# 1. virtual posting shouldn't affect balance
hledger -f- print
<<<
2009/1/1 x
  (virtual)  100
  a  1
  b
>>>=0
#
# 2. balanced virtual postings should be required to balance (themselves)
hledger -f- print
<<<
2010/1/1 x
  [balanced virtual]  10
  a  1
  b
>>>= !0
#
# 3. balanced virtual postings should be required to balance (themselves)
hledger -f- print
<<<
2010/1/1 x
  [balanced virtual]  10
  [balanced virtual]  -10
  a  1
  b
>>>=0
#
# 4. a virtual posting with implicit amount should be handled correctly
hledger -f- print
<<<
2010/1/1 x
  [a]    10
  [b]
>>>=0
#
# 5. real and balanced virtual postings are balanced separately, and multiple blank virtuals are ok
hledger -f- balance --tree
<<<
2010/1/1 x
  a  1
  b
  [e]  10
  [f]
  (c)
  (d)
>>>
                   1  a
                  -1  b
                  10  e
                 -10  f
--------------------
                   0  
>>>2
>>>=0
