tests: update test file

Makefile

@@ -86,8 +86,8 @@ format:
 test: $(PLENARY_DIR) $(TREESITTER_DIR)
 	@echo "===> Testing:"
 	nvim --headless --clean \
-	-u scripts/minimal.vim \
-	-c "PlenaryBustedDirectory lua/spec/codecompanion { minimal_init = 'scripts/minimal.vim' }"
+	-u scripts/minimal.lua \
+	-c "PlenaryBustedDirectory lua/spec/codecompanion { minimal_init = 'scripts/minimal.lua' }"
 
 $(PLENARY_DIR):
 	git clone --depth=1 $(PLENARY_URL) $(PLENARY_DIR)

scripts/minimal.lua

@@ -0,0 +1,18 @@
+vim.cmd([[let &rtp.=','.getcwd()]])
+
+vim.cmd("set rtp+=./deps/plenary")
+vim.cmd("set rtp+=./deps/treesitter")
+
+local required_parsers = { "lua", "markdown", "markdown_inline", "yaml" }
+local installed_parsers = require("nvim-treesitter.info").installed_parsers()
+local to_install = vim.tbl_filter(function(parser)
+  return not vim.tbl_contains(installed_parsers, parser)
+end, required_parsers)
+
+if #to_install > 0 then
+  -- fixes 'pos_delta >= 0' error - https://github.com/nvim-lua/plenary.nvim/issues/52
+  vim.cmd("set display=lastline")
+  -- make "TSInstall*" available
+  vim.cmd("runtime! plugin/nvim-treesitter.vim")
+  vim.cmd("TSInstallSync " .. table.concat(to_install, " "))
+end