legacy tests: migrate test19

src/nvim/testdir/test19.in

@@ -1,33 +0,0 @@
-Tests for "r<Tab>" with 'smarttab' and 'expandtab' set/not set.
-Also test that dv_ works correctly
-
-STARTTEST
-:so small.vim
-:set smarttab expandtab ts=8 sw=4
-:" make sure that backspace works, no matter what termcap is used
-:set t_kD=x7f t_kb=x08
-/some
-r	:set noexpandtab
-/other
-r	
-:" Test replacing with Tabs and then backspacing to undo it
-0wR			
-:" Test replacing with Tabs
-0wR			
-:" Test that copyindent works with expandtab set
-:set expandtab smartindent copyindent ts=8 sw=8 sts=8
-o{
-x:set nosol
-/Second line/
-fwdv_:?^start?,$w! test.out
-:qa!
-ENDTEST
-
-start text
-		some test text
-test text
-		other test text
-    a cde
-    f ghi
-test text
-  Second line beginning with whitespace

src/nvim/testdir/test19.ok

@@ -1,10 +0,0 @@
-start text
-		    ome test text
-test text
-		    ther test text
-    a cde
-    		hi
-test text
-{
-        x
-  with whitespace

test/functional/legacy/019_smarttab_expandtab_spec.lua

@@ -0,0 +1,56 @@
+-- Tests for "r<Tab>" with 'smarttab' and 'expandtab' set/not set.
+-- Also test that dv_ works correctly
+
+local helpers = require('test.functional.helpers')
+local feed, insert = helpers.feed, helpers.insert
+local clear, execute, expect = helpers.clear, helpers.execute, helpers.expect
+
+describe([[performing "r<Tab>" with 'smarttab' and 'expandtab' set/not set, and "dv_"]], function()
+  setup(clear)
+
+  it('is working', function()
+    insert([[
+      start text
+      		some test text
+      test text
+      		other test text
+          a cde
+          f ghi
+      test text
+        Second line beginning with whitespace]])
+
+    execute('set smarttab expandtab ts=8 sw=4')
+    -- Make sure that backspace works, no matter what termcap is used.
+    execute('set t_kD=x7f t_kb=x08')
+
+    execute('/some')
+    feed('r	')
+    execute('set noexpandtab')
+    execute('/other')
+    feed('r	<cr>')
+    -- Test replacing with Tabs and then backspacing to undo it.
+    feed('0wR			<bs><bs><bs><esc><cr>')
+    -- Test replacing with Tabs.
+    feed('0wR			<esc><cr>')
+    -- Test that copyindent works with expandtab set.
+    execute('set expandtab smartindent copyindent ts=8 sw=8 sts=8')
+    feed('o{<cr>x<esc>')
+    execute('set nosol')
+    execute('/Second line/')
+    -- Test "dv_"
+    feed('fwdv_')
+
+    -- Assert buffer contents.
+    expect([[
+      start text
+      		    ome test text
+      test text
+      		    ther test text
+          a cde
+          		hi
+      test text
+      {
+              x
+        with whitespace]])
+  end)
+end)