hledger/tests/precision.test

# http://code.google.com/p/hledger/issues/detail?id=23
#
# with explicit price:
# prices' commodities are unobserved, so $'s display precision here should be 2 not 4
bin/hledger -f - print --cost
<<<
2010/1/1
   a  $0.00
   a  1C @ $1.0049
   a
>>>
2010/01/01 
    a             0
    a         $1.00
    a        $-1.00

# and here the price should be printed with its original precision, not
# the canonical display precision
bin/hledger -f - print
<<<
2010/1/1
   a  $0.00
   a  1C @ $1.0049
   a
>>>
2010/01/01 
    a             0
    a  1C @ $1.0049
    a  -1C @ $1.0049

# with $'s display precision at 3 or more, this txn should not balance.
# The error message shows the difference with full precision.
bin/hledger -f - balance --no-total --cost --empty
<<<
2010/1/1
   a  1C @ $1.0049
   a  $-1.000
>>>2 /off by \$0.0049/
>>>= 1
# with $'s display precision at 2 or less, this txn should balance
bin/hledger -f - balance --no-total --cost --empty
<<<
2010/1/1
   a  1C @ $1.0049
   a  $-1.00
>>>
               $0.00  a