1 files changed, 184 insertions, 0 deletions
diff --git a/testsuite/tests/rebindable/rebindable6.hs b/testsuite/tests/rebindable/rebindable6.hs
new file mode 100644
index 0000000000..74d861cda8
--- /dev/null
+++ b/testsuite/tests/rebindable/rebindable6.hs
@@ -0,0 +1,184 @@
+{-# LANGUAGE RebindableSyntax, NPlusKPatterns, Rank2Types,
+             ScopedTypeVariables, FlexibleInstances #-}
+module Main where
+	{
+--	import Prelude;
+	import qualified Prelude;
+	import Prelude(String,undefined,Maybe(..),IO,putStrLn,
+		Integer,(++),Rational, (==), (>=) );
+
+	debugFunc :: String -> IO a -> IO a;
+	debugFunc s ioa = (putStrLn ("++ " ++ s)) Prelude.>>
+		(ioa Prelude.>>= (\a -> 
+			(putStrLn ("-- " ++ s)) Prelude.>> (Prelude.return a)
+		));
+
+	infixl 1 >>=;
+	infixl 1 >>;
+
+	returnIO :: a -> IO a;
+        returnIO = Prelude.return;
+	
+	class HasReturn a where
+		{
+		return :: a;
+		};
+
+	class HasBind a where
+		{
+		(>>=) :: a;
+		};
+
+	class HasSeq a where
+		{
+		(>>) :: a;
+		};
+
+	class HasFail a where
+		{
+		fail :: a;
+		};
+
+	instance HasReturn (a -> IO a) where
+		{
+		return a = debugFunc "return" (Prelude.return a);
+		};
+
+	instance HasBind (IO a -> (a -> IO b) -> IO b) where
+		{
+		(>>=) ma amb = debugFunc ">>=" ((Prelude.>>=) ma amb);
+		};
+
+	instance HasSeq (IO a -> IO b -> IO b) where
+		{
+		(>>) ma mb = debugFunc ">>" ((Prelude.>>) ma mb);
+		};
+
+	instance HasFail (String -> IO a) where
+		{
+		fail s = debugFunc "fail" (Prelude.return undefined);
+	--	fail s = debugFunc "fail" (Prelude.fail s);
+		};
+
+	class HasFromInteger a where
+		{
+		fromInteger :: a;
+		};
+
+	instance HasFromInteger (Integer -> Integer) where
+		{
+		fromInteger a = a Prelude.+ a Prelude.+ a Prelude.+ a Prelude.+ a; -- five times
+		};
+
+	class HasFromRational a where
+		{
+		fromRational :: a;
+		};
+
+	instance HasFromRational (Rational -> Rational) where
+		{
+		fromRational a = a Prelude.+ a Prelude.+ a; -- three times
+		};
+
+	class HasNegate a where
+		{
+		negate :: a;
+		};
+
+	instance HasNegate (a -> a) where
+		{
+		negate a = a; -- don't actually negate
+		};
+
+	class HasMinus a where
+		{
+		(-) :: a;
+		};
+
+	instance HasMinus (a -> a -> a) where
+		{
+		(-) x y = y; -- changed function
+		};
+
+	test_do :: forall a b. IO a -> IO (Maybe b) -> IO b;
+	test_do f g = do
+		{
+		f;			-- >>
+		Just (b::b) <- g;	-- >>= (and fail if g returns Nothing)
+		return b;		-- return
+		};
+	
+	test_fromInteger :: Integer;
+	test_fromInteger = 27;
+	
+	test_fromRational :: Rational;
+	test_fromRational = 31.5;
+
+	test_negate :: Integer -> Integer;
+	test_negate a = - a;
+
+	test_fromInteger_pattern :: Integer -> String;
+	test_fromInteger_pattern a@1 = "1=" ++ (Prelude.show a);
+	test_fromInteger_pattern a@(-2) = "(-2)=" ++ (Prelude.show a);
+	test_fromInteger_pattern (a + 7) = "(a + 7)=" ++ Prelude.show a;
+
+	test_fromRational_pattern :: Rational -> String;
+	test_fromRational_pattern a@0.5 = "0.5=" ++ (Prelude.show a);
+	test_fromRational_pattern a@(-0.7) = "(-0.7)=" ++ (Prelude.show a);
+	test_fromRational_pattern a = "_=" ++ (Prelude.show a);
+
+
+	doTest :: String -> IO a -> IO ();
+	doTest s ioa = 
+		(putStrLn ("start test " ++ s))
+			Prelude.>>
+		ioa
+			Prelude.>>
+		(putStrLn ("end test " ++ s));
+
+	main :: IO ();
+	main = 
+		(doTest "test_do failure"
+			(test_do (Prelude.return ()) (Prelude.return Nothing))
+		)
+			Prelude.>>
+		(doTest "test_do success"
+			(test_do (Prelude.return ()) (Prelude.return (Just ())))
+		)
+			Prelude.>>
+		(doTest "test_fromInteger"
+			(putStrLn (Prelude.show test_fromInteger))
+		)
+			Prelude.>>
+		(doTest "test_fromRational"
+			(putStrLn (Prelude.show test_fromRational))
+		)
+			Prelude.>>
+		(doTest "test_negate"
+			(putStrLn (Prelude.show (test_negate 3)))
+		)
+			Prelude.>>
+		(doTest "test_fromInteger_pattern 1"
+			(putStrLn (test_fromInteger_pattern 1))
+		)
+			Prelude.>>
+		(doTest "test_fromInteger_pattern (-2)"
+			(putStrLn (test_fromInteger_pattern (-(2::Integer)::Integer)))
+		)
+			Prelude.>>
+		(doTest "test_fromInteger_pattern 9"
+			(putStrLn (test_fromInteger_pattern 9))
+		)
+			Prelude.>>
+		(doTest "test_fromRational_pattern 0.5"
+			(putStrLn (test_fromRational_pattern 0.5))
+		)
+			Prelude.>>
+		(doTest "test_fromRational_pattern (-0.7)"
+			(putStrLn (test_fromRational_pattern (-(0.7::Rational)::Rational)))
+		)
+			Prelude.>>
+		(doTest "test_fromRational_pattern 1.7"
+			(putStrLn (test_fromRational_pattern 1.7))
+		);
+	}