lean4-htt/tests/lean/run/getline_crash.lean
Leonardo de Moura d9273786c7 chore: remove when and «unless»
They are obsolete.

cc @Kha
2021-03-20 18:52:18 -07:00

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def tstGetLine (str : String) : IO Unit := do
let path := "tmp_file";
IO.FS.withFile path IO.FS.Mode.write $ λ (h : IO.FS.Handle) =>
h.putStrLn str;
IO.FS.withFile path IO.FS.Mode.read $ λ (h : IO.FS.Handle) => do
let str' ← h.getLine;
IO.println str.length;
IO.println str'.length;
IO.print str';
unless (str'.length == str.length + 1) do
throw (IO.userError ("unexpected length: " ++ toString str'.trim.length));
unless (str'.trim == str) do
throw (IO.userError ("unexpected result: " ++ str'))
def tstGetLine2 (str1 str2 : String) : IO Unit := do
let path := "tmp_file";
IO.FS.withFile path IO.FS.Mode.write $ λ (h : IO.FS.Handle) => do {
h.putStrLn str1; h.putStr str2
};
IO.FS.withFile path IO.FS.Mode.read $ λ (h : IO.FS.Handle) => do
let str1' ← h.getLine;
let str2' ← h.getLine;
unless (str1'.length == str1.length + 1) do
throw (IO.userError ("unexpected length: " ++ toString str1'.trim.length));
unless (str1'.trim == str1) do
throw (IO.userError ("unexpected result: " ++ str1'));
unless (str2'.length == str2.length) do
throw (IO.userError ("unexpected length: " ++ toString str2'.trim.length));
unless (str2'.trim == str2) do
throw (IO.userError ("unexpected result: " ++ str2'))
def tstGetLine3 (str : String) : IO Unit := do
let path := "tmp_file";
IO.FS.withFile path IO.FS.Mode.write $ λ (h : IO.FS.Handle) => do {
h.putStrLn str
};
IO.FS.withFile path IO.FS.Mode.read $ λ (h : IO.FS.Handle) => do
(h.getLine >>= IO.println);
(h.getLine >>= IO.println);
(h.getLine >>= IO.println);
IO.print "done";
pure ()
#eval tstGetLine3 "abc"
#eval tstGetLine ("".pushn 'α' 40)
#eval tstGetLine "a"
#eval tstGetLine ""
#eval tstGetLine ("".pushn 'α' 20)
#eval tstGetLine ("".pushn 'a' 61)
#eval tstGetLine ("".pushn 'α' 61)
#eval tstGetLine ("".pushn 'a' 62)
#eval tstGetLine ("".pushn 'a' 63)
#eval tstGetLine ("".pushn 'a' 64)
#eval tstGetLine ("".pushn 'a' 65)
#eval tstGetLine ("".pushn 'a' 66)
#eval tstGetLine ("".pushn 'a' 128)
#eval tstGetLine2 ("".pushn 'α' 20) ("".pushn 'β' 20)
#eval tstGetLine2 ("".pushn 'α' 40) ("".pushn 'β' 40)
#eval tstGetLine2 ("".pushn 'a' 61) ("".pushn 'b' 61)
#eval tstGetLine2 ("".pushn 'a' 61) ("".pushn 'b' 62)