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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/t4989.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/t4989.scala')
-rw-r--r-- | tests/untried/neg/t4989.scala | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/tests/untried/neg/t4989.scala b/tests/untried/neg/t4989.scala new file mode 100644 index 000000000..e7ff80ed7 --- /dev/null +++ b/tests/untried/neg/t4989.scala @@ -0,0 +1,68 @@ +abstract class A0 { + def print(): String +} + +class A extends A0 { + def print(): String = "A" +} + +abstract class B extends A { + def print() : String +} + +class C extends B { + override def print(): String = super.print() // should be an error +} + +trait T extends B { + override def print(): String = super.print() // should be an error +} + +class D extends A { + override def print(): String = super.print() // okay +} + + +// it's okay do this when trait are in the mix, as the +// suitable super accessor methods are used. +object ConcreteMethodAndIntermediaryAreTraits { + trait T1 { + def print(): String = "" + } + + trait T2 extends T1 { + def print(): String + } + + class C3 extends T2 { + def print(): String = super.print() // okay + } +} + +object IntermediaryIsTrait { + class T1 { + def print(): String = "" + } + + trait T2 extends T1 { + def print(): String + } + + class C3 extends T2 { + override def print(): String = super.print() // okay + } +} + +object ConcreteMethodIsTrait { + trait T1 { + def print(): String = "" + } + + abstract class T2 extends T1 { + def print(): String + } + + class C3 extends T2 { + override def print(): String = super.print() // okay + } +} |