
This should fix https://github.com/flutter/flutter/issues/126178 When we don't pass a `--concurrency` flag to the test package, it uses a default based on the number of cores that are on the machine. However, the web test platform itself serializes all these requests anyway, which can lead to the test package timing out. This is because from the test package's perspective, it has already started the loading process on a number of suites which are simply waiting for other test suites to compile and run. The ones that wait the longest can run up against the test packages 12 minute timeout for loading a given suite, even though they haven't actually started to try to load. Instead, we should always pass `--concurrency=1` to the test package so that it doesn't attempt to start loads concurrently in the first place.
This directory contains tests for specific flutter
commands.
Tests that are self-contained unit tests should go in hermetic/
.
Tests that are more end-to-end, e.g. that involve actually running
subprocesses, should go in permeable/
.
The ../../tool/coverage_tool.dart
script (which is used to collect
coverage for the tool) runs only the tests in the hermetic
directory
when collecting coverage.