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Task #3366

closed

Make use of vde_switch to test transport behaviors

Added by Alex Afanasyev over 8 years ago. Updated 3 months ago.

Status:
Abandoned
Priority:
Low
Assignee:
-
Category:
Faces
Target version:
-
Start date:
Due date:
% Done:

0%

Estimated time:

Description

vde_switch (part of VDE-2, vde2 package on Ubuntu, vde package in Homebrew) emulates switch/hub, with ability to create TAP interfaces.

For example,

vde_switch -t testTap1 -t testTap2

will create testTap1 and testTap2 interfaces that can be later properly configured. The configuration could be tricky, as it is platform-specific.

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 #1

Updated by Junxiao Shi over 8 years ago

  • Start date deleted (12/21/2015)

The use of TUN/TAP in unit testing is expressly rejected in #3306 note-10.

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 #2

Updated by Alex Afanasyev over 8 years ago

  • Tracker changed from Task to Feature

I forgot about #3306. But we still may keep this issue alive, if we will have serious test issues with multicast udp/ethernet. I understand that this is not a trivial task, but may be beneficial.

If not unit tests, TAP interfaces can be embedded in integrated tests. Specifically, the VLAN issue (#3348) can be tested with vde_switch.

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 #3

Updated by Davide Pesavento over 8 years ago

  • Subject changed from Make use of `vde_switch` to unit-test transport behaviors to Make use of vde_switch to unit-test transport behaviors

Considering we wouldn't use the "distributed" part of VDE, what are the advantages compared to other solutions such as a virtual bridge + a number of veth or tap devices?

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 #4

Updated by Davide Pesavento over 5 years ago

  • Tags set to UnitTests
  • Tracker changed from Feature to Task
  • Category changed from Integration Tests to Faces
  • Priority changed from Normal to Low
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 #5

Updated by Davide Pesavento 6 months ago

  • Tags changed from unit-tests to unit-tests, needs-discussion
  • Description updated (diff)
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 #6

Updated by Davide Pesavento 3 months ago

  • Tags deleted (needs-discussion, unit-tests)
  • Subject changed from Make use of vde_switch to unit-test transport behaviors to Make use of vde_switch to test transport behaviors
  • Status changed from New to Abandoned

Not sure if these tests can still be called "unit" tests if their execution requires a specific environment that must be externally set up.

In any case, I'm tentatively closing this issue and instead suggest that, if we ever implement this, we adopt a VM-based or container-based approach, like Testcontainers for instance.

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