require "test_helper" class TransferTest < ActiveSupport::TestCase include Account::EntriesTestHelper setup do @outflow = account_transactions(:transfer_out) @inflow = account_transactions(:transfer_in) end test "transfer destroyed if either transaction is destroyed" do assert_difference [ "Transfer.count", "Account::Transaction.count", "Account::Entry.count" ], -1 do @outflow.entry.destroy end end test "transfer has different accounts, opposing amounts, and within 4 days of each other" do outflow_entry = create_transaction(date: 1.day.ago.to_date, account: accounts(:depository), amount: 500) inflow_entry = create_transaction(date: Date.current, account: accounts(:credit_card), amount: -500) assert_difference -> { Transfer.count } => 1 do Transfer.create!( inflow_transaction: inflow_entry.account_transaction, outflow_transaction: outflow_entry.account_transaction, ) end end test "transfer cannot have 2 transactions from the same account" do outflow_entry = create_transaction(date: Date.current, account: accounts(:depository), amount: 500) inflow_entry = create_transaction(date: 1.day.ago.to_date, account: accounts(:depository), amount: -500) transfer = Transfer.new( inflow_transaction: inflow_entry.account_transaction, outflow_transaction: outflow_entry.account_transaction, ) assert_no_difference -> { Transfer.count } do transfer.save end assert_equal "Transfer must have different accounts", transfer.errors.full_messages.first end test "Transfer transactions must have opposite amounts" do outflow_entry = create_transaction(date: Date.current, account: accounts(:depository), amount: 500) inflow_entry = create_transaction(date: Date.current, account: accounts(:credit_card), amount: -400) transfer = Transfer.new( inflow_transaction: inflow_entry.account_transaction, outflow_transaction: outflow_entry.account_transaction, ) assert_no_difference -> { Transfer.count } do transfer.save end assert_equal "Transfer transactions must have opposite amounts", transfer.errors.full_messages.first end test "transfer dates must be within 4 days of each other" do outflow_entry = create_transaction(date: Date.current, account: accounts(:depository), amount: 500) inflow_entry = create_transaction(date: 5.days.ago.to_date, account: accounts(:credit_card), amount: -500) transfer = Transfer.new( inflow_transaction: inflow_entry.account_transaction, outflow_transaction: outflow_entry.account_transaction, ) assert_no_difference -> { Transfer.count } do transfer.save end assert_equal "Transfer transaction dates must be within 4 days of each other", transfer.errors.full_messages.first end test "transfer must be from the same family" do family1 = families(:empty) family2 = families(:dylan_family) family1_account = family1.accounts.create!(name: "Family 1 Account", balance: 5000, currency: "USD", accountable: Depository.new) family2_account = family2.accounts.create!(name: "Family 2 Account", balance: 5000, currency: "USD", accountable: Depository.new) outflow_txn = create_transaction(date: Date.current, account: family1_account, amount: 500) inflow_txn = create_transaction(date: Date.current, account: family2_account, amount: -500) transfer = Transfer.new( inflow_transaction: inflow_txn.account_transaction, outflow_transaction: outflow_txn.account_transaction, ) assert transfer.invalid? assert_equal "Transfer must be from the same family", transfer.errors.full_messages.first end test "from_accounts converts amounts to the to_account's currency" do accounts(:depository).update!(currency: "EUR") eur_account = accounts(:depository).reload usd_account = accounts(:credit_card) ExchangeRate.create!( from_currency: "EUR", to_currency: "USD", rate: 1.1, date: Date.current, ) transfer = Transfer.from_accounts( from_account: eur_account, to_account: usd_account, date: Date.current, amount: 500, ) assert_equal 500, transfer.outflow_transaction.entry.amount assert_equal "EUR", transfer.outflow_transaction.entry.currency assert_equal -550, transfer.inflow_transaction.entry.amount assert_equal "USD", transfer.inflow_transaction.entry.currency assert_difference -> { Transfer.count } => 1 do transfer.save! end end test "transaction can only belong to one transfer" do outflow_entry = create_transaction(date: Date.current, account: accounts(:depository), amount: 500) inflow_entry1 = create_transaction(date: Date.current, account: accounts(:credit_card), amount: -500) inflow_entry2 = create_transaction(date: Date.current, account: accounts(:credit_card), amount: -500) Transfer.create!(inflow_transaction: inflow_entry1.account_transaction, outflow_transaction: outflow_entry.account_transaction) assert_raises ActiveRecord::RecordInvalid do Transfer.create!(inflow_transaction: inflow_entry2.account_transaction, outflow_transaction: outflow_entry.account_transaction) end end end