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TESTING.md

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AI Platform testing

This repository uses a Google service Kokoro for CI testing. The following guide covers how to modify existing tests, and write new tests.

Running Tests

All presubmits will automatically be run on all pull requests which are made by a repository administrator, or have the label kokoro:run.

For Ubuntu for example a presubmit will then chain together the following scripts:

  1. .kokoro/tests/run_tests.sh will exit if there are no changes in ${CMLE_TEST_BASE_DIR}, otherwise it will run
  2. .kokoro/tests/ which performs setup common to our examples, and then runs the test specified by ${CMLE_TEST_SCRIPT} which is specified in the build config file defining the test.

Tests past if the script chain exits with status 0.

Getting Logs Access

Logs are provided through Stackdriver logging and the Cloud Console. Frequent contributors or contributors of complex examples may want to get Log access for the project cloudml-samples-testbed which will allow them to follow through on the links.

Modifying Existing Tests

As specified above, tests will have a corresponding scripts which they run. Simply modify these scripts in a pull request, and they will be run. We welcome external contributions which add or fix tests.

Adding a new test environment

NOTE: this must be done by a Googler.

Adding a new Presubmit

In this repository, in .kokoro/, add a Kokoro folder and build config file. At the very minimum your config file must provide 3 environment variables:

  • CMLE_TEST_DIR the desired working directory for your test. Note the test will only be run if there are changes relevant to this working directory.
  • CMLE_TEST_SCRIPT the testing script to run if changes relevant to your directory have been made.

You can see .kokoro/census/common.cfg for an example of such a file.

In Google3 you must add a corresponding job config in //google3/devtools/kokoro/config/prod/cloud-devrel/cloudml-samples/ with the subdirectory and name matching your build config.

You can use //google3/devtools/kokoro/config/prod/cloud-devrel/cloudml-samples/samples/census/common.cfg as a template, and should only need to modify build_config_dir which will determine how your test is named in the Github UI.