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author | Samuel Gruetter <samuel.gruetter@epfl.ch> | 2014-03-12 22:44:33 +0100 |
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committer | Samuel Gruetter <samuel.gruetter@epfl.ch> | 2014-03-12 22:44:33 +0100 |
commit | 9ef5f6817688f814a3450126aa7383b0928e80a0 (patch) | |
tree | 5727a2f7f7fd665cefdb312af2785c692f04377c /tests/untried/neg/unchecked.scala | |
parent | 194be919664447631ba55446eb4874979c908d27 (diff) | |
download | dotty-9ef5f6817688f814a3450126aa7383b0928e80a0.tar.gz dotty-9ef5f6817688f814a3450126aa7383b0928e80a0.tar.bz2 dotty-9ef5f6817688f814a3450126aa7383b0928e80a0.zip |
add tests from scala/test/files/{pos,neg}
with explicit Unit return type
Diffstat (limited to 'tests/untried/neg/unchecked.scala')
-rw-r--r-- | tests/untried/neg/unchecked.scala | 74 |
1 files changed, 74 insertions, 0 deletions
diff --git a/tests/untried/neg/unchecked.scala b/tests/untried/neg/unchecked.scala new file mode 100644 index 000000000..e491b253b --- /dev/null +++ b/tests/untried/neg/unchecked.scala @@ -0,0 +1,74 @@ +import language.existentials + +object Test { + class Def[T] + class Exp[T] + class Contra[-T] { def head[T1 <: T] : T1 = ??? } + class Cov[+T] { } + + case class ArrayApply[T](x: Exp[Array[T]], i: Exp[Int], j: Exp[_]) extends Def[T] + + val IntArrayApply = ArrayApply[Int](new Exp[Array[Int]], new Exp[Int], new Exp[Int]) + + def f(x: Any) = x match { + case xs: Iterable[Any] => xs.head // okay + case _ => 0 + } + def f2(x: Any) = x match { + case xs: Iterable[String] => xs.head // unchecked + case _ => 0 + } + def f3(x: Any) = x match { + case xs: Set[Any] => xs.head // unchecked + case _ => 0 + } + def f4(x: Any) = x match { + case xs: Map[Any, Any] => xs.head // unchecked + case _ => 0 + } + + def cf1(x: Any) = x match { + case xs: Contra[Nothing] => xs.head // okay + case _ => 0 + } + def cf2(x: Any) = x match { + case xs: Contra[List[Nothing]] => xs.head // unchecked + case _ => 0 + } + + def co1(x: List[Cov[List[Int]]]) = x match { + case _: Seq[Cov[Seq[Any]]] => true // okay + case _ => false + } + + def g[T](x: Def[T]) = x match { + case ArrayApply(x: Exp[Array[T]], i: Exp[Int], _) => x // okay + case _ => 0 + } + + def g2[T](x: Def[T]) = x match { + case ArrayApply(x: Exp[Array[T]], _, j: Exp[String]) => x // unchecked + case _ => 0 + } + + def g3[T](x: Any) = x match { + case ArrayApply(x: Exp[Array[T]], _, _) => x // unchecked + case _ => 0 + } + + def g4 = IntArrayApply match { + case ArrayApply(x: Exp[Array[Int]], _, _) => x // okay + case _ => () + } + def g5[T](x: ArrayApply[Int]) = x match { + case ArrayApply(x: Exp[Array[Int]], _, _) => x // okay + case _ => 0 + } + + // Nope + // + // def g5 = IntArrayApply match { + // case ArrayApply(x: Exp[Array[String]], _, _) => x // nope + // case _ => () + // } +} |