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  Set a product as using fifo price
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  !record {model: product.product, id: product_fiforet_icecream}:
    default_code: FIFO
    name: FIFO Ice Cream
    type: product
    categ_id: product.product_category_1
    uom_id: product.product_uom_kgm
    uom_po_id: product.product_uom_kgm
    cost_method: real
    valuation: real_time
    property_stock_account_input: account.o_expense
    property_stock_account_output: account.o_income
    description: FIFO Ice Cream can be mass-produced and thus is widely available in developed parts of the world. Ice cream can be purchased in large cartons (vats and squrounds) from supermarkets and grocery stores, in smaller quantities from ice cream shops, convenience stores, and milk bars, and in individual servings from small carts or vans at public events.
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  I create a draft Purchase Order for first in move for 10 kg at 50 euro
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  !record {model: purchase.order, id: purchase_order_fiforet1}:
    partner_id: base.res_partner_3
    location_id: stock.stock_location_stock
    pricelist_id: 1
    order_line:
      - product_id: product_fiforet_icecream
        product_qty: 10.0
        product_uom: product.product_uom_categ_kgm
        price_unit: 50.0
        name: 'FIFO Ice Cream'
- 
  I create a draft Purchase Order for second shipment for 30 kg at 80 euro
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  !record {model: purchase.order, id: purchase_order_fiforet2}:
    partner_id: base.res_partner_3
    location_id: stock.stock_location_stock
    pricelist_id: 1
    order_line:
      - product_id: product_fiforet_icecream
        product_qty: 30.0
        product_uom: product.product_uom_categ_kgm
        price_unit: 80.0
        name: 'FIFO Ice Cream'
- 
  I confirm the first purchase order
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  !workflow {model: purchase.order, action: purchase_confirm, ref: purchase_order_fiforet1}
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  Process the reception of purchase order 1
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  !python {model: stock.partial.picking}: |
    pick_ids = self.pool.get('purchase.order').browse(cr, uid, ref("purchase_order_fiforet1")).picking_ids
    partial_id = self.create(cr, uid, {}, context={'active_model': 'stock.picking','active_ids': [pick_ids[0].id]})
    self.do_partial(cr, uid, [partial_id])
- 
  Check the standard price of the product (fifo icecream)
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  !python {model: product.product}: |
    assert self.browse(cr, uid, ref("product_fiforet_icecream")).standard_price == 0.0, 'Standard price should not have changed!'
- 
  I confirm the second purchase order
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  !workflow {model: purchase.order, action: purchase_confirm, ref: purchase_order_fiforet2}
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  Process the reception of purchase order 2
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  !python {model: stock.partial.picking}: |
    pick_ids = self.pool.get('purchase.order').browse(cr, uid, ref("purchase_order_fiforet2")).picking_ids
    partial_id = self.create(cr, uid, {}, context={'active_model': 'stock.picking','active_ids': [pick_ids[0].id]})
    self.do_partial(cr, uid, [partial_id])
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  Return the goods of purchase order 2
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  !python {model: stock.return.picking}: |
    pick_ids = self.pool.get('purchase.order').browse(cr, uid, ref("purchase_order_fiforet2")).picking_ids
    return_id = self.create(cr, uid, {}, context={'active_model':'stock.picking', 'active_id': pick_ids[0].id})
    res = self.create_returns(cr, uid, [return_id], context={'active_id': pick_ids[0].id})
    return_move_id = self.pool.get("stock.move").search(cr, uid, [('move_returned_from','=', pick_ids[0].move_lines[0].id)])
    movepick_obj = self.pool.get("stock.partial.move")
    movepick_id = movepick_obj.create(cr, uid, {}, context={'active_model': 'stock.move', 'active_ids': return_move_id})
    movepick_obj.do_partial(cr, uid, [movepick_id])
- 
  Check the standard price of the product (fifo return icecream) changed to 70.0
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  !python {model: product.product}: |
    assert self.browse(cr, uid, ref("product_fiforet_icecream")).standard_price == 70.0, 'Standard price should have changed to 70.0!'