Refactor jobs into a Vim version agnostic API which can be used for other purposes

test/smoke_test.vader

@@ -11,11 +11,12 @@ Before:
     \}]
   endfunction
 
+  " Running the command in another subshell seems to help here.
   call ale#linter#Define('foobar', {
   \ 'name': 'testlinter',
   \ 'callback': 'TestCallback',
   \ 'executable': 'echo',
-  \ 'command': 'echo foo bar',
+  \ 'command': '/bin/sh -c ''echo foo bar''',
   \})
 
 After:

test/test_ale_toggle.vader

@@ -26,7 +26,7 @@ Before:
     \ 'lnum': 2,
     \ 'vcol': 0,
     \ 'col': 3,
-    \ 'text': a:output[0],
+    \ 'text': 'foo bar',
     \ 'type': 'E',
     \ 'nr': -1,
     \}]
@@ -56,7 +56,8 @@ Before:
   \ 'name': 'testlinter',
   \ 'callback': 'ToggleTestCallback',
   \ 'executable': 'echo',
-  \ 'command': 'echo foo bar',
+  \ 'command': 'echo',
+  \ 'read_buffer': 0,
   \})
 
 After:

test/test_command_chain.vader

@@ -1,4 +1,7 @@
 Before:
+  Save &shell, g:ale_run_synchronously
+  let g:ale_run_synchronously = 1
+  set shell=/bin/sh
   let g:linter_output = []
   let g:first_echo_called = 0
   let g:second_echo_called = 0
@@ -39,6 +42,7 @@ Before:
   \})
 
 After:
+  Restore
   unlet! g:first_echo_called
   unlet! g:second_echo_called
   unlet! g:final_callback_called
@@ -55,9 +59,6 @@ Given foobar (Some imaginary filetype):
 Execute(Check the results of running the chain):
   AssertEqual 'foobar', &filetype
   call ale#Lint()
-  " Sleep a little. This allows the commands to complete a little better.
-  sleep 50m
-  call ale#engine#WaitForJobs(2000)
 
   Assert g:first_echo_called, 'The first chain item was not called'
   Assert g:second_echo_called, 'The second chain item was not called'

test/test_history_saving.vader

@@ -44,13 +44,7 @@ Execute(History should be set when commands are run):
 
   AssertEqual 1, len(g:history)
   AssertEqual sort(['status', 'exit_code', 'job_id', 'command']), sort(keys(g:history[0]))
-
-  if has('nvim')
-    AssertEqual 'echo command history test', g:history[0].command
-  else
-    AssertEqual ['/bin/sh', '-c', 'echo command history test'], g:history[0].command
-  endif
-
+  AssertEqual ['/bin/sh', '-c', 'echo command history test'], g:history[0].command
   AssertEqual 'finished', g:history[0].status
   AssertEqual 0, g:history[0].exit_code
   " The Job ID will change each time, but we can check the type.

test/test_line_join.vader

@@ -18,6 +18,6 @@ After:
 Execute (Join the lines):
   let joined_result = []
   for item in g:test_output
-    call ale#engine#JoinNeovimOutput(joined_result, item)
+    call ale#job#JoinNeovimOutput(joined_result, item)
   endfor
   AssertEqual g:expected_result, joined_result

test/test_vim8_processid_parsing.vader

@@ -1,5 +1,5 @@
 Execute(Vim8 Process ID parsing should work):
-  AssertEqual 123, ale#engine#ParseVim8ProcessID('process 123 run')
-  AssertEqual 347, ale#engine#ParseVim8ProcessID('process 347 failed')
-  AssertEqual 789, ale#engine#ParseVim8ProcessID('process 789 dead')
-  AssertEqual 0, ale#engine#ParseVim8ProcessID('no process')
+  AssertEqual 123, ale#job#ParseVim8ProcessID('process 123 run')
+  AssertEqual 347, ale#job#ParseVim8ProcessID('process 347 failed')
+  AssertEqual 789, ale#job#ParseVim8ProcessID('process 789 dead')
+  AssertEqual 0, ale#job#ParseVim8ProcessID('no process')