tests: Migrate legacy test argument_count.

src/nvim/testdir/Makefile

@@ -27,7 +27,6 @@ SCRIPTS := test_eval.out                                               \
            test86.out  test87.out  test88.out                          \
            test_listlbr.out                                            \
            test_breakindent.out                                        \
-           test_argument_count.out                                     \
            test_close_count.out                                        \
            test_command_count.out                                      \
 

src/nvim/testdir/test_argument_count.in

@@ -1,46 +0,0 @@
-Tests for :[count]argument! and :[count]argdelete     vim: set ft=vim :
-
-STARTTEST
-:%argd
-:argadd a b c d
-:set hidden
-:let buffers = []
-:augroup TEST
-:au BufEnter * call add(buffers, expand('%:t'))
-:augroup END
-:$argu
-:$-argu
-:-argu
-:1argu
-:+2argu
-:augroup TEST
-:au!
-:augroup END
-:let arglists = []
-:.argd
-:call add(arglists, argv())
-:-argd
-:call add(arglists, argv())
-:$argd
-:call add(arglists, argv())
-:1arga c
-:1arga b
-:$argu
-:$arga x
-:call add(arglists, argv())
-:0arga Y
-:call add(arglists, argv())
-:%argd
-:call add(arglists, argv())
-:arga a b c d e f
-:2,$-argd
-:call add(arglists, argv())
-:e! test.out
-:call append(0, buffers)
-:let lnr = line('$')
-:call append(lnr, map(copy(arglists), 'join(v:val, " ")'))
-:w
-:qa!
-ENDTEST
-
-

src/nvim/testdir/test_argument_count.ok

@@ -1,13 +0,0 @@
-d
-c
-b
-a
-c
-
-a b d
-a d
-a
-a b c x
-Y a b c x
-
-a f

test/functional/legacy/argument_count_spec.lua

@@ -0,0 +1,64 @@
+-- Tests for :[count]argument! and :[count]argdelete
+
+local helpers = require('test.functional.helpers')
+local feed, insert, source = helpers.feed, helpers.insert, helpers.source
+local clear, execute, expect = helpers.clear, helpers.execute, helpers.expect
+
+describe('argument_count', function()
+  setup(clear)
+
+  it('is working', function()
+    execute('%argd')
+    execute('argadd a b c d')
+    execute('set hidden')
+    execute('let buffers = []')
+    execute('augroup TEST')
+    execute([[au BufEnter * call add(buffers, expand('%:t'))]])
+    execute('augroup END')
+    execute('$argu')
+    execute('$-argu')
+    execute('-argu')
+    execute('1argu')
+    execute('+2argu')
+    execute('augroup TEST')
+    execute('au!')
+    execute('augroup END')
+    execute('let arglists = []')
+    execute('.argd')
+    execute('call add(arglists, argv())')
+    execute('-argd')
+    execute('call add(arglists, argv())')
+    execute('$argd')
+    execute('call add(arglists, argv())')
+    execute('1arga c')
+    execute('1arga b')
+    execute('$argu')
+    execute('$arga x')
+    execute('call add(arglists, argv())')
+    execute('0arga Y')
+    execute('call add(arglists, argv())')
+    execute('%argd')
+    execute('call add(arglists, argv())')
+    execute('arga a b c d e f')
+    execute('2,$-argd')
+    execute('call add(arglists, argv())')
+    execute('call append(0, buffers)')
+    execute([[let lnr = line('$')]])
+    execute([[call append(lnr, map(copy(arglists), 'join(v:val, " ")'))]])
+    -- Assert buffer contents.
+    expect([=[
+      d
+      c
+      b
+      a
+      c
+      
+      a b d
+      a d
+      a
+      a b c x
+      Y a b c x
+      
+      a f]=])
+  end)
+end)