Right(s) - Left(n).left.flatMap(f(_)) == f(n)}) - - val prop_flatMapRightIdentity = property((e: Either[Int, Int]) => e.left.flatMap(Left(_)) == e) - - val prop_flatMapComposition = property((e: Either[Int, Int]) => { - def f(x: Int) = if(x % 2 == 0) Left(x) else Right(x) - def g(x: Int) = if(x % 7 == 0) Right(x) else Left(x) - e.left.flatMap(f(_)).left.flatMap(g(_)) == e.left.flatMap(f(_).left.flatMap(g(_)))}) - - val prop_mapIdentity = property((e: Either[Int, Int]) => e.left.map(x => x) == e) - - val prop_mapComposition = property((e: Either[String, Int]) => { - def f(s: String) = s.toLowerCase - def g(s: String) = s.reverse - e.left.map(x => f(g(x))) == e.left.map(x => g(x)).left.map(f(_))}) - - val prop_filter = property((e: Either[Int, Int], x: Int) => e.left.filter(_ % 2 == 0) == - (if(e.isRight || e.left.value % 2 != 0) None else Some(e))) - - val prop_ap = property((e1: Either[Int, Int], e2: Either[Int, Int]) => { - val ee2 = e2.left map (n => (x: Int) => x + n) - e1.left.ap(ee2) == (ee2 match { - case Left(f) => e1 match { - case Left(a) => Left(f(a)) - case Right(b) => Right(b) - } - case Right(b) => Right(b) - }) - }) - - val prop_seq = property((e: Either[Int, Int]) => e.left.seq == (e match { - case Left(a) => Seq.singleton(a) - case Right(_) => Seq.empty - })) - - val prop_option = property((e: Either[Int, Int]) => e.left.option == (e match { - case Left(a) => Some(a) - case Right(_) => None - })) - } - - object CheckRightProjection { - val prop_valueE = property((n: Int, s: String) => Right(n).right.valueE(s) == n) - - val prop_value = property((n: Int) => Right(n).right.value == n) - - val prop_on = property((e: Either[Int, Int]) => e.right.on((_: Int) + 1) == (e match { - case Left(a) => a + 1 - case Right(b) => b - })) - - val prop_getOrElse = property((e: Either[Int, Int], or: Int) => e.right.getOrElse(or) == (e match { - case Left(_) => or - case Right(b) => b - })) - - val prop_forall = property((e: Either[Int, Int]) => - e.right.forall(_ % 2 == 0) == (e.isLeft || e.right.value % 2 == 0)) - - val prop_exists = property((e: Either[Int, Int]) => - e.right.exists(_ % 2 == 0) == (e.isRight && e.right.value % 2 == 0)) - - val prop_flatMapLeftIdentity = property((e: Either[Int, Int], n: Int, s: String) => { - def f(x: Int) = if(x % 2 == 0) Left(s) else Right(s) - Right(n).right.flatMap(f(_)) == f(n)}) - - val prop_flatMapRightIdentity = property((e: Either[Int, Int]) => e.right.flatMap(Right(_)) == e) - - val prop_flatMapComposition = property((e: Either[Int, Int]) => { - def f(x: Int) = if(x % 2 == 0) Left(x) else Right(x) - def g(x: Int) = if(x % 7 == 0) Right(x) else Left(x) - e.right.flatMap(f(_)).right.flatMap(g(_)) == e.right.flatMap(f(_).right.flatMap(g(_)))}) - - val prop_mapIdentity = property((e: Either[Int, Int]) => e.right.map(x => x) == e) - - val prop_mapComposition = property((e: Either[Int, String]) => { - def f(s: String) = s.toLowerCase - def g(s: String) = s.reverse - e.right.map(x => f(g(x))) == e.right.map(x => g(x)).right.map(f(_))}) - - val prop_filter = property((e: Either[Int, Int], x: Int) => e.right.filter(_ % 2 == 0) == - (if(e.isLeft || e.right.value % 2 != 0) None else Some(e))) - - val prop_ap = property((e1: Either[Int, Int], e2: Either[Int, Int]) => { - val ee2 = e2.right map (n => (x: Int) => x + n) - e1.right.ap(ee2) == (ee2 match { - case Left(a) => Left(a) - case Right(f) => e1 match { - case Left(a) => Left(a) - case Right(b) => Right(f(b)) - } - }) - }) - - val prop_seq = property((e: Either[Int, Int]) => e.right.seq == (e match { - case Left(_) => Seq.empty - case Right(b) => Seq.singleton(b) - })) - - val prop_option = property((e: Either[Int, Int]) => e.right.option == (e match { - case Left(_) => None - case Right(b) => Some(b) - })) - } - - val prop_Either_left = property((n: Int) => Either.left(n).left.value == n) - - val prop_Either_right = property((n: Int) => Either.right(n).right.value == n) - - val prop_Either_joinLeft = property((e: Either[Either[Int, Int], Int]) => e match { - case Left(ee) => Either.joinLeft(e) == ee - case Right(n) => Either.joinLeft(e) == Right(n) - }) - - val prop_Either_joinRight = property((e: Either[Int, Either[Int, Int]]) => e match { - case Left(n) => Either.joinRight(e) == Left(n) - case Right(ee) => Either.joinRight(e) == ee - }) - - val prop_Either_lefts = property((es: List[Either[Int, Int]]) => - Either.lefts(es) == es.filter(_.isLeft).map(_.left.value)) - - val prop_Either_rights = property((es: List[Either[Int, Int]]) => - Either.rights(es) == es.filter(_.isRight).map(_.right.value)) - - val prop_Either_leftRights = property((es: List[Either[Int, Int]]) => - Either.rights(es) == es.filter(_.isRight).map(_.right.value)) - - val prop_Either_throws = property((n: Int) => - Either.throws(n) == Right(n) && Either.throws(error("error")).isLeft) - - val prop_Either_throwIt = property((e: Either[Throwable, Int]) => - try { - Either.throwIt(e) == e.right.value - } catch { - case (t) => e.isLeft && e.left.value == t - }) - - val prop_Either_reduce = property((e: Either[Int, Int]) => - Either.reduce(e) == (e match { - case Left(a) => a - case Right(a) => a - })) - - val prop_Either_iif = property((c: Boolean, a: Int, b: Int) => - Either.iif(c, a, b) == (if(c) Right(b) else Left(a))) - - val tests = List( - ("prop_either1", prop_either1), - ("prop_either2", prop_either2), - ("prop_swap", prop_swap), - ("prop_isLeftRight", prop_isLeftRight), - ("Left.prop_valueE", CheckLeftProjection.prop_valueE), - ("Left.prop_value", CheckLeftProjection.prop_value), - ("Left.prop_getOrElse", CheckLeftProjection.prop_getOrElse), - ("Left.prop_forall", CheckLeftProjection.prop_forall), - ("Left.prop_exists", CheckLeftProjection.prop_exists), - ("Left.prop_flatMapLeftIdentity", CheckLeftProjection.prop_flatMapLeftIdentity), - ("Left.prop_flatMapRightIdentity", CheckLeftProjection.prop_flatMapRightIdentity), - ("Left.prop_flatMapComposition", CheckLeftProjection.prop_flatMapComposition), - ("Left.prop_mapIdentity", CheckLeftProjection.prop_mapIdentity), - ("Left.prop_mapComposition", CheckLeftProjection.prop_mapComposition), - ("Left.prop_filter", CheckLeftProjection.prop_filter), - ("Left.prop_ap", CheckLeftProjection.prop_ap), - ("Left.prop_seq", CheckLeftProjection.prop_seq), - ("Left.prop_option", CheckLeftProjection.prop_option), - ("Right.prop_valueE", CheckRightProjection.prop_valueE), - ("Right.prop_value", CheckRightProjection.prop_value), - ("Right.prop_getOrElse", CheckRightProjection.prop_getOrElse), - ("Right.prop_forall", CheckRightProjection.prop_forall), - ("Right.prop_exists", CheckRightProjection.prop_exists), - ("Right.prop_flatMapLeftIdentity", CheckRightProjection.prop_flatMapLeftIdentity), - ("Right.prop_flatMapRightIdentity", CheckRightProjection.prop_flatMapRightIdentity), - ("Right.prop_flatMapComposition", CheckRightProjection.prop_flatMapComposition), - ("Right.prop_mapIdentity", CheckRightProjection.prop_mapIdentity), - ("Right.prop_mapComposition", CheckRightProjection.prop_mapComposition), - ("Right.prop_filter", CheckRightProjection.prop_filter), - ("Right.prop_ap", CheckRightProjection.prop_ap), - ("Right.prop_seq", CheckRightProjection.prop_seq), - ("Right.prop_option", CheckRightProjection.prop_option), - ("prop_Either_left", prop_Either_left), - ("prop_Either_right", prop_Either_right), - ("prop_Either_joinLeft", prop_Either_joinLeft), - ("prop_Either_joinRight", prop_Either_joinRight), - ("prop_Either_lefts", prop_Either_lefts), - ("prop_Either_rights", prop_Either_rights), - ("prop_Either_leftRights", prop_Either_leftRights), - ("prop_Either_throws", prop_Either_throws), - ("prop_Either_throwIt", prop_Either_throwIt), - ("prop_Either_reduce", prop_Either_reduce), - ("prop_Either_iif", prop_Either_iif) - ) - - def main(args: Array[String]) = - tests foreach (tupled((name, prop) => - testStatsEx(name, testReport(check(Params(500, 0, 0, 500, StdRand), prop, propReport))))) -} - |