oldtest: port test_prompt_buffer.vim

Included from before v8.2.1588. Required for v8.2.1588.
Many tests use stuff like term_sendkeys() which is N/A, so are skipped.

src/nvim/testdir/test_prompt_buffer.vim

@@ -0,0 +1,159 @@
+" Tests for setting 'buftype' to "prompt"
+
+source check.vim
+" Nvim's channel implementation differs from Vim's
+" CheckFeature channel
+
+source shared.vim
+source screendump.vim
+
+func CanTestPromptBuffer()
+  " We need to use a terminal window to be able to feed keys without leaving
+  " Insert mode.
+  " Nvim's terminal implementation differs from Vim's
+  " CheckFeature terminal
+
+  " TODO: make the tests work on MS-Windows
+  CheckNotMSWindows
+endfunc
+
+func WriteScript(name)
+  call writefile([
+	\ 'func TextEntered(text)',
+	\ '  if a:text == "exit"',
+	\ '    " Reset &modified to allow the buffer to be closed.',
+	\ '    set nomodified',
+	\ '    stopinsert',
+	\ '    close',
+	\ '  else',
+	\ '    " Add the output above the current prompt.',
+	\ '    call append(line("$") - 1, "Command: \"" . a:text . "\"")',
+	\ '    " Reset &modified to allow the buffer to be closed.',
+	\ '    set nomodified',
+	\ '    call timer_start(20, {id -> TimerFunc(a:text)})',
+	\ '  endif',
+	\ 'endfunc',
+	\ '',
+	\ 'func TimerFunc(text)',
+	\ '  " Add the output above the current prompt.',
+	\ '  call append(line("$") - 1, "Result: \"" . a:text . "\"")',
+	\ '  " Reset &modified to allow the buffer to be closed.',
+	\ '  set nomodified',
+	\ 'endfunc',
+	\ '',
+	\ 'call setline(1, "other buffer")',
+	\ 'set nomodified',
+	\ 'new',
+	\ 'set buftype=prompt',
+	\ 'call prompt_setcallback(bufnr(""), function("TextEntered"))',
+	\ 'eval bufnr("")->prompt_setprompt("cmd: ")',
+	\ 'startinsert',
+	\ ], a:name)
+endfunc
+
+func Test_prompt_basic()
+  throw 'skipped: TODO'
+  call CanTestPromptBuffer()
+  let scriptName = 'XpromptscriptBasic'
+  call WriteScript(scriptName)
+
+  let buf = RunVimInTerminal('-S ' . scriptName, {})
+  call WaitForAssert({-> assert_equal('cmd:', term_getline(buf, 1))})
+
+  call term_sendkeys(buf, "hello\<CR>")
+  call WaitForAssert({-> assert_equal('cmd: hello', term_getline(buf, 1))})
+  call WaitForAssert({-> assert_equal('Command: "hello"', term_getline(buf, 2))})
+  call WaitForAssert({-> assert_equal('Result: "hello"', term_getline(buf, 3))})
+
+  call term_sendkeys(buf, "exit\<CR>")
+  call WaitForAssert({-> assert_equal('other buffer', term_getline(buf, 1))})
+
+  call StopVimInTerminal(buf)
+  call delete(scriptName)
+endfunc
+
+func Test_prompt_editing()
+  throw 'skipped: TODO'
+  call CanTestPromptBuffer()
+  let scriptName = 'XpromptscriptEditing'
+  call WriteScript(scriptName)
+
+  let buf = RunVimInTerminal('-S ' . scriptName, {})
+  call WaitForAssert({-> assert_equal('cmd:', term_getline(buf, 1))})
+
+  let bs = "\<BS>"
+  call term_sendkeys(buf, "hello" . bs . bs)
+  call WaitForAssert({-> assert_equal('cmd: hel', term_getline(buf, 1))})
+
+  let left = "\<Left>"
+  call term_sendkeys(buf, left . left . left . bs . '-')
+  call WaitForAssert({-> assert_equal('cmd: -hel', term_getline(buf, 1))})
+
+  let end = "\<End>"
+  call term_sendkeys(buf, end . "x")
+  call WaitForAssert({-> assert_equal('cmd: -helx', term_getline(buf, 1))})
+
+  call term_sendkeys(buf, "\<C-U>exit\<CR>")
+  call WaitForAssert({-> assert_equal('other buffer', term_getline(buf, 1))})
+
+  call StopVimInTerminal(buf)
+  call delete(scriptName)
+endfunc
+
+func Test_prompt_garbage_collect()
+  func MyPromptCallback(x, text)
+    " NOP
+  endfunc
+  func MyPromptInterrupt(x)
+    " NOP
+  endfunc
+
+  new
+  set buftype=prompt
+  " Nvim doesn't support method call syntax yet.
+  " eval bufnr('')->prompt_setcallback(function('MyPromptCallback', [{}]))
+  " eval bufnr('')->prompt_setinterrupt(function('MyPromptInterrupt', [{}]))
+  eval prompt_setcallback(bufnr(''), function('MyPromptCallback', [{}]))
+  eval prompt_setinterrupt(bufnr(''), function('MyPromptInterrupt', [{}]))
+  call test_garbagecollect_now()
+  " Must not crash
+  call feedkeys("\<CR>\<C-C>", 'xt')
+  call assert_true(v:true)
+
+  call assert_fails("call prompt_setcallback(bufnr(), [])", 'E921:')
+  call assert_equal(0, prompt_setcallback({}, ''))
+  call assert_fails("call prompt_setinterrupt(bufnr(), [])", 'E921:')
+  call assert_equal(0, prompt_setinterrupt({}, ''))
+
+  delfunc MyPromptCallback
+  bwipe!
+endfunc
+
+" Test for editing the prompt buffer
+func Test_prompt_buffer_edit()
+  new
+  set buftype=prompt
+  normal! i
+  call assert_beeps('normal! dd')
+  call assert_beeps('normal! ~')
+  call assert_beeps('normal! o')
+  call assert_beeps('normal! O')
+  call assert_beeps('normal! p')
+  call assert_beeps('normal! P')
+  call assert_beeps('normal! u')
+  call assert_beeps('normal! ra')
+  call assert_beeps('normal! s')
+  call assert_beeps('normal! S')
+  call assert_beeps("normal! \<C-A>")
+  call assert_beeps("normal! \<C-X>")
+  " pressing CTRL-W in the prompt buffer should trigger the window commands
+  call assert_equal(1, winnr())
+  " In Nvim, CTRL-W commands aren't usable from insert mode in a prompt buffer
+  " exe "normal A\<C-W>\<C-W>"
+  " call assert_equal(2, winnr())
+  " wincmd w
+  close!
+  call assert_equal(0, prompt_setprompt([], ''))
+endfunc
+
+" vim: shiftwidth=2 sts=2 expandtab