test: update travis config, handle errors properly, add TEST_LLNODE_DEBUG #144
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At the moment when a test times out (usually because the expected lldb output does not show up, possible due to an error), there is only a tape timeout message, as is what's happening in our Travis CI build.
This PR checks the timeout and throws an error containing the lldb output for the ease of debugging.
I've tried it on Mac and Linux with v8.9.0 and v6.11.5. I've noticed that the tests are a bit flaky in master, with random timeouts (with this patch on I can see the sent command got swallowed, it's
8 <command>
instead ofv8 <command>
so lldb will error and the test times out). Sometimes there is a ECONNRESET on the pipe. I'll investigate that later.