Name cases for scenarios also in vim-svelte-plugin as shared-*, adding
one for multiline tags. test/shared.sh lists shared cases in only one
of the plugins, as a warning in a separate job on GitHub Actions.
Run tests on GitHub Actions with Vim 8.2.0000, the latest Vim, Neovim
0.9.5 and the latest Neovim by rhysd/action-setup-vim. test/run.sh only
uses the editors in $VUE_TEST_EDITORS if set, and fails if none runs.
Clone the syntax plugins for tests at fixed commits, so changes there
don't break tests unexpectedly.
Replace the Travis tests, which used a separate repo and no longer
ran, with tests in this repo. Each case in test/cases is indented as
a whole and should be unchanged, with optional syntax, fold and tag
checks. The cases are from the previous tests, plus script-setup.vue
for <script setup> keywords and a sync check in oneline.vim.
test/run.sh runs the cases with Vim in a pseudo terminal, as syntax in
Ex mode isn't the same, and Neovim headless.