Matan Lurey ca6c46441e Move zircon_tests from package:litetest to package:async_helper. (flutter/engine#55149)
The engine has historically used `package:litetest`, a home grown invention that is a wrapper around the Dart SDK.

In https://github.com/flutter/flutter/issues/133569, we've moved over to the heavier weight `package:test`, which has been simplified since first evaluated by the Dart SDK vending the dependencies we need. The last user of `package:litetest` is a single test in the Fuchsia SDK, `zircon_tests`.

This PR migrates the test from `litetest` (which will be deleted) to the Dart SK vendored `async_minittest`. For this simple test case, there is only a 1-line behavioral change (`notEquals(foo)` becomes `!= foo, true`), and it allows us to remove dependencies from the tree.
2024-09-12 21:10:52 +00:00
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