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From "ASF GitHub Bot (JIRA)" <>
Subject [jira] [Commented] (BEAM-155) Support asserting the contents of windows and panes in PAssert
Date Fri, 24 Jun 2016 21:55:16 GMT


ASF GitHub Bot commented on BEAM-155:

GitHub user tgroh opened a pull request:

    [BEAM-155] Add Pane matchers to PAssert

    Be sure to do all of the following to help us incorporate your contribution
    quickly and easily:
     - [ ] Make sure the PR title is formatted like:
       `[BEAM-<Jira issue #>] Description of pull request`
     - [ ] Make sure tests pass via `mvn clean verify`. (Even better, enable
           Travis-CI on your fork and ensure the whole test matrix passes).
     - [ ] Replace `<Jira issue #>` in the title with the actual Jira issue
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     - [ ] If this contribution is large, please file an Apache
           [Individual Contributor License Agreement](
    This allows PCollections that have upstream triggers that fire multiple
    times to assert the contents of panes with specific timings, rather than
    restricting the trigger to fire only once.

You can merge this pull request into a Git repository by running:

    $ git pull more_pane_matchers

Alternatively you can review and apply these changes as the patch at:

To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:

    This closes #532


> Support asserting the contents of windows and panes in PAssert
> --------------------------------------------------------------
>                 Key: BEAM-155
>                 URL:
>             Project: Beam
>          Issue Type: Improvement
>          Components: sdk-java-core
>            Reporter: Thomas Groh
>            Assignee: Thomas Groh
> This consists of reifying the output windows and panes, and running asserts per-window
about the contents of panes.
> This includes aggregated matching and final pane matching, e.g.
> PAssert.that(output).byOnTimePane().hasOutputElements(foo, bar);
> // For discarding mode - could have emitted (say) [spam, eggs], [spam], [], [sausage],
> PAssert.that(output).byFinalPane().hasOutputElements(spam, eggs, sausage, spam);
> // For accumulating mode without late data
> PAssert.that(output).finalPane().containsInAnyOrder(spam, eggs, sausage, spam);
> // For accumulating mode with late data
> PAssert.that(output).finalPane().containsInAnyOrder(foo, bar).mayAlsoContain(baz, rab);
> See also:

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