legacy tests: migrate test25

src/nvim/testdir/test25.in

@@ -1,31 +0,0 @@
-Test for jumping to a tag with 'hidden' set, with symbolic link in path of tag.
-This only works for Unix, because of the symbolic link.
-
-STARTTEST
-:so small.vim
-:set hidden
-:" Create a link from test25.dir to the current directory.
-:!rm -f test25.dir
-:!ln -s . test25.dir
-:" Create tags.text, with the current directory name inserted.
-/tags line
-:r !pwd
-d$/test
-hP:.w! tags.test
-:" Try jumping to a tag in the current file, but with a path that contains a
-:" symbolic link.  When wrong, this will give the ATTENTION message.  The next
-:" space will then be eaten by hit-return, instead of moving the cursor to 'd'.
-:set tags=tags.test
-G x:.w! test.out
-:!rm -f test25.dir tags.test
-:qa!
-ENDTEST
-
-tags line:
-SECTION_OFF	/test25.dir/test25.in	/^#define  SECTION_OFF  3$/
-
-/*tx.c*/
-#define  SECTION_OFF  3
-#define  NUM_SECTIONS 3
-
-SECTION_OFF

src/nvim/testdir/test25.ok

@@ -1 +0,0 @@
-#efine  SECTION_OFF  3

test/functional/legacy/025_jump_tag_hidden_spec.lua

@@ -0,0 +1,50 @@
+-- Test for jumping to a tag with 'hidden' set, with symbolic link in path of tag.
+-- This only works for Unix, because of the symbolic link.
+
+local helpers = require('test.functional.helpers')
+local clear, feed, insert = helpers.clear, helpers.feed, helpers.insert
+local execute, expect = helpers.execute, helpers.expect
+
+describe('jump to a tag with hidden set', function()
+  setup(clear)
+
+  it('is working', function()
+    insert([[
+      tags line:
+      SECTION_OFF	/test25.dir/Xxx	/^#define  SECTION_OFF  3$/
+
+      /*tx.c*/
+      #define  SECTION_OFF  3
+      #define  NUM_SECTIONS 3
+
+      SECTION_OFF]])
+
+    execute('w! Xxx')
+    execute('set hidden')
+
+    -- Create a link from test25.dir to the current directory.
+    execute('!rm -f test25.dir')
+    execute('!ln -s . test25.dir')
+
+    -- Create tags.text, with the current directory name inserted.
+    execute('/tags line')
+    execute('r !pwd')
+    feed('d$/test<cr>')
+    feed('hP:.w! tags.test<cr>')
+
+    -- Try jumping to a tag in the current file, but with a path that contains a
+    -- symbolic link.  When wrong, this will give the ATTENTION message.  The next
+    -- space will then be eaten by hit-return, instead of moving the cursor to 'd'.
+    execute('set tags=tags.test')
+    feed('G<C-]> x:yank a<cr>')
+    execute('!rm -f Xxx test25.dir tags.test')
+
+    -- Put @a and remove empty line
+    execute('%d')
+    execute('0put a')
+    execute('$d')
+
+    -- Assert buffer contents.
+    expect("#efine  SECTION_OFF  3")
+  end)
+end)