vim-patch:8.1.{1524,1544}: tests are silently skipped (#19276)

This is a port of these two patches combined:

vim-patch:8.1.1524: tests are silently skipped

Problem:    Tests are silently skipped.
Solution:   Throw an exception for skipped tests in more places.
https://github.com/vim/vim/commit/b0f94c1ff34d27d33aa9f96204985ea29c2eb0a1

vim-patch:8.1.1544: some balloon tests don't run when they can

Problem:    Some balloon tests don't run when they can.
Solution:   Split GUI balloon tests off into a separate file. (Ozaki Kiichi,
            closes vim/vim#4538)  Change the feature check into a command for
            consistency.
https://github.com/vim/vim/commit/b46fecd3454399f8ebdc5055302e4bfc5a10f98b

Omit test_lua.vim: previous patches are N/A
Omit test_memory_usage.vim: previous patches are N/A
Omit test_textprop.vim: previous patches are N/A
Omit test_winbar.vim: previous patches are N/A
Omit test_termcodes.vim: mostly N/A
Skip Test_mouse_positon() because it uses test_setmouse().
Cannot throw error in a Test_nocatch_ test.
Use latest `CheckFeature clipboard_working` for test_quotestar.vim

1 files changed, 20 insertions, 0 deletions

diff --git a/src/nvim/testdir/test_assert.vim b/src/nvim/testdir/test_assert.vim
index 28c5948142..9d0d5b3e70 100644
--- a/src/nvim/testdir/test_assert.vim
+++ b/src/nvim/testdir/test_assert.vim
@@ -257,6 +257,26 @@ func Test_assert_with_msg()
   call remove(v:errors, 0)
 endfunc
 
+func Test_mouse_position()
+  throw 'Skipped: Nvim does not have test_setmouse()'
+  let save_mouse = &mouse
+  set mouse=a
+  new
+  call setline(1, ['line one', 'line two'])
+  call assert_equal([0, 1, 1, 0], getpos('.'))
+  call test_setmouse(1, 5)
+  call feedkeys("\<LeftMouse>", "xt")
+  call assert_equal([0, 1, 5, 0], getpos('.'))
+  call test_setmouse(2, 20)
+  call feedkeys("\<LeftMouse>", "xt")
+  call assert_equal([0, 2, 8, 0], getpos('.'))
+  call test_setmouse(5, 1)
+  call feedkeys("\<LeftMouse>", "xt")
+  call assert_equal([0, 2, 1, 0], getpos('.'))
+  bwipe!
+  let &mouse = save_mouse
+endfunc
+
 " Must be last.
 func Test_zz_quit_detected()
   " Verify that if a test function ends Vim the test script detects this.