Hi Jay,


I applied this one (Just change the indentation from yours...):

=== modified file 'account/wizard/wizard_pay_invoice.py'
--- account/wizard/wizard_pay_invoice.py	2010-01-20 11:40:27 +0000
+++ account/wizard/wizard_pay_invoice.py	2010-01-22 11:03:01 +0000
@@ -60,14 +60,16 @@
     journal = pool.get('account.journal').browse(cr, uid, data['form']['journal_id'], context)
     # Compute the amount in company's currency, with the journal currency (which is equal to payment currency) 
     # when it is needed :  If payment currency (according to selected journal.currency) is <> from company currency
+    cur_diff = False
     if journal.currency and invoice.company_id.currency_id.id<>journal.currency.id:
         ctx = {'date':data['form']['date']}
         amount = cur_obj.compute(cr, uid, journal.currency.id, invoice.company_id.currency_id.id, amount, context=ctx)
         currency_id = journal.currency.id
         # Put the paid amount in currency, and the currency, in the context if currency is different from company's currency
         context.update({'amount_currency':form['amount'],'currency_id':currency_id})
-    
-    if invoice.company_id.currency_id.id<>invoice.currency_id.id:
+        cur_diff = True
+    # if invoice.company_id.currency_id.id<>invoice.currency_id.id:
+    if not cur_diff and invoice.company_id.currency_id.id<>invoice.currency_id.id:
         ctx = {'date':data['form']['date']}
         amount = cur_obj.compute(cr, uid, invoice.currency_id.id, invoice.company_id.currency_id.id, amount, context=ctx)
         currency_id = invoice.currency_id.id


This pass the last errors, but still get one on the next one:
  Background:
      Given I am loged as admin user with password admin used
      And the company currency is set to EUR 
      And the following currency rate settings are:
      |code|rate|name|
      |EUR|1.000|01-01-2009|
      |CHF|1.644|01-01-2009|
      |CHF|1.500|09-09-2009|
      |CHF|0.6547|10-10-2009|
      |USD|1.3785|01-01-2009|
      And a cash journal in USD exists
      And a cash journal in CHF exists
      And a cash journal in EUR exists

    Scenario: make_and_validate_payments_with_pay_invoice_wizard
      Given I have recorded on the 1 jan 2009 a supplier invoice (in_invoice) of 1000,0 CHF without tax called MySupplierInvoicePayWizard
      When I press the validate button
      Then I should see the invoice MySupplierInvoicePayWizard open

      When I call the Pay invoice wizard
      And I partially pay 200.0 CHF.- on the 10 jan 2009
      Then I should see a residual amount of 800.0 CHF.-
      
      When I call the Pay invoice wizard
      And I partially pay 200.0 USD.- on the 11 jan 2009
      Then I should see a residual amount of 561.48 CHF.-
      
      When I call the Pay invoice wizard
      And I partially pay 200.0 EUR.- on the 12 jan 2009
      Then I should see a residual amount of 232.68 CHF.-

BREAKS HERE !!!
expected: 232.68,
           got: 361.48 (using ==)

      
      When I call the Pay invoice wizard
      And I completely pay the residual amount in CHF on the 13 sep 2009
      Then I should see a residual amount of 0.0 CHF.-
      And I should see the invoice MySupplierInvoicePayWizard paid


Regards


P.S. You can know check it o the new Stable release (0.3) of OERPScenario here :

Branch : bzr branch lp:oerpsenario/stable
Project : https://launchpad.net/oerpsenario