tests(lsp): tweak

lua/rustaceanvim/compat.lua

@@ -9,4 +9,6 @@ end
 
 M.get_clients = vim.lsp.get_clients or vim.lsp.get_active_clients
 
+M.uv = vim.uv or vim.loop
+
 return M

spec/lsp_spec.lua

@@ -1,4 +1,3 @@
-local uv = vim.uv or vim.loop
 -- load RustAnalyzer command
 require('rustaceanvim.lsp')
 
@@ -7,18 +6,25 @@ describe('LSP client API', function()
   local RustaceanConfig = require('rustaceanvim.config.internal')
   local Types = require('rustaceanvim.types.internal')
   local ra_bin = Types.evaluate(RustaceanConfig.server.cmd)[1]
-  if vim.fn.executable(ra_bin) ~= 0 then
+  if vim.fn.executable(ra_bin) == 1 then
     it('Can spin up rust-analyzer.', function()
       local lsp_start = stub(vim.lsp, 'start')
       local notify_once = stub(vim, 'notify_once')
       local notify = stub(vim, 'notify')
-      vim.cmd.e('test.rs')
+      local bufnr = vim.api.nvim_create_buf(true, false)
+      vim.api.nvim_buf_set_name(bufnr, 'test.rs')
+      vim.bo[bufnr].filetype = 'rust'
+      vim.api.nvim_set_current_buf(bufnr)
       vim.cmd.RustAnalyzer('start')
-      -- TODO: Use something less flaky, e.g. a timeout
-      uv.sleep(5000)
       assert.stub(lsp_start).was_called()
       assert.stub(notify_once).was_not_called()
       assert.stub(notify).was_not_called()
+      -- TODO: Use something less flaky, e.g. a timeout
+      -- local compat = require('rustaceanvim.compat')
+      -- compat.uv.sleep(5000)
+      -- local ra = require('rustaceanvim.rust_analyzer')
+      -- FIXME:
+      -- assert.equals(1, #ra.get_active_rustaceanvim_clients(bufnr))
     end)
   end
 end)