Using 'flavors' to run the best tests for an environment

Capturing test reports and selecting tests to run in multiple environments (e.g. browser tests, mobile tests, etc.)

This page relates to Recording test results with the Launchable CLI.

Lots of teams run the same tests across several different environments. For example, a UI test suite might be run in several browsers in parallel. Or perhaps you need to build a slightly different version of a mobile app for different locales and need to run the same tests across all of them.

In these scenarios, a test result is not just a test result: it is the combination of the test and the environment that it was run in. A test might pass in one environment but fail in another.

Launchable supports these scenarios with a concept called flavors.

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When you submit test results using launchable record tests, you can submit additional metadata in the form of key-value pairs using the --flavor option.

For example:

# run tests in Chrome and report results
cypress run --reporter junit --reporter-options "mochaFile=report/test-output-chrome.xml"


launchable record tests --build [BUILD NAME] --flavor browser=chrome cypress report/test-output-chrome.xml


# run tests in Firefox and report results
cypress run --reporter junit --reporter-options "mochaFile=report/test-output-firefox.xml"


launchable record tests --build [BUILD NAME] --flavor browser=firefox cypress report/test-output-firefox.xml

And so on. (You can submit multiple key-value pairs, too: --flavor key=value --flavor key2=value2)

Later, when you want to request a subset of tests, you can include the same key-value pairs to get a subset of tests specifically selected for that flavor.

For example:

# get a subset for Chrome, run it, then report results
find ./cypress/integration | launchable subset --build [BUILD NAME] --confidence 90% --flavor browser=chrome cypress > subset-chrome.txt


cypress run --spec "$(cat subset-chrome.txt)" --reporter junit --reporter-options "mochaFile=report/test-output-chrome.xml"


launchable record tests --build [BUILD NAME] --flavor browser=chrome cypress report/test-output-chrome.xml


# get a subset for Firefox, run it, then report results
find ./cypress/integration | launchable subset --build [BUILD NAME] --confidence 90% --flavor browser=firefox cypress > subset-firefox.txt


cypress run --spec "$(cat subset-firefox.txt)" --reporter junit --reporter-options "mochaFile=report/test-output-firefox.xml"


launchable record tests --build [BUILD NAME] --flavor browser=firefox cypress report/test-output-firefox.xml

This feature lets you select the right tests to run based on the changes being tested and the environment they are being run in.

Note: if your workflow involves creating a session externally using launchable record session, you should set --flavor in that command (instead of launchable subset or launchable record tests, as they will be ignored), such as:

launchable record session --build [BUILD NAME] --flavor browser=chrome > session.txt


find ./cypress/integration | launchable subset --session $(cat session.txt) --confidence 90% cypress > subset-chrome.txt


cypress run --spec "$(cat subset-chrome.txt)" --reporter junit --reporter-options "mochaFile=report/test-output-chrome.xml"


launchable record tests --session $(cat session.txt) cypress report/test-output-chrome.xml

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