patch 8.1.2020: it is not easy to change the window layout
Problem: It is not easy to change the window layout.
Solution: Add win_splitmove(). (Andy Massimino, closes #4561)
diff --git a/src/testdir/test_window_cmd.vim b/src/testdir/test_window_cmd.vim
index 9bdae2c..ffe8f43 100644
--- a/src/testdir/test_window_cmd.vim
+++ b/src/testdir/test_window_cmd.vim
@@ -857,4 +857,37 @@
bwipe!
endfunc
+func Test_win_splitmove()
+ edit a
+ leftabove split b
+ leftabove vsplit c
+ leftabove split d
+ call assert_equal(0, win_splitmove(winnr(), winnr('l')))
+ call assert_equal(bufname(winbufnr(1)), 'c')
+ call assert_equal(bufname(winbufnr(2)), 'd')
+ call assert_equal(bufname(winbufnr(3)), 'b')
+ call assert_equal(bufname(winbufnr(4)), 'a')
+ call assert_equal(0, win_splitmove(winnr(), winnr('j'), {'vertical': 1}))
+ call assert_equal(0, win_splitmove(winnr(), winnr('j'), {'vertical': 1}))
+ call assert_equal(bufname(winbufnr(1)), 'c')
+ call assert_equal(bufname(winbufnr(2)), 'b')
+ call assert_equal(bufname(winbufnr(3)), 'd')
+ call assert_equal(bufname(winbufnr(4)), 'a')
+ call assert_equal(0, win_splitmove(winnr(), winnr('k'), {'vertical': 1}))
+ call assert_equal(bufname(winbufnr(1)), 'd')
+ call assert_equal(bufname(winbufnr(2)), 'c')
+ call assert_equal(bufname(winbufnr(3)), 'b')
+ call assert_equal(bufname(winbufnr(4)), 'a')
+ call assert_equal(0, win_splitmove(winnr(), winnr('j'), {'rightbelow': v:true}))
+ call assert_equal(bufname(winbufnr(1)), 'c')
+ call assert_equal(bufname(winbufnr(2)), 'b')
+ call assert_equal(bufname(winbufnr(3)), 'a')
+ call assert_equal(bufname(winbufnr(4)), 'd')
+ only | bd
+
+ call assert_fails('call win_splitmove(winnr(), 123)', 'E957:')
+ call assert_fails('call win_splitmove(123, winnr())', 'E957:')
+ call assert_fails('call win_splitmove(winnr(), winnr())', 'E957:')
+endfunc
+
" vim: shiftwidth=2 sts=2 expandtab