# invalid dates should be rejected
# 1. valid month and day, but flipped
hledger -f- print
<<<
2010/31/12 x
   a  1
   b
>>>2 /bad date/
>>>= 1
# 2. too-large day
hledger -f- print
<<<
2010/12/32 x
   a  1
   b
>>>2 /bad date/
>>>= 1
# 3. 29th feb on leap year should be ok
hledger -f- print
<<<
2000/2/29 x
   a  1
   b
>>>
2000/02/29 x
    a               1
    b

>>>= 0
# 4. 29th feb on non-leap year should fail
hledger -f- print
<<<
2001/2/29 x
   a  1
   b
>>>2 /bad date/
>>>= 1
# 5. dates must be followed by whitespace or newline
hledger -f- print
<<<
2015/9/6*
   a  0
>>>2 /unexpected '*'/
>>>= 1