##YAML test on the account_voucher as depicted in this bug report: https://bugs.launchpad.net/openobject-addons/+bug/954155
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  Only manager can create and take decision about bank and currency there I checkd this test with user who is finance manager.
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  !context
    uid: 'res_users_account_voucher_manager'
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  In order to check the payment with multi-currency in OpenERP, 
  I create an invoice in EUR and make payment in USD based on the currency rating.
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  I update the Currency USD in OpenERP for January with rate 1.200000
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  !python {model: res.currency.rate}: |
    from datetime import datetime
    curr_id = self.pool.get('res.currency').search(cr, uid, [('name', '=', 'USD')])[0]
    date = '%s-01-01' %(datetime.now().year)
    ids = self.search(cr, uid, [('currency_id','=',curr_id), ('name', '=', date)])
    self.write(cr, uid, ids, {'rate': 1.200000})
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  I update the Currency USD in OpenERP for February with rate 1.400000
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  !record {model: res.currency.rate, id: feb_usd}:
    currency_id: base.USD
    name: !eval "'%s-02-01' %(datetime.now().year)"
    rate: 1.400000
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  I create a bank account with USD as currency
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  !record {model: account.account, id: account_eur_usd_id}:
    currency_id: base.USD
    name: "Bank usd"
    code: "BUSD"
    type: 'liquidity'
    user_type: account.data_account_type_asset
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  I create a bank journal with USD as currency
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  !record {model: account.journal, id: bank_journal_USD1}:
    name: Bank Journal Test(USD)
    code: BEUSD
    type: bank
    analytic_journal_id: account.sit
    sequence_id: account.sequence_bank_journal
    default_debit_account_id: account_eur_usd_id
    default_credit_account_id: account_eur_usd_id
    currency: base.USD
    company_id: base.main_company
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  On the first of January, I create an invoice of 1000€
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  !record {model: account.invoice, id: account_invoice_eur_usd}:
    account_id: account.a_recv
    company_id: base.main_company
    currency_id: base.EUR
    date_invoice: !eval "'%s-01-01' %(datetime.now().year)"
    period_id: account.period_1
    invoice_line:
      - account_id: account.a_sale
        name: '[PCSC234] PC Assemble SC234'
        price_unit: 1000.0
        quantity: 1.0
        product_id: product.product_product_3
        uos_id: product.product_uom_unit
    journal_id: account.sales_journal
    partner_id: base.res_partner_19
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  I validate the invoice.
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  !workflow {model: account.invoice, action: invoice_open, ref: account_invoice_eur_usd}
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  I check that invoice move is correct
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  !python {model: account.invoice}: |
    invoice = self.browse(cr, uid, ref("account_invoice_eur_usd"))
    assert invoice.state == 'open', "invoice state is not open"
    assert invoice.period_id, "Period is not created for open invoice"
    assert invoice.move_id, "Move not created for open invoice"
    assert invoice.move_id.state == 'posted', "Move state is not posted"
    for move_line in invoice.move_id.line_id:
        assert move_line.state == 'valid', "Move line state is not valid"
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  I set the type receipt for this voucher
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  !context
    'type': 'receipt'
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  On the first of February, I create the voucher of payment with values 1350 USD, journal USD,
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  !record {model: account.voucher, id: account_voucher_eur_usd_case, view: view_vendor_receipt_form}:
    account_id: account.cash
    amount: 1350.0
    company_id: base.main_company
    journal_id: bank_journal_USD1
    name: 'payment: Case EUR/USD'
    partner_id: base.res_partner_19
    period_id: account.period_5
    date: !eval time.strftime("%Y-02-01")
    payment_option: 'with_writeoff'
    writeoff_acc_id: account.a_expense
    comment: 'Write Off'
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  I fill amount 1400 for the invoice of 1400$
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  !python {model: account.voucher}: |
    data = []
    voucher = self.browse(cr, uid, ref('account_voucher_eur_usd_case'))
    for item in voucher.line_cr_ids:
        if item.amount_unreconciled == 1400:
            data += [(item.id, 1400)]
    assert data, "Credit line not found"
    for line_id, amount in data:
        self.pool.get('account.voucher.line').write(cr, uid, [line_id], {'amount': amount})
    assert (voucher.state=='draft'), "Voucher is not in draft state"
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  I check that writeoff amount computed is -50.0
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  !python {model: account.voucher}: |
    voucher = self.browse(cr, uid, ref('account_voucher_eur_usd_case'))
    assert (voucher.writeoff_amount == -50.0), "Writeoff amount is not -50.0"
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  I confirm the voucher
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  !workflow {model: account.voucher, action: proforma_voucher, ref: account_voucher_eur_usd_case}
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  I check that the voucher state is "Posted"
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  !assert {model: account.voucher, id: account_voucher_eur_usd_case}:
    - state == 'posted'
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  I check that the move of voucher is valid
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  !python {model: account.voucher}: |
    voucher = self.browse(cr, uid, ref('account_voucher_eur_usd_case'))
    assert voucher.move_ids, "Move line is not created for this voucher"
    assert (voucher.number == voucher.move_ids[0].move_id.name), "referance number is not created"
    assert voucher.period_id, "period is not created"
    for move_line in voucher.move_ids:
        assert move_line.state == 'valid', "Voucher move is not valid"
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  I check that my debtor account is correct
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  I check that my currency rate difference is correct. 1000 in credit with no amount_currency
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  I  check that the total reconcilation created entries as expected
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  I check that my writeoff is correct. 35.71 debit and 50 amount_currency
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  I check that my bank account is correct. 964.29 debit and 1350 amount_currency
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  !python {model: account.voucher}: |
    voucher = self.browse(cr, uid, ref('account_voucher_eur_usd_case'))
    for move_line in voucher.move_ids:
        if move_line.amount_currency == 1350:
            assert move_line.debit == 964.29,"debtor account is not correct"
        if move_line.amount_currency == 50:
            assert move_line.debit == 35.71,"write off bank account is not correct"
        if move_line.amount_currency == 0.0:
            assert move_line.credit == 1000,"total reconcile is not correct of invoice"
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  I check that the move of payment in invoice is valid
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  !python {model: account.invoice}: |
    invoice = self.browse(cr, uid, ref("account_invoice_eur_usd"))
    for payment_line in invoice.payment_ids:
        assert payment_line.state == 'valid', "payment move line state is not valid"
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  I check the residual amount of invoice should be 0 in residual currency and 0 in amount_residual and paid
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  !python {model: account.invoice}: |
    invoice_id = self.browse(cr, uid, ref("account_invoice_eur_usd"))
    move_line_obj = self.pool.get('account.move.line')
    move_lines = move_line_obj.search(cr, uid, [('move_id', '=', invoice_id.move_id.id), ('invoice', '=', invoice_id.id), ('account_id', '=', invoice_id.account_id.id)])
    move_line = move_line_obj.browse(cr, uid, move_lines[0])
    assert move_line.amount_residual_currency == 0.0, "Residual amount is not correct for Invoice"
    assert move_line.amount_residual == 0.0, "Residual amount is not correct for Invoice"
    assert invoice_id.state == 'paid', "Invoice is not paid"