1 files changed, 114 insertions, 0 deletions
diff --git a/src/nvim/testdir/test_signs.vim b/src/nvim/testdir/test_signs.vim
index 8b1927e4f0..2b7672f1af 100644
--- a/src/nvim/testdir/test_signs.vim
+++ b/src/nvim/testdir/test_signs.vim
@@ -1742,3 +1742,117 @@ func Test_sign_cursor_position()
   call StopVimInTerminal(buf)
   call delete('XtestSigncolumn')
 endfunc
+
+" Return the 'len' characters in screen starting from (row,col)
+func s:ScreenLine(row, col, len)
+  let s = ''
+  for i in range(a:len)
+    let s .= nr2char(screenchar(a:row, a:col + i))
+  endfor
+  return s
+endfunc
+
+" Test for 'signcolumn' set to 'number'.
+func Test_sign_numcol()
+  new
+  call append(0, "01234")
+  " With 'signcolumn' set to 'number', make sure sign is displayed in the
+  " number column and line number is not displayed.
+  set numberwidth=2
+  set number
+  set signcolumn=number
+  sign define sign1 text==>
+  sign place 10 line=1 name=sign1
+  sign define sign2 text=Ｖ
+  redraw!
+  call assert_equal("=> 01234", s:ScreenLine(1, 1, 8))
+
+  " With 'signcolumn' set to 'number', when there is no sign, make sure line
+  " number is displayed in the number column
+  sign unplace 10
+  redraw!
+  call assert_equal("1 01234", s:ScreenLine(1, 1, 7))
+
+  " Disable number column. Check whether sign is displayed in the sign column
+  set numberwidth=4
+  set nonumber
+  sign place 10 line=1 name=sign1
+  redraw!
+  call assert_equal("=>01234", s:ScreenLine(1, 1, 7))
+
+  " Enable number column. Check whether sign is displayed in the number column
+  set number
+  redraw!
+  call assert_equal(" => 01234", s:ScreenLine(1, 1, 9))
+
+  " Disable sign column. Make sure line number is displayed
+  set signcolumn=no
+  redraw!
+  call assert_equal("  1 01234", s:ScreenLine(1, 1, 9))
+
+  " Enable auto sign column. Make sure both sign and line number are displayed
+  set signcolumn=auto
+  redraw!
+  call assert_equal("=>  1 01234", s:ScreenLine(1, 1, 11))
+
+  " Test displaying signs in the number column with width 1
+  call sign_unplace('*')
+  call append(1, "abcde")
+  call append(2, "01234")
+  " Enable number column with width 1
+  set number numberwidth=1 signcolumn=auto
+  redraw!
+  call assert_equal("3 01234", s:ScreenLine(3, 1, 7))
+  " Place a sign and make sure number column width remains the same
+  sign place 20 line=2 name=sign1
+  redraw!
+  call assert_equal("=>2 abcde", s:ScreenLine(2, 1, 9))
+  call assert_equal("  3 01234", s:ScreenLine(3, 1, 9))
+  " Set 'signcolumn' to 'number', make sure the number column width increases
+  set signcolumn=number
+  redraw!
+  call assert_equal("=> abcde", s:ScreenLine(2, 1, 8))
+  call assert_equal(" 3 01234", s:ScreenLine(3, 1, 8))
+  " Set 'signcolumn' to 'auto', make sure the number column width is 1.
+  set signcolumn=auto
+  redraw!
+  call assert_equal("=>2 abcde", s:ScreenLine(2, 1, 9))
+  call assert_equal("  3 01234", s:ScreenLine(3, 1, 9))
+  " Set 'signcolumn' to 'number', make sure the number column width is 2.
+  set signcolumn=number
+  redraw!
+  call assert_equal("=> abcde", s:ScreenLine(2, 1, 8))
+  call assert_equal(" 3 01234", s:ScreenLine(3, 1, 8))
+  " Disable 'number' column
+  set nonumber
+  redraw!
+  call assert_equal("=>abcde", s:ScreenLine(2, 1, 7))
+  call assert_equal("  01234", s:ScreenLine(3, 1, 7))
+  " Enable 'number' column
+  set number
+  redraw!
+  call assert_equal("=> abcde", s:ScreenLine(2, 1, 8))
+  call assert_equal(" 3 01234", s:ScreenLine(3, 1, 8))
+  " Remove the sign and make sure the width of the number column is 1.
+  call sign_unplace('', {'id' : 20})
+  redraw!
+  call assert_equal("3 01234", s:ScreenLine(3, 1, 7))
+  " When the first sign is placed with 'signcolumn' set to number, verify that
+  " the number column width increases
+  sign place 30 line=1 name=sign1
+  redraw!
+  call assert_equal("=> 01234", s:ScreenLine(1, 1, 8))
+  call assert_equal(" 2 abcde", s:ScreenLine(2, 1, 8))
+  " Add sign with multi-byte text
+  set numberwidth=4
+  sign place 40 line=2 name=sign2
+  redraw!
+  call assert_equal(" => 01234", s:ScreenLine(1, 1, 9))
+  call assert_equal(" Ｖ abcde", s:ScreenLine(2, 1, 9))
+
+  sign unplace * group=*
+  sign undefine sign1
+  set signcolumn&
+  set number&
+  enew!  | close
+endfunc