-- in.journal --
account Expenses:Food
account Expenses:Transport
account Income:Salary
account Expenses:Food
account Assets:Cash
account Expenses:Transport

-- expect --
in.journal:1:9: duplicated-account: duplicated account declaration: Expenses:Food
in.journal:2:9: duplicated-account: duplicated account declaration: Expenses:Transport
in.journal:4:9: duplicated-account: duplicated account declaration: Expenses:Food
in.journal:6:9: duplicated-account: duplicated account declaration: Expenses:Transport