vim-patch:9.1.0079: LineNrAbove/Below highlighting wrong on wrapped lines (#27363)

Problem:  LineNrAbove and LineNrBelow background wrong on wrapped lines.
Solution: Update number column also for wrapped part of a line.
          (zeertzjq)

closes: vim/vim#13974

https://github.com/vim/vim/commit/ebfd856cfdf6ea0b16c8d115000961c998ce97da

Cherry-pick test_number.vim changes from patch 9.0.0626.

1 files changed, 32 insertions, 6 deletions

diff --git a/test/old/testdir/test_number.vim b/test/old/testdir/test_number.vim
index 1232db80c5..6ac3c4cfe4 100644
--- a/test/old/testdir/test_number.vim
+++ b/test/old/testdir/test_number.vim
@@ -276,11 +276,9 @@ func Test_relativenumber_colors()
     set number relativenumber
     hi LineNr ctermfg=red
   [CODE]
-  call writefile(lines, 'XTest_relnr')
+  call writefile(lines, 'XTest_relnr', 'D')
 
-  " Check that the balloon shows up after a mouse move
   let buf = RunVimInTerminal('-S XTest_relnr', {'rows': 10, 'cols': 50})
-  call TermWait(buf, 50)
   " Default colors
   call VerifyScreenDump(buf, 'Test_relnr_colors_1', {})
 
@@ -295,7 +293,36 @@ func Test_relativenumber_colors()
 
   " clean up
   call StopVimInTerminal(buf)
-  call delete('XTest_relnr')
+endfunc
+
+func Test_relativenumber_colors_wrapped()
+  CheckScreendump
+
+  let lines =<< trim [CODE]
+    set display=lastline scrolloff=0
+    call setline(1, range(200)->map('v:val->string()->repeat(40)'))
+    111
+    set number relativenumber
+    hi LineNr ctermbg=red ctermfg=black
+    hi LineNrAbove ctermbg=blue ctermfg=black
+    hi LineNrBelow ctermbg=green ctermfg=black
+  [CODE]
+  call writefile(lines, 'XTest_relnr_wrap', 'D')
+
+  let buf = RunVimInTerminal('-S XTest_relnr_wrap', {'rows': 20, 'cols': 50})
+
+  call VerifyScreenDump(buf, 'Test_relnr_colors_wrapped_1', {})
+  call term_sendkeys(buf, "k")
+  call VerifyScreenDump(buf, 'Test_relnr_colors_wrapped_2', {})
+  call term_sendkeys(buf, "2j")
+  call VerifyScreenDump(buf, 'Test_relnr_colors_wrapped_3', {})
+  call term_sendkeys(buf, "2j")
+  call VerifyScreenDump(buf, 'Test_relnr_colors_wrapped_4', {})
+  call term_sendkeys(buf, "k")
+  call VerifyScreenDump(buf, 'Test_relnr_colors_wrapped_5', {})
+
+  " clean up
+  call StopVimInTerminal(buf)
 endfunc
 
 func Test_relativenumber_callback()
@@ -313,14 +340,13 @@ func Test_relativenumber_callback()
 
       call timer_start(300, 'Func')
   END
-  call writefile(lines, 'Xrnu_timer')
+  call writefile(lines, 'Xrnu_timer', 'D')
 
   let buf = RunVimInTerminal('-S Xrnu_timer', #{rows: 8})
   call TermWait(buf, 310)
   call VerifyScreenDump(buf, 'Test_relativenumber_callback_1', {})
 
   call StopVimInTerminal(buf)
-  call delete('Xrnu_timer')
 endfunc
 
 " Test for displaying line numbers with 'rightleft'