1 files changed, 87 insertions, 1 deletions
diff --git a/test/functional/api/vim_spec.lua b/test/functional/api/vim_spec.lua
index 0e06e48a35..b10076c6da 100644
--- a/test/functional/api/vim_spec.lua
+++ b/test/functional/api/vim_spec.lua
@@ -318,6 +318,10 @@ describe('API', function()
       eq({false, 'Error executing lua: [string "<nvim>"]:1: '..
                  "attempt to call global 'bork' (a nil value)"},
          meth_pcall(meths.execute_lua, 'bork()', {}))
+
+      eq({false, 'Error executing lua: [string "<nvim>"]:1: '..
+                 "did\nthe\nfail"},
+         meth_pcall(meths.execute_lua, 'error("did\\nthe\\nfail")', {}))
     end)
   end)
 
@@ -1273,7 +1277,9 @@ describe('API', function()
           ext_wildmenu = false,
           ext_linegrid = screen._options.ext_linegrid or false,
           ext_multigrid = false,
-          ext_hlstate=false,
+          ext_hlstate = false,
+          ext_termcolors = false,
+          ext_messages = false,
           height = 4,
           rgb = true,
           width = 20,
@@ -1303,4 +1309,84 @@ describe('API', function()
       eq({["ns-1"]=1, ["ns-2"]=2}, meths.get_namespaces())
     end)
   end)
+
+  describe('nvim_create_buf', function()
+    it('works', function()
+      eq({id=2}, meths.create_buf(true, false))
+      eq({id=3}, meths.create_buf(false, false))
+      eq('  1 %a   "[No Name]"                    line 1\n'..
+         '  2      "[No Name]"                    line 0',
+         meths.command_output("ls"))
+      -- current buffer didn't change
+      eq({id=1}, meths.get_current_buf())
+
+      local screen = Screen.new(20, 4)
+      screen:attach()
+      meths.buf_set_lines(2, 0, -1, true, {"some text"})
+      meths.set_current_buf(2)
+      screen:expect([[
+        ^some text           |
+        {1:~                   }|
+        {1:~                   }|
+                            |
+      ]], {
+        [1] = {bold = true, foreground = Screen.colors.Blue1},
+      })
+    end)
+
+    it('can change buftype before visiting', function()
+      meths.set_option("hidden", false)
+      eq({id=2}, meths.create_buf(true, false))
+      meths.buf_set_option(2, "buftype", "nofile")
+      meths.buf_set_lines(2, 0, -1, true, {"test text"})
+      command("split | buffer 2")
+      eq({id=2}, meths.get_current_buf())
+      -- if the buf_set_option("buftype") didn't work, this would error out.
+      command("close")
+      eq({id=1}, meths.get_current_buf())
+    end)
+
+    it('|scratch-buffer|', function()
+      eq({id=2}, meths.create_buf(false, true))
+      eq({id=3}, meths.create_buf(true, true))
+      eq({id=4}, meths.create_buf(true, true))
+      local scratch_bufs = { 2, 3, 4 }
+      eq('  1 %a   "[No Name]"                    line 1\n'..
+         '  3      "[Scratch]"                    line 0\n'..
+         '  4      "[Scratch]"                    line 0',
+         meths.command_output("ls"))
+      -- current buffer didn't change
+      eq({id=1}, meths.get_current_buf())
+
+      local screen = Screen.new(20, 4)
+      screen:attach()
+
+      --
+      -- Editing a scratch-buffer does NOT change its properties.
+      --
+      local edited_buf = 2
+      meths.buf_set_lines(edited_buf, 0, -1, true, {"some text"})
+      for _,b in ipairs(scratch_bufs) do
+        eq('nofile', meths.buf_get_option(b, 'buftype'))
+        eq('hide', meths.buf_get_option(b, 'bufhidden'))
+        eq(false, meths.buf_get_option(b, 'swapfile'))
+      end
+
+      --
+      -- Visiting a scratch-buffer DOES change its properties.
+      --
+      meths.set_current_buf(edited_buf)
+      screen:expect([[
+        ^some text           |
+        {1:~                   }|
+        {1:~                   }|
+                            |
+      ]], {
+        [1] = {bold = true, foreground = Screen.colors.Blue1},
+      })
+      eq('', meths.buf_get_option(edited_buf, 'buftype'))
+      eq('', meths.buf_get_option(edited_buf, 'bufhidden'))
+      eq(false, meths.buf_get_option(edited_buf, 'swapfile'))
+    end)
+  end)
 end)