Revert "feat: make tests run in coroutine to support asynchronous testing (#426)"

This reverts commit 1252cb3.

Author: Conni2461

TESTS_README.md

@@ -135,19 +135,3 @@ To test this in your `~/.config/nvim` configuration, try the suggested file stru
 lua/example/module.lua
 lua/spec/example/module_spec.lua
 ```
-
-# Asynchronous testing
-
-Tests run in a coroutine, which can be yielded and resumed. This can be used to
-test code that uses asynchronous Neovim functionalities. For example, this can
-be done inside a test:
-
-```lua
-local co = coroutine.running()
-vim.defer_fn(function()
-  coroutine.resume(co)
-end, 1000)
---The test will reach here immediately.
-coroutine.yield()
---The test will only reach here after one second, when the deferred function runs.
-```

lua/plenary/busted.lua

@@ -218,9 +218,9 @@ mod.run = function(file)
   print("\n" .. HEADER)
   print("Testing: ", file)
 
-  local loaded, msg = loadfile(file)
+  local ok, msg = pcall(dofile, file)
 
-  if not loaded then
+  if not ok then
     print(HEADER)
     print "FAILED TO LOAD FILE"
     print(color_string("red", msg))
@@ -232,37 +232,33 @@ mod.run = function(file)
     end
   end
 
-  coroutine.wrap(function()
-    loaded()
-
-    -- If nothing runs (empty file without top level describe)
-    if not results.pass then
-      if is_headless then
-        return vim.cmd "0cq"
-      else
-        return
-      end
+  -- If nothing runs (empty file without top level describe)
+  if not results.pass then
+    if is_headless then
+      return vim.cmd "0cq"
+    else
+      return
     end
+  end
 
-    mod.format_results(results)
+  mod.format_results(results)
 
-    if #results.errs ~= 0 then
-      print("We had an unexpected error: ", vim.inspect(results.errs), vim.inspect(results))
-      if is_headless then
-        return vim.cmd "2cq"
-      end
-    elseif #results.fail > 0 then
-      print "Tests Failed. Exit: 1"
+  if #results.errs ~= 0 then
+    print("We had an unexpected error: ", vim.inspect(results.errs), vim.inspect(results))
+    if is_headless then
+      return vim.cmd "2cq"
+    end
+  elseif #results.fail > 0 then
+    print "Tests Failed. Exit: 1"
 
-      if is_headless then
-        return vim.cmd "1cq"
-      end
-    else
-      if is_headless then
-        return vim.cmd "0cq"
-      end
+    if is_headless then
+      return vim.cmd "1cq"
     end
-  end)()
+  else
+    if is_headless then
+      return vim.cmd "0cq"
+    end
+  end
 end
 
 return mod