patch 8.1.1300: in a terminal 'ballooneval' does not work right awayv8.1.1300

Problem:    In a terminal 'ballooneval' does not work right away.
Solution:   Flush output after drawing the balloon.  Add the <Ignore> key
            code.  Add a test.

1 files changed, 32 insertions, 0 deletions

diff --git a/src/testdir/test_balloon.vim b/src/testdir/test_balloon.vim
new file mode 100644
index 000000000..e5187557a
--- /dev/null
+++ b/src/testdir/test_balloon.vim
@@ -0,0 +1,32 @@
+" Tests for 'balloonevalterm'.
+
+if !has('balloon_eval_term') || has('gui_running')
+  finish
+endif
+
+source screendump.vim
+if !CanRunVimInTerminal()
+  finish
+endif
+
+func Test_balloon_eval_term()
+  call writefile([
+	\ 'call setline(1, ["one one one", "two tXo two", "three three three"])',
+	\ 'set balloonevalterm balloonexpr=MyBalloonExpr() balloondelay=100',
+	\ 'func MyBalloonExpr()',
+	\ ' return "line " . v:beval_lnum . " column " . v:beval_col',
+	\ 'endfun',
+	\ 'redraw',
+	\ 'call test_setmouse(2, 6)',
+	\ 'call feedkeys("\<MouseMove>\<Ignore>", "xt")',
+	\ ], 'XTest_beval')
+
+  " Check that the balloon shows up
+  let buf = RunVimInTerminal('-S XTest_beval', {'rows': 10, 'cols': 50})
+  call term_wait(buf, 100)
+  call VerifyScreenDump(buf, 'Test_balloon_eval_term_01', {})
+
+  " clean up
+  call StopVimInTerminal(buf)
+  call delete('XTest_beval')
+endfunc