2ccac8093b
As suggested by @karlklose in https://codereview.chromium.org/513563002/ comments. Improve testing documentation. - add a README - add a description by example of selectors to the "./tools/test.py -h" output - update/add source comments I had a hard time figuring out how to add and run the tests, mostly because I tried to call them "*_test_1.dart" and "*_test_2.dart", but language test files must have names of the form "*_test.dart". So, I added a README summarizing and referencing the relevant docs. R=brianwilkerson@google.com, karlklose@google.com, jwren@google.com BUG= Review URL: https://codereview.chromium.org//521773003 git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@39822 260f80e4-7a28-3924-810f-c04153c831b5