vim-patch:8.1.1888: more functions can be used as methods

Problem:    More functions can be used as methods.
Solution:   Make various functions usable as a method.
https://github.com/vim/vim/commit/073e4b92e613d22ce7b16e0fbf5c0e40cb5f9b2c

test_popup.vim already has the changes from this patch (they're N/A
anyway).

4 files changed, 10 insertions, 6 deletions

diff --git a/src/nvim/testdir/test_arglist.vim b/src/nvim/testdir/test_arglist.vim
index a1ef8325ec..01d8f32893 100644
--- a/src/nvim/testdir/test_arglist.vim
+++ b/src/nvim/testdir/test_arglist.vim
@@ -90,8 +90,8 @@ func Test_argadd_empty_curbuf()
   call assert_equal('', bufname('%'))
   call assert_equal(1, line('$'))
   rew
-  call assert_notequal(curbuf, bufnr('%'))
-  call assert_equal('Xargadd', bufname('%'))
+  call assert_notequal(curbuf, '%'->bufnr())
+  call assert_equal('Xargadd', '%'->bufname())
   call assert_equal(2, line('$'))
 
   %argd
diff --git a/src/nvim/testdir/test_functions.vim b/src/nvim/testdir/test_functions.vim
index 2493cc2e27..1c56e936a8 100644
--- a/src/nvim/testdir/test_functions.vim
+++ b/src/nvim/testdir/test_functions.vim
@@ -1414,12 +1414,12 @@ func Test_bufadd_bufload()
 
   let curbuf = bufnr('')
   call writefile(['some', 'text'], 'XotherName')
-  let buf = bufadd('XotherName')
+  let buf = 'XotherName'->bufadd()
   call assert_notequal(0, buf)
-  call assert_equal(1, bufexists('XotherName'))
+  eval 'XotherName'->bufexists()->assert_equal(1)
   call assert_equal(0, getbufvar(buf, '&buflisted'))
   call assert_equal(0, bufloaded(buf))
-  call bufload(buf)
+  eval buf->bufload()
   call assert_equal(1, bufloaded(buf))
   call assert_equal(['some', 'text'], getbufline(buf, 1, '$'))
   call assert_equal(curbuf, bufnr(''))
diff --git a/src/nvim/testdir/test_hide.vim b/src/nvim/testdir/test_hide.vim
index 128b8ff945..41b1a4ad7c 100644
--- a/src/nvim/testdir/test_hide.vim
+++ b/src/nvim/testdir/test_hide.vim
@@ -37,7 +37,7 @@ function Test_hide()
   " :hide as a command
   hide
   call assert_equal([orig_bname, orig_winnr], [bufname(''), winnr('$')])
-  call assert_equal([1, 1], [buflisted('Xf1'), bufloaded('Xf1')])
+  call assert_equal([1, 1], ['Xf1'->buflisted(), 'Xf1'->bufloaded()])
   bwipeout! Xf1
 
   new Xf1
diff --git a/src/nvim/testdir/test_vimscript.vim b/src/nvim/testdir/test_vimscript.vim
index 5922660ef9..d5837e88c9 100644
--- a/src/nvim/testdir/test_vimscript.vim
+++ b/src/nvim/testdir/test_vimscript.vim
@@ -1372,6 +1372,7 @@ func Test_bitwise_functions()
     " and
     call assert_equal(127, and(127, 127))
     call assert_equal(16, and(127, 16))
+    eval 127->and(16)->assert_equal(16)
     call assert_equal(0, and(127, 128))
     call assert_fails("call and(1.0, 1)", 'E805:')
     call assert_fails("call and([], 1)", 'E745:')
@@ -1382,6 +1383,7 @@ func Test_bitwise_functions()
     " or
     call assert_equal(23, or(16, 7))
     call assert_equal(15, or(8, 7))
+    eval 8->or(7)->assert_equal(15)
     call assert_equal(123, or(0, 123))
     call assert_fails("call or(1.0, 1)", 'E805:')
     call assert_fails("call or([], 1)", 'E745:')
@@ -1392,6 +1394,7 @@ func Test_bitwise_functions()
     " xor
     call assert_equal(0, xor(127, 127))
     call assert_equal(111, xor(127, 16))
+    eval 127->xor(16)->assert_equal(111)
     call assert_equal(255, xor(127, 128))
     call assert_fails("call xor(1.0, 1)", 'E805:')
     call assert_fails("call xor([], 1)", 'E745:')
@@ -1401,6 +1404,7 @@ func Test_bitwise_functions()
     call assert_fails("call xor(1, {})", 'E728:')
     " invert
     call assert_equal(65408, and(invert(127), 65535))
+    eval 127->invert()->and(65535)->assert_equal(65408)
     call assert_equal(65519, and(invert(16), 65535))
     call assert_equal(65407, and(invert(128), 65535))
     call assert_fails("call invert(1.0)", 'E805:')