Some command tests fail with Highline 1.6.9 under JRuby

[rsutphin]

Three of the CLI specs fail using HighLine 1.6.9 under JRuby 1.6.5. There's a note about switching to JLine in the HL changelog; that might be the culprit. I'm not sure if the issue actually affects the CLI or just the tests.

[rsutphin]

Failures continue on HighLine 1.6.15 with JRuby 1.7.3. There are actually 5 failures with this combination. All of them seem to be related to stdin/stdout/stderr overrides in the test suite.

[rsutphin]

It is related to the use of JLine in HighLine 1.6.9 and later. There are two problems:

1. JLine does not read partial lines. The stdin simulator in the spec suite does not append a trailing newline, so with HighLine/JLine the specs were seeing different input than expected.

2. More seriously, the way JLine was integrated into HighLine does not respect the input and output streams passed into HighLine.new. I have submitted a PR for this (Use the configured streams on JRuby with JLine JEG2/highline#67).

The second one means that this does affect the CLI in real life (it wants to output prompts to standard error, while the hard-coded stream in the JLine integration is standard out), so the solution of locking to a pre-1.6.9 version of HighLine until HighLine is fixed is correct.

[rsutphin]

Closed by #23.

[rsutphin]

Actually, even with the changes outlined in my comments above, there are still several test failures with later highline versions on JRuby.