shada: Add support for dumping and restoring buffer list

1 files changed, 65 insertions, 0 deletions

diff --git a/test/functional/shada/buffers_spec.lua b/test/functional/shada/buffers_spec.lua
new file mode 100644
index 0000000000..97dafa533b
--- /dev/null
+++ b/test/functional/shada/buffers_spec.lua
@@ -0,0 +1,65 @@
+-- ShaDa buffer list saving/reading support
+local helpers = require('test.functional.helpers')
+local nvim, nvim_window, nvim_curwin, nvim_command, nvim_feed, nvim_eval, eq =
+  helpers.nvim, helpers.window, helpers.curwin, helpers.command, helpers.feed,
+  helpers.eval, helpers.eq
+
+local shada_helpers = require('test.functional.shada.helpers')
+local reset, set_additional_cmd, clear =
+  shada_helpers.reset, shada_helpers.set_additional_cmd,
+  shada_helpers.clear
+
+local nvim_current_line = function()
+  return nvim_window('get_cursor', nvim_curwin())[1]
+end
+
+describe('ShaDa support code', function()
+  testfilename = 'Xtestfile-functional-shada-buffers'
+  testfilename_2 = 'Xtestfile-functional-shada-buffers-2'
+  before_each(reset)
+  after_each(clear)
+
+  it('is able to dump and restore buffer list', function()
+    set_additional_cmd('set viminfo+=%')
+    reset()
+    nvim_command('edit ' .. testfilename)
+    nvim_command('edit ' .. testfilename_2)
+    -- nvim_command('redir! > /tmp/vistr | verbose set viminfo? | redir END')
+    -- nvim_command('wviminfo /tmp/foo')
+    nvim_command('qall')
+    reset()
+    -- nvim_command('call writefile([&viminfo], "/tmp/vistr")')
+    eq(3, nvim_eval('bufnr("$")'))
+    eq('', nvim_eval('bufname(1)'))
+    eq(testfilename, nvim_eval('bufname(2)'))
+    eq(testfilename_2, nvim_eval('bufname(3)'))
+  end)
+
+  it('does not restore buffer list without % in &viminfo', function()
+    set_additional_cmd('set viminfo+=%')
+    reset()
+    nvim_command('edit ' .. testfilename)
+    nvim_command('edit ' .. testfilename_2)
+    -- nvim_command('redir! > /tmp/vistr | verbose set viminfo? | redir END')
+    -- nvim_command('wviminfo /tmp/foo')
+    set_additional_cmd('')
+    nvim_command('qall')
+    reset()
+    -- nvim_command('call writefile([&viminfo], "/tmp/vistr")')
+    eq(1, nvim_eval('bufnr("$")'))
+    eq('', nvim_eval('bufname(1)'))
+  end)
+
+  it('does not dump buffer list without % in &viminfo', function()
+    nvim_command('edit ' .. testfilename)
+    nvim_command('edit ' .. testfilename_2)
+    -- nvim_command('redir! > /tmp/vistr | verbose set viminfo? | redir END')
+    -- nvim_command('wviminfo /tmp/foo')
+    set_additional_cmd('set viminfo+=%')
+    nvim_command('qall')
+    reset()
+    -- nvim_command('call writefile([&viminfo], "/tmp/vistr")')
+    eq(1, nvim_eval('bufnr("$")'))
+    eq('', nvim_eval('bufname(1)'))
+  end)
+end)