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  In order to test change currency wizard I create an invoice with currency "EUR" and change it to "USD" using the wizard
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  !record {model: account.invoice, id: account_invoice_currency}:
    account_id: account.a_recv
    company_id: base.main_company
    currency_id: base.EUR
    invoice_line:
      - account_id: account.a_sale
        name: '[PC1] Basic PC'
        price_unit: 450.0
        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_12
    reference_type: none

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  I check that Initially customer invoice is in the draft state
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  !assert {model: account.invoice, id: account_invoice_currency, string: Customer Invoice is in Draft state}:
    - state == 'draft'
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  Now I select USD as new currency
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  !record {model: account.change.currency, id: account_change_currency_0}:
    currency_id: base.USD
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  I clicked on Change Currency button to change the currency
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  !python {model: account.change.currency}: |
    self.view_init(cr, uid, [ref("account_change_currency_0")], {"lang": 'en_US',
      "active_model": "account.invoice", "tz": False, "active_ids":
      [ref("account_invoice_currency")], "type": "out_invoice", "active_id": ref("account_invoice_currency"),
    })
    self.change_currency(cr, uid, [ref("account_change_currency_0")], {"lang": 'en_US',
      "active_model": "account.invoice", "tz": False, "active_ids":
      [ref("account_invoice_currency")], "type": "out_invoice", "active_id": ref("account_invoice_currency"),
    })
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  I change the state of invoice to proforma2 by clicking PRO-FORMA button
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  !workflow {model: account.invoice, action: invoice_proforma2, ref: account_invoice_currency}
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  I check that now customer invoice is in the "proforma2" state
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  !assert {model: account.invoice, id: account_invoice_currency}:
    - state == 'proforma2'
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  I can't change the currency of invoice when it is not in draft state so I change the state to cancel
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  !workflow {model: account.invoice, action: invoice_cancel, ref: account_invoice_currency}
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  I change the state to "Draft"
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  !python {model: account.invoice}: |
    self.action_cancel_draft(cr, uid, [ref("account_invoice_currency")], {"lang": 'en_US',
      "tz": False, "active_model": "ir.ui.menu", "active_ids": [ref("account.menu_action_invoice_tree1")],
      "type": "out_invoice", "active_id": ref("account.menu_action_invoice_tree1"),
      })
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  I change the currency.
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  !record {model: account.change.currency, id: account_change_currency_0}:
    currency_id: base.USD
-
  I clicked on Change Currency button to change the currency
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  !python {model: account.change.currency}: |
    self.change_currency(cr, uid, [ref("account_change_currency_0")], {"lang": 'en_US',
      "active_model": "account.invoice", "tz": False, "active_ids":
      [ref("account_invoice_currency")], "type": "out_invoice", "active_id": ref("account_invoice_currency"),
      })
-
  I check that the currency is changed successfully
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  !assert {model: account.invoice, id: account_invoice_currency, string: Currency changed from EUR to USD}:
    - currency_id.id == ref("base.USD")