问题
I develop right now a small flutter app. I think as everyone, I fell in love with the hot reload feature.
So now I'm wondering if there is any possibility to have the same developer experience during unit test. Do have to turn a flag somewhere or is it right know just no possible.
If is not possible, are there any plans to make it possible?
回答1:
I guess what you want is to run the new tests as soon as they changed. But in that case it's not a hot reload. Simply a watcher that detect whenever your sources or your tests have changed and restart them.
Flutter, and the lower layers, don't implement "watch" yet. Although you can achieve a similar effect quite easily using a node packages
npm i -g watch which will install watch globally so that you can use it in as a command line.
and then in your terminal do
watch "flutter test" lib test which will run flutter test everytime something change inside lib and test folders
回答2:
You need to run the unit test as an app to be able to use hot reload.
In IntelliJ you can copy the run configuration for lib/main.dart and then select the file test/my_test.dart in the copy.
There is no support to run single tests from a set of tests in a test file in IntelliJ (don't know other IDEs) when you run a test this way.
In my opinion, if you run it as unit test, hot reload doesn't bring much benefit anyway because execution is very fast.
来源：https://stackoverflow.com/questions/49004259/hot-reload-during-unit-testing