Improved test coverage and fix the implementation of Inject and CoGBK

[forsaken628]

Improved test coverage and fix the implementation of Inject and CoGBK

@lostluck #23272

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[github-actions[bot]]

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[lostluck]

Change causes some of the regression tests to fail

https://ci-beam.apache.org/job/beam_PreCommit_Go_Commit/12491/console

I'm a bit indisposed this week due to a summit at work, but when I get a moment I'll see if I can't find what's going wrong with the expectations. The test is correct and required to pass, so the fix needs to be on the direct runner side too.

github.com/apache/beam/sdks/v2/go/test/regression is the package to run against. It should run automatically against the direct runner for you to iterate against.

You shouldn't need to comment "Retest this please" when you push changes, since the precommits run against the direct runner and are failing as a result.

[codecov[bot]]

Codecov Report

Merging #23307 (d2f4145) into master (2955954) will increase coverage by 0.02%. The diff coverage is 82.60%.

@@            Coverage Diff             @@
##           master   #23307      +/-   ##
==========================================
+ Coverage   73.47%   73.49%   +0.02%     
==========================================
  Files         718      718              
  Lines       95878    95883       +5     
==========================================
+ Hits        70443    70467      +24     
+ Misses      24124    24104      -20     
- Partials     1311     1312       +1     

Flag	Coverage Δ
go	50.96% <82.60%> (+0.07%)	:arrow_up:

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
sdks/go/pkg/beam/runners/direct/gbk.go	83.59% <82.60%> (+11.23%)	:arrow_up:
sdks/go/pkg/beam/runners/direct/direct.go	68.46% <0.00%> (+2.70%)	:arrow_up:

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[lostluck]

Run Go Postcommit

[lostluck]

Run Go Flink ValidatesRunner

[lostluck]

Run Go Spark ValidatesRunner

[lostluck]

Run Go Samza ValidatesRunner

[github-actions[bot]]

Reminder, please take a look at this pr: @damccorm

[lostluck]

Run Go Spark ValidatesRunner

[lostluck]

Run Go Flink ValidatesRunner

[lostluck]

Run Go Postcommit