ci: Add directory filter for IT

[pawelpasterz]

Fixes #1337

This PR adds step for IT workflow. It checks with git diff if any modified/removed/created/moved files were in test_runner and/or integration_tests directory.

Test Plan

How do we know the code works?

No straightforward way to do this. The added step is a simple bash script that sets output either to true or false.
To verify you can copy the script and run locally

git diff --name-only --diff-filter=AMDR HEAD^ HEAD > diffs.txt
echo "---------------"
cat diffs.txt
echo "---------------"
SHOULD_RUN='false'
while IFS= read -r file
do
  if [[ $file == test_runner/* ]] || [[ $file == integration_tests/* ]]; then
    SHOULD_RUN='true'
    break
  fi
done < diffs.txt
rm diffs.txt
echo "Should run IT: ${SHOULD_RUN}"
echo "::set-output name=should_run::${SHOULD_RUN}"

If case there are any files changed in test_runner/integration_tests echo "::set-output name=should_run::true" should be printed. Otherwise echo "::set-output name=should_run::false"

[github-actions]

Timestamp: 2020-11-24 11:51:54
Buildscan url for ubuntu-workflow run 380972400
https://gradle.com/s/obdn3tiplc5ym

[jan-goral]

I have tested it locally using:

#!/bin/bash

git diff --name-only --diff-filter=AMDR HEAD^ HEAD > diffs.txt
echo "---------------"
cat diffs.txt
echo "---------------"
SHOULD_RUN='false'
while IFS= read -r file
do
  if [[ $file == test_runner/* ]] || [[ $file == integration_tests/* ]]; then
    SHOULD_RUN='true'
    break
  fi
done < diffs.txt
rm diffs.txt
echo "::set-output name=should_run::$SHOULD_RUN"

running on a 1313-add-it-test-cases 78eeed3:

MacBook-Pro-jan-gogo:flank-review jan-gogo$ ./testscr.sh 
---------------
integration_tests/src/test/kotlin/integration/AllTestFilteredIT.kt
integration_tests/src/test/kotlin/integration/IgnoreFailedIT.kt
integration_tests/src/test/kotlin/integration/IntergrationTestsUtils.kt
integration_tests/src/test/kotlin/integration/MultipleApksIT.kt
integration_tests/src/test/kotlin/integration/MultipleDevicesIT.kt
integration_tests/src/test/kotlin/integration/RunTimeoutIT.kt
integration_tests/src/test/kotlin/integration/SanityRoboIT.kt
integration_tests/src/test/kotlin/integration/TestFilteringIT.kt
---------------
::set-output name=should_run::true

running on master 8e3bc14:

MacBook-Pro-jan-gogo:flank-review jan-gogo$ ./testscr.sh 
---------------
buildSrc/src/main/kotlin/Versions.kt
---------------
::set-output name=should_run::false

Look like the bash script works fine 👍

[codecov-io]

Codecov Report

Merging #1344 (7c490ed) into master (130e468) will decrease coverage by 0.04%.
The diff coverage is n/a.

@@             Coverage Diff              @@
##             master    #1344      +/-   ##
============================================
- Coverage     77.83%   77.79%   -0.05%     
  Complexity      705      705              
============================================
  Files           244      244              
  Lines          4692     4692              
  Branches        901      901              
============================================
- Hits           3652     3650       -2     
  Misses          550      550              
- Partials        490      492       +2     

[adamfilipow92]

First I try to use this script on 1313-add-it-test-cases
Output

---------------
integration_tests/src/test/kotlin/integration/MultipleDevicesIT.kt
---------------
Should run IT: true
::set-output name=should_run::true

and on master:

---------------
.github/workflows/release.yml
flank-actions/sendMessage.kts
---------------
Should run IT: false
::set-output name=should_run::false

I think script works fine! 👍