diff options
author | David Terei <davidterei@gmail.com> | 2011-07-20 11:09:03 -0700 |
---|---|---|
committer | David Terei <davidterei@gmail.com> | 2011-07-20 11:26:35 -0700 |
commit | 16514f272fb42af6e9c7674a9bd6c9dce369231f (patch) | |
tree | e4f332b45fe65e2a7a2451be5674f887b42bf199 /testsuite/tests/lib/IO/openFile007.hs | |
parent | ebd422aed41048476aa61dd4c520d43becd78682 (diff) | |
download | haskell-16514f272fb42af6e9c7674a9bd6c9dce369231f.tar.gz |
Move tests from tests/ghc-regress/* to just tests/*
Diffstat (limited to 'testsuite/tests/lib/IO/openFile007.hs')
-rw-r--r-- | testsuite/tests/lib/IO/openFile007.hs | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/testsuite/tests/lib/IO/openFile007.hs b/testsuite/tests/lib/IO/openFile007.hs new file mode 100644 index 0000000000..e39ed6538f --- /dev/null +++ b/testsuite/tests/lib/IO/openFile007.hs @@ -0,0 +1,18 @@ +-- !!! check that we don't truncate files if the open fails + +import Control.Monad +import System.IO +import System.IO.Error + +tmp = "openFile007.out" + +main = do + h <- openFile tmp WriteMode + hPutStrLn h "hello, world" + + -- second open in write mode better fail, but better not truncate the file + tryIOError (openFile tmp WriteMode) >>= print + + hClose h + s <- readFile tmp -- make sure our "hello, world" is still there + putStr s |