patch 8.2.0655: search code not sufficiently tested

Problem:    Search code not sufficiently tested.
Solution:   Add more tests. (Yegappan Lakshmanan, closes #5999)
diff --git a/src/testdir/test_visual.vim b/src/testdir/test_visual.vim
index 143b140..87cf2a7 100644
--- a/src/testdir/test_visual.vim
+++ b/src/testdir/test_visual.vim
@@ -890,4 +890,27 @@
   close!
 endfunc
 
+" Test for visually selecting an inner block (iB)
+func Test_visual_inner_block()
+  new
+  call setline(1, ['one', '{', 'two', '{', 'three', '}', 'four', '}', 'five'])
+  call cursor(5, 1)
+  " visually select all the lines in the block and then execute iB
+  call feedkeys("ViB\<C-C>", 'xt')
+  call assert_equal([0, 5, 1, 0], getpos("'<"))
+  call assert_equal([0, 5, 6, 0], getpos("'>"))
+  " visually select two inner blocks
+  call feedkeys("ViBiB\<C-C>", 'xt')
+  call assert_equal([0, 3, 1, 0], getpos("'<"))
+  call assert_equal([0, 7, 5, 0], getpos("'>"))
+  " try to select non-existing inner block
+  call cursor(5, 1)
+  call assert_beeps('normal ViBiBiB')
+  " try to select a unclosed inner block
+  8,9d
+  call cursor(5, 1)
+  call assert_beeps('normal ViBiB')
+  close!
+endfunc
+
 " vim: shiftwidth=2 sts=2 expandtab