2019-01-01 * Opening balance
    Assets:Investments              1000.00 EUR
    Equity:Opening balance         -1000.00 EUR

2019-03-01 * Bought FOO
    Assets:Investments       2 FOO @ 150.00 EUR
    Assets:Investments              -300.00 EUR

2019-06-01 * Bought FOO
    Assets:Investments       1 FOO @ 180.00 EUR
    Assets:Investments              -180.00 EUR

$ hledger -f- check

#test bal assets:investments --average-lot-prices
#          520.00 EUR
#  3 FOO {160.00 EUR}  Assets:Investments
#end test
#