This CL introduces a test runner and test cases under
`pkg/dynamic_modules/test/`. These tests are end-to-end tests that
specifically target the dynamic modules semantics. This includes:
* semantics expecations on the program evolutions (e.g. libraries
defined only once)
* individual cases around the dynamic interface (callable, extensible,
overrides).
We should continue to add more test as we discover coner cases worth validating
(e.g. mixins, constants, etc).
The suite is not yet integrated to the test matrix, my plan is to do so
after we have some initial targets set up.
Change-Id: I2a63946c36d99baacb6fb7edc01c4ef377ce20b6
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/379921
Reviewed-by: Alexander Markov <alexmarkov@google.com>
Commit-Queue: Sigmund Cherem <sigmund@google.com>