fix(test_harness): floating results window (#520)

* Resolved invalid escape sequence error caused by Windows backslash in filepaths.

* PlenaryBustedDirectory now works with no path issues, and the PlenaryTestFile keymap now properly tests only the file.

* Refactored test running and floating window logic out into _test_paths and made test_directory only responsible for passing a list of test files to the new _test_paths function. Finally added a test_file function which calls _test_paths with only one path: the current file.

* Update fix to be unique to Windows machines. For some reason, Path:absolute behaves differently on Linux.

lua/plenary/test_harness.lua

@@ -40,9 +40,7 @@ function harness.test_directory_command(command)
   return harness.test_directory(directory, opts)
 end
 
-function harness.test_directory(directory, opts)
-  print "Starting..."
-  directory = directory:gsub("\\", "/")
+local function test_paths(paths, opts)
   local minimal = not opts or not opts.init or opts.minimal or opts.minimal_init
 
   opts = vim.tbl_deep_extend("force", {
@@ -78,10 +76,7 @@ function harness.test_directory(directory, opts)
 
   local outputter = headless and print_output or get_nvim_output(res.job_id)
 
-  local paths = harness._find_files_to_run(directory)
-
   local path_len = #paths
-
   local failure = false
 
   local jobs = vim.tbl_map(function(p)
@@ -183,6 +178,25 @@ function harness.test_directory(directory, opts)
   end
 end
 
+function harness.test_directory(directory, opts)
+  print "Starting..."
+  directory = directory:gsub("\\", "/")
+  local paths = harness._find_files_to_run(directory)
+
+  -- Paths work strangely on Windows, so lets have abs paths
+  if vim.fn.has "win32" == 1 or vim.fn.has "win64" == 1 then
+    paths = vim.tbl_map(function(p)
+      return Path:new(directory, p.filename)
+    end, paths)
+  end
+
+  test_paths(paths, opts)
+end
+
+function harness.test_file(filepath)
+  test_paths { Path:new(filepath) }
+end
+
 function harness._find_files_to_run(directory)
   local finder
   if vim.fn.has "win32" == 1 or vim.fn.has "win64" == 1 then

plugin/plenary.vim

@@ -1,9 +1,9 @@
 
 " Create command for running busted
 command! -nargs=1 -complete=file PlenaryBustedFile
-      \ lua require('plenary.busted').run(vim.fn.expand([[<args>]]))
+      \ lua require('plenary.test_harness').test_file([[<args>]])
 
 command! -nargs=+ -complete=file PlenaryBustedDirectory
       \ lua require('plenary.test_harness').test_directory_command([[<args>]])
 
-nnoremap <Plug>PlenaryTestFile :lua require('plenary.test_harness').test_directory(vim.fn.expand("%:p"))<CR>
+nnoremap <Plug>PlenaryTestFile :lua require('plenary.test_harness').test_file(vim.fn.expand("%:p"))<CR>