// check multiplication is good but also that original values are not modified
func TestMoneyMul(t *testing.T) {
m1 := money.Money{M: 67} //67 cents!!
m2 := money.Money{M: 6700} // 67 dollars
res := m2.Mul(&m1)
finResi := int64(4489) // 44 dollars and 89 cents
finResf := float64(44.89) // 44 dollars and 89 cents
if res.Valuei() != finResi {
t.Error("expected '4489' got: ", res.Valuei())
}
if res.Valuef() != finResf {
t.Error("expected '44.89' got: ", res.Valuef())
}
if m1.Valuei() != int64(67) {
t.Error("expected '67' got: ", m1.Valuei())
}
if m2.Valuei() != int64(6700) {
t.Error("expected '6700' got: ", m2.Valuei())
}
if m1.Valuef() != float64(0.67) {
t.Error("expected '0.67' got: ", m1.Valuef())
}
if m2.Valuef() != float64(67.00) {
t.Error("expected '67.00' got: ", m2.Valuef())
}
if res.StringD() != "44.89" {
t.Error("expected '44.89' got: ", res.StringD())
}
}