patch 8.2.1786: various Normal mode commands not fully tested

Problem:    Various Normal mode commands not fully tested.
Solution:   Add more tests. (Yegappan Lakshmanan, closes #7059)

src/testdir/test_visual.vim

@@ -370,14 +370,17 @@ endfunc
 
 func Test_Visual_paragraph_textobject()
   new
-  call setline(1, ['First line.',
-  \                '',
-  \                'Second line.',
-  \                'Third line.',
-  \                'Fourth line.',
-  \                'Fifth line.',
-  \                '',
-  \                'Sixth line.'])
+  let lines =<< trim [END]
+    First line.
+
+    Second line.
+    Third line.
+    Fourth line.
+    Fifth line.
+
+    Sixth line.
+  [END]
+  call setline(1, lines)
 
   " When start and end of visual area are identical, 'ap' or 'ip' select
   " the whole paragraph.
@@ -633,6 +636,20 @@ func Test_characterwise_visual_mode()
   normal Gkvj$d
   call assert_equal(['', 'a', ''], getline(1, '$'))
 
+  " characterwise visual mode: use a count with the visual mode
+  %d _
+  call setline(1, 'one two three')
+  norm! vy5vy
+  call assert_equal('one t', @")
+
+  " characterwise visual mode: use a count with the visual mode from the last
+  " line in the buffer
+  %d _
+  call setline(1, ['one', 'two', 'three', 'four'])
+  norm! vj$y
+  norm! G1vy
+  call assert_equal('four', @")
+
   bwipe!
 endfunc