diff options
Diffstat (limited to 'test/files/run/manifests.scala')
| -rw-r--r-- | test/files/run/manifests.scala | 46 |
1 files changed, 23 insertions, 23 deletions
diff --git a/test/files/run/manifests.scala b/test/files/run/manifests.scala index ed6efab70d..1da06b8aee 100644 --- a/test/files/run/manifests.scala +++ b/test/files/run/manifests.scala @@ -4,15 +4,15 @@ object Test val CO, IN, CONTRA = Value } import Variances.{ CO, IN, CONTRA } - + object SubtypeRelationship extends Enumeration { val NONE, SAME, SUB, SUPER = Value } import SubtypeRelationship.{ NONE, SAME, SUB, SUPER } - + class VarianceTester[T, U, CC[_]](expected: Variances.Value)( implicit ev1: Manifest[T], ev2: Manifest[U], ev3: Manifest[CC[T]], ev4: Manifest[CC[U]]) { - + def elements = List(ev1 <:< ev2, ev2 <:< ev1) def containers = List(ev3 <:< ev4, ev4 <:< ev3) @@ -20,13 +20,13 @@ object Test def isSame = typeCompare[T, U] == SAME def isSub = typeCompare[T, U] == SUB def isSuper = typeCompare[T, U] == SUPER - + def showsCovariance = (elements == containers) def showsContravariance = (elements == containers.reverse) def showsInvariance = containers forall (_ == isSame) def allContainerVariances = List(showsCovariance, showsInvariance, showsContravariance) - + def showsExpectedVariance = if (isUnrelated) allContainerVariances forall (_ == false) else if (isSame) allContainerVariances forall (_ == true) @@ -36,55 +36,55 @@ object Test case CONTRA => showsContravariance && !showsCovariance && !showsInvariance } } - + def showsCovariance[T, U, CC[_]](implicit ev1: Manifest[T], ev2: Manifest[U], ev3: Manifest[CC[T]], ev4: Manifest[CC[U]]) = new VarianceTester[T, U, CC](CO) showsExpectedVariance def showsInvariance[T, U, CC[_]](implicit ev1: Manifest[T], ev2: Manifest[U], ev3: Manifest[CC[T]], ev4: Manifest[CC[U]]) = new VarianceTester[T, U, CC](IN) showsExpectedVariance - + def showsContravariance[T, U, CC[_]](implicit ev1: Manifest[T], ev2: Manifest[U], ev3: Manifest[CC[T]], ev4: Manifest[CC[U]]) = new VarianceTester[T, U, CC](CONTRA) showsExpectedVariance - + def typeCompare[T, U](implicit ev1: Manifest[T], ev2: Manifest[U]) = (ev1 <:< ev2, ev2 <:< ev1) match { case (true, true) => SAME case (true, false) => SUB case (false, true) => SUPER case (false, false) => NONE } - + def assertAnyRef[T: Manifest] = List( manifest[T] <:< manifest[Any], manifest[T] <:< manifest[AnyRef], !(manifest[T] <:< manifest[AnyVal]) ) foreach (assert(_, "assertAnyRef")) - + def assertAnyVal[T: Manifest] = List( manifest[T] <:< manifest[Any], !(manifest[T] <:< manifest[AnyRef]), manifest[T] <:< manifest[AnyVal] ) foreach (assert(_, "assertAnyVal")) - + def assertSameType[T: Manifest, U: Manifest] = assert(typeCompare[T, U] == SAME, "assertSameType") def assertSuperType[T: Manifest, U: Manifest] = assert(typeCompare[T, U] == SUPER, "assertSuperType") def assertSubType[T: Manifest, U: Manifest] = assert(typeCompare[T, U] == SUB, "assertSubType") def assertNoRelationship[T: Manifest, U: Manifest] = assert(typeCompare[T, U] == NONE, "assertNoRelationship") - + def testVariancesVia[T: Manifest, U: Manifest] = assert( - typeCompare[T, U] == SUB && + typeCompare[T, U] == SUB && showsCovariance[T, U, List] && showsInvariance[T, U, Set], "testVariancesVia" ) - + def runAllTests = { assertAnyVal[AnyVal] assertAnyVal[Unit] - assertAnyVal[Int] - assertAnyVal[Double] + assertAnyVal[Int] + assertAnyVal[Double] assertAnyVal[Boolean] assertAnyVal[Char] - + assertAnyRef[AnyRef] assertAnyRef[java.lang.Object] assertAnyRef[java.lang.Integer] @@ -94,7 +94,7 @@ object Test assertAnyRef[String] assertAnyRef[scala.List[String]] assertAnyRef[scala.List[_]] - + // variance doesn't work yet // testVariancesVia[String, Any] // testVariancesVia[String, AnyRef] @@ -102,11 +102,11 @@ object Test assertSubType[List[String], List[Any]] assertSubType[List[String], List[AnyRef]] assertNoRelationship[List[String], List[AnyVal]] - + assertSubType[List[Int], List[Any]] assertSubType[List[Int], List[AnyVal]] assertNoRelationship[List[Int], List[AnyRef]] - + // Nothing assertSubType[Nothing, Any] assertSubType[Nothing, AnyVal] @@ -115,7 +115,7 @@ object Test assertSubType[Nothing, List[String]] assertSubType[Nothing, Null] assertSameType[Nothing, Nothing] - + // Null assertSubType[Null, Any] assertNoRelationship[Null, AnyVal] @@ -124,7 +124,7 @@ object Test assertSubType[Null, List[String]] assertSameType[Null, Null] assertSuperType[Null, Nothing] - + // Any assertSameType[Any, Any] assertSuperType[Any, AnyVal] @@ -133,7 +133,7 @@ object Test assertSuperType[Any, List[String]] assertSuperType[Any, Null] assertSuperType[Any, Nothing] - + // Misc unrelated types assertNoRelationship[Unit, AnyRef] assertNoRelationship[Unit, Int] |