tests: add case for vim.deprecate

Author: Marc Jakobi

spec/lsp_spec.lua

@@ -6,24 +6,23 @@ describe('LSP client API', function()
       root_dir = vim.fn.tempname(),
     },
   }
+  local notify_once = stub(vim, 'notify_once')
+  local notify = stub(vim, 'notify')
+  local deprecate = stub(vim, 'deprecate')
   -- load RustAnalyzer command
   require('rustaceanvim.lsp')
   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) == 1 then
-    it('Can spin up rust-analyzer.', function()
+    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')
       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')
       assert.stub(lsp_start).called(1)
-      assert.stub(notify_once).called(0)
-      assert.stub(notify).called(0)
       -- FIXME: This might not work in a sandboxed nix build
       -- local ra = require('rustaceanvim.rust_analyzer')
       -- assert(
@@ -33,5 +32,21 @@ describe('LSP client API', function()
       --   'Failed to start the rust-analyzer LSP client'
       -- )
     end)
+    it("doesn't trigger notifications", function()
+      if not pcall(assert.stub(notify_once).called, 0) then
+        -- this will fail, outputting the args
+        assert.stub(notify_once).called_with(nil)
+      end
+      if not pcall(assert.stub(notify).called, 0) then
+        -- this will fail, outputting the args
+        assert.stub(notify).called_with(nil)
+      end
+    end)
+    it("doesn't trigger deprecation warnings", function()
+      if not pcall(assert.stub(deprecate).called, 0) then
+        -- this will fail, outputting the args
+        assert.stub(deprecate).called_with(nil)
+      end
+    end)
   end
 end)