X-Git-Url: https://gerrit.simantics.org/r/gitweb?a=blobdiff_plain;f=tests%2Forg.simantics.scl.compiler.tests%2Fsrc%2Forg%2Fsimantics%2Fscl%2Fcompiler%2Ftests%2Fscl%2FInstanceHierarchy.scl;fp=tests%2Forg.simantics.scl.compiler.tests%2Fsrc%2Forg%2Fsimantics%2Fscl%2Fcompiler%2Ftests%2Fscl%2FInstanceHierarchy.scl;h=1c751f397febd1f8fa59ec90fb19b3777c3f14b7;hb=0364f8f54b009e9e5de482d5c9d1cb7efb023141;hp=0000000000000000000000000000000000000000;hpb=7ecf07ff9aacab300f1fb900f1f0f97beb1be139;p=simantics%2Fplatform.git

diff --git a/tests/org.simantics.scl.compiler.tests/src/org/simantics/scl/compiler/tests/scl/InstanceHierarchy.scl b/tests/org.simantics.scl.compiler.tests/src/org/simantics/scl/compiler/tests/scl/InstanceHierarchy.scl
new file mode 100644
index 000000000..1c751f397
--- /dev/null
+++ b/tests/org.simantics.scl.compiler.tests/src/org/simantics/scl/compiler/tests/scl/InstanceHierarchy.scl
@@ -0,0 +1,26 @@
+import "Prelude" hiding (zero, one)
+
+class MyAdditive a where
+    zero :: a
+    
+class (MyAdditive a) => MyRing a where
+    one :: a
+
+instance MyAdditive Integer where
+    zero = 0
+
+instance MyRing Integer where
+    one = 1
+    
+data Poly a = Poly [a]
+
+instance (MyAdditive a) => MyAdditive (Poly a) where
+    zero = Poly []
+
+instance (MyRing a) => MyRing (Poly a) where
+    one = Poly [one]
+    
+main :: Poly Integer
+main = one
+--
+[1]
\ No newline at end of file