Simplify test init
mimetype: Simplify test init
Bootstrap in-mem idx storage
Test the in-mem idx storage.
fossology_license: simplify test init.
re-fix mimetype
ctags: simplify test init.
ctags+language: simplify test init.
Simplify tests in swh/indexer/tests/test_metadata.py.
Migrated from D725 (view on Phabricator)