Previously we had a few customized Gradle build task to manage
the Docker container for provisioning browser and ChromeDriverService
used by WebDriver tests. This CL changed to use a java library
from testcontainers.org to achieve the same purpose. The main
benefit of it is that we can expect to run the WebDriver tests
from IDE going forward.
Also, this CL refactored the structure of WebDriver related classes
to have JUnit rule to manage the lifecycle of WebDriver instance,
this is also compatible with the API from testcontainers library.
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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=241539861
This CL is to address the public static field in RepeatableRunner
for caller to get the current attempt number. We tried to have
a JUnit TestRule to achieve the purpose but it ended up with having
a RuleChain in each class where we already have multiple rules and
need to add the retry rule. This is because we have to make sure
the retry rule is the last one to wrap the test statement so that
the actual retry can include the actions defined in other rules.
Having a rule chain is not scalable and confuses engineer so we
gave it up.
Instead, we decided to expand the current RepeatableRunner to
use reflection to inject the attempt number to the test class.
Doing it this way can reduce the burden from the caller and it also
gets rid of the global state from the previous public static field.
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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=240789045
This change actually enabled the screenshot comparison in the
visual regression tests. We used Docker to provision Chrome
and ChromeDriver to eliminate the discrepancy of environment
between local development and Travis CI.
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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=237811918
This change added the implementation of screenshot comparison with
ChromeWebDriver which will be used in the open-source code base.
This change also set a default window size(1200x2000) for each screenshot
test. This is to make the size of screenshot deterministic to help
build the screenshot comparison tests.
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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=235539713
