--TEST--
Checks that only plugin dependencies get their autoloading (and specifically files autoloading) rules included.
--RUN--
update
--EXPECT--
Loading composer repositories with package information
Updating dependencies
Lock file operations: 3 installs, 0 updates, 0 removals
  - Locking plugin/a (1.0.0)
  - Locking plugin/b (1.0.0)
  - Locking regular/dep (1.0.0)
Writing lock file
Installing dependencies from lock file (including require-dev)
Package operations: 3 installs, 0 updates, 0 removals
  - Installing regular/dep (1.0.0): Mirroring from deps-pkg
  - Installing plugin/a (1.0.0): Mirroring from plugin-a
regular/dep files autoload initialized
!!PluginAInit
  - Installing plugin/b (1.0.0): Mirroring from plugin-b
!!PluginBInit
Generating autoload files

--EXPECT-EXIT-CODE--
0