Split the monolithic GeneratedTests target (242 test classes) into 10
sharded targets with ~25 tests each to enable parallel test execution.
Reduces test time from 85.4s to 36.7s (57% improvement) by running
shards concurrently. Most shards finish in 2-8s with 2 outliers at
30-37s.
The implementation automatically scales with new rules and provides
parallel test execution with improved code maintainability.
Tasks we perform with Sourcery are rather simple and can be replaced
with a basic collection of files and the generation of lists in the
new `swiftlint-dev` command. This spares contributors from installing
either Sourcery or Bazel.
Start with a command that generates a template for a new SwiftSyntax
rule. This tool could remain separate or be merged into the official
binary under a `dev` sub-command at a later point in time.
Danny Mösch
JP Simard