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Diffstat (limited to 'testsuite/tests/lib/IO/hIsEOF002.hs')
| -rw-r--r-- | testsuite/tests/lib/IO/hIsEOF002.hs | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/testsuite/tests/lib/IO/hIsEOF002.hs b/testsuite/tests/lib/IO/hIsEOF002.hs new file mode 100644 index 0000000000..26f5abd9a7 --- /dev/null +++ b/testsuite/tests/lib/IO/hIsEOF002.hs @@ -0,0 +1,48 @@ +-- !!! test hIsEOF in various buffering situations + +import System.IO + +main = do + h <- openFile "hIsEOF002.hs" ReadMode + hSetBuffering h NoBuffering + hSeek h SeekFromEnd 0 + hIsEOF h >>= print + hSeek h SeekFromEnd (-1) + hIsEOF h >>= print + hGetChar h >>= print + + hSetBuffering h LineBuffering + hSeek h SeekFromEnd 0 + hIsEOF h >>= print + hSeek h SeekFromEnd (-1) + hIsEOF h >>= print + hGetChar h >>= print + + hSetBuffering h (BlockBuffering (Just 1)) + hSeek h SeekFromEnd 0 + hIsEOF h >>= print + hSeek h SeekFromEnd (-1) + hIsEOF h >>= print + hGetChar h >>= print + + hSetBuffering h (BlockBuffering Nothing) + hSeek h SeekFromEnd 0 + hIsEOF h >>= print + hSeek h SeekFromEnd (-1) + hIsEOF h >>= print + hGetChar h >>= print + hClose h + + h <- openFile "hIsEOF002.out" WriteMode + hPutStrLn h "hello, world" + hClose h + + h <- openFile "hIsEOF002.out" ReadWriteMode + hSetBuffering h NoBuffering + hSeek h SeekFromEnd 0 + hIsEOF h >>= print + hPutChar h 'x' + hIsEOF h >>= print + hSeek h SeekFromEnd (-1) + hIsEOF h >>= print + hGetChar h >>= print |