multimedia: Parse the exception message to find the exception keyword

Some exception adds more debug info to its message. Checking the
last line doesn't always correct. Have to use a regular expression
to search the keyword one line by one line from the last.

TEST=Ran enterprise_CFM_SessionStress and got the error:
Unhandled Exception: TimeoutException: Timed out while waiting 20s for
IsJavaScriptExpressionTrue. (RPC: cfm_main_screen.enroll_device)
It used to get a wrong error:
Unhandled Exception: Console output:  (RPC: cfm_main_screen.enroll_device)

Change-Id: Ibbd037b1528f0be3b7654d2bdc4febb9c80744af
Commit-Ready: Wai-Hong Tam <>
Tested-by: Wai-Hong Tam <>
Reviewed-by: Denis Tosic <>
(cherry picked from commit 4716d50ef89450be971cf4edfa2ce8f857e4583d)
Reviewed-by: Wai-Hong Tam <>
Commit-Queue: Wai-Hong Tam <>
Trybot-Ready: Wai-Hong Tam <>
1 file changed
tree: 83500b793f634c7356c2a36a7b7021c1452c2a79
  1. apache/
  2. cli/
  3. client/
  4. contrib/
  5. database/
  6. docs/
  7. frontend/
  8. logs/
  9. results/
  10. scheduler/
  11. server/
  12. site_utils/
  13. test_suites/
  14. tko/
  15. utils/
  16. .gitignore
  17. .quickmerge_sentinel
  19. COMMIT-QUEUE.ini
  21. global_config.ini
  24. metadata.chromium
  25. moblab_config.ini
  26. PRESUBMIT.cfg
  28. ssp_deploy_config.json

Autotest: Automated integration testing for Android and Chrome OS Devices

Autotest is a framework for fully automated testing. It was originally designed to test the Linux kernel, and expanded by the Chrome OS team to validate complete system images of Chrome OS and Android.

Autotest is composed of a number of modules that will help you to do stand alone tests or setup a fully automated test grid, depending on what you are up to. A non extensive list of functionality is:

  • A body of code to run tests on the device under test. In this setup, test logic executes on the machine being tested, and results are written to files for later collection from a development machine or lab infrastructure.

  • A body of code to run tests against a remote device under test. In this setup, test logic executes on a development machine or piece of lab infrastructure, and the device under test is controlled remotely via SSH/adb/some combination of the above.

  • Developer tools to execute one or more tests. test_that for Chrome OS and test_droid for Android allow developers to run tests against a device connected to their development machine on their desk. These tools are written so that the same test logic that runs in the lab will run at their desk, reducing the number of configurations under which tests are run.

  • Lab infrastructure to automate the running of tests. This infrastructure is capable of managing and running tests against thousands of devices in various lab environments. This includes code for both synchronous and asynchronous scheduling of tests. Tests are run against this hardware daily to validate every build of Chrome OS.

  • Infrastructure to set up miniature replicas of a full lab. A full lab does entail a certain amount of administrative work which isn't appropriate for a work group interested in automated tests against a small set of devices. Since this scale is common during device bringup, a special setup, called Moblab, allows a natural progressing from desk -> mini lab -> full lab.

Run some autotests

See the guides to test_that and test_droid:

test_droid Basic Usage

test_that Basic Usage

Write some autotests

See the best practices guide, existing tests, and comments in the code.

Autotest Best Practices

Grabbing the latest source

git clone

Hacking and submitting patches

See the coding style guide for guidance on submitting patches.

Coding Style