tests: proof test-stdio.py against buffer fill-up
With the previous code, it could in theory happen that the pipe / PTY buffer of
the child stdout / stderr fills up and the process never finishes.
To prevent that, we read all of the stream before waiting for the end of the
process. To ensure that the stream reaches EOF when the child finishes, we must
close the parent "copy" of the child stdout / stderr.
#require rust
$ rhg() {
> if [ -f "$RUNTESTDIR/../rust/target/debug/rhg" ]; then
> "$RUNTESTDIR/../rust/target/debug/rhg" "$@"
> else
> echo "skipped: Cannot find rhg. Try to run cargo build in rust/rhg."
> exit 80
> fi
> }
$ rhg unimplemented-command
[252]
$ rhg root
abort: no repository found in '$TESTTMP' (.hg not found)!
[255]
$ hg init repository
$ cd repository
$ rhg root
$TESTTMP/repository
$ rhg root > /dev/full
abort: No space left on device (os error 28)
[255]
$ rm -rf `pwd`
$ rhg root
abort: error getting current working directory: $ENOENT$
[255]