1 files changed, 72 insertions, 0 deletions
diff --git a/src/testdir/test_tabline.vim b/src/testdir/test_tabline.vim
new file mode 100644
index 0000000..383d239
--- /dev/null
+++ b/src/testdir/test_tabline.vim
@@ -0,0 +1,72 @@
+
+source shared.vim
+
+func TablineWithCaughtError()
+  let s:func_in_tabline_called = 1
+  try
+    call eval('unknown expression')
+  catch
+  endtry
+  return ''
+endfunc
+
+func TablineWithError()
+  let s:func_in_tabline_called = 1
+  call eval('unknown expression')
+  return ''
+endfunc
+
+func Test_caught_error_in_tabline()
+  if has('gui')
+    set guioptions-=e
+  endif
+  let showtabline_save = &showtabline
+  set showtabline=2
+  let s:func_in_tabline_called = 0
+  let tabline = '%{TablineWithCaughtError()}'
+  let &tabline = tabline
+  redraw!
+  call assert_true(s:func_in_tabline_called)
+  call assert_equal(tabline, &tabline)
+  set tabline=
+  let &showtabline = showtabline_save
+endfunc
+
+func Test_tabline_will_be_disabled_with_error()
+  if has('gui')
+    set guioptions-=e
+  endif
+  let showtabline_save = &showtabline
+  set showtabline=2
+  let s:func_in_tabline_called = 0
+  let tabline = '%{TablineWithError()}'
+  try
+    let &tabline = tabline
+    redraw!
+  catch
+  endtry
+  call assert_true(s:func_in_tabline_called)
+  call assert_equal('', &tabline)
+  set tabline=
+  let &showtabline = showtabline_save
+endfunc
+
+func Test_redrawtabline()
+  if has('gui')
+    set guioptions-=e
+  endif
+  let showtabline_save = &showtabline
+  set showtabline=2
+  set tabline=%{bufnr('$')}
+  edit Xtabline1
+  edit Xtabline2
+  redraw
+  call assert_match(bufnr('$') . '', Screenline(1))
+  au BufAdd * redrawtabline
+  badd Xtabline3
+  call assert_match(bufnr('$') . '', Screenline(1))
+
+  set tabline=
+  let &showtabline = showtabline_save
+  au! Bufadd
+endfunc