Document correct way to run the tests

[mithro]

I couldn't find anywhere which documented the correct way to run all the tests for the code. At the moment, I've been doing a git cl presubmit

[maruel]

"git cl pr" is what I use too. Each unit test can also executed by itself. Do you advocate to note this in README.md?

[mithro]

Yes, I advocate putting this note in README.md

[mithro]

Another thing to note is that when you run "git cl presubmit" there is no output which says "ran X number of tests which all succeeded" or similar so it isn't necessarily clear that the tests have actually run.

Actually, I have no idea if my ar tests are getting run as part of this or not....

[maruel]

git cl pres -v
will print out more details.
presubmit checks are not meant as a general purpose mechanism to run unit tests, more to do non-executable checks so it should probably be moved over. A simple python script at root could fix this, that's what exists in infra.

[mithro]

Many python projects will use a test runner like nose or py.test but I'm not sure that is the correct solution here.