[tahoe-lafs-trac-stream] [Tahoe-LAFS] #3715: Add integration tests for file get and put variations, especially stdin/stdout

[Tahoe-LAFS]

#3715: Add integration tests for file get and put variations, especially
stdin/stdout
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 Reporter:  itamarst  |          Owner:  itamarst
     Type:  task      |         Status:  new
 Priority:  normal    |      Milestone:  Support Python 3
Component:  unknown   |        Version:  n/a
 Keywords:            |  Launchpad Bug:
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 1. Unicode vs. bytes is one of the harder parts of the port.
 2. Unit testing stdin/stdout interactions is likely to be quite fragile,
 given both quite different semantics on Python 2 and 3, and need to
 emulate things like stdin/stdout.

 As such, integration tests of `tahoe get` and `tahoe put` with (a) binary
 files and (b) stdin/stdout usage seems like a good idea, even with
 nominally good unit test coverage.

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Ticket URL: <https://tahoe-lafs.org/trac/tahoe-lafs/ticket/3715>
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