[IMP] *: translation methods cleaning

Extract some cleaning wanted in #30759 but not related to language packs

- `amount_to_text` should work only on activated languages
- deprecate `load_lang` and rely on `_create_lang` or `_activate_lang`
- `trans_load_data` and `_load_module_terms` no longer silently activate languages
- pass explicitly parameters instead of relying on context content
- replace some `IrTranslation._load_module_terms(['base'], ['fr_FR'])` by `BaseModule._update_translations(['fr_FR'])` for higher level methods
- create `TranslationExporter` class to clarify the `trans_export` method (and clean dead code)

closes odoo/odoo#38859

Task-id: 2088290
Pad: https://pad.odoo.com/p/r.f6f789f8711d21314bd902972153ea9d
Signed-off-by: Martin Trigaux (mat) <mat@odoo.com>

addons/test_mail_full/tests/test_sms_composer.py

@@ -368,7 +368,7 @@ class TestSMSComposerMass(test_mail_full_common.BaseFunctionalTest, sms_common.M
             self.assertSMSOutgoing(record.customer_id, None, 'Dear %s this is an SMS.' % record.display_name)
 
     def test_composer_mass_active_ids_w_template_and_lang(self):
-        self.env.ref('base.lang_fr').write({'active': True})
+        self.env['res.lang']._activate_lang('fr_FR')
         self.env['ir.translation'].create({
             'type': 'model',
             'name': 'sms.template,body',
@@ -425,7 +425,7 @@ class TestSMSComposerMass(test_mail_full_common.BaseFunctionalTest, sms_common.M
         """ Test the context action from a SMS template (Add context action button)
         and the usage with the sms composer """
         # Create the lang info
-        self.env.ref('base.lang_fr').write({'active': True})
+        self.env['res.lang']._activate_lang('fr_FR')
         self.env['ir.translation'].create({
             'type': 'model',
             'name': 'sms.template,body',

addons/test_mail_full/tests/test_sms_template.py

@@ -25,7 +25,7 @@ class TestSmsTemplate(test_mail_full_common.BaseFunctionalTest, sms_common.MockS
         self.assertEqual(rendered_body[self.test_record.id], 'Dear %s this is an SMS.' % self.test_record.display_name)
 
     def test_sms_template_lang(self):
-        self.env.ref('base.lang_fr').write({'active': True})
+        self.env['res.lang']._activate_lang('fr_FR')
         self.user_admin.write({'lang': 'en_US'})
         self.env['ir.translation'].create({
             'type': 'model',

addons/website/tests/test_base_url.py

@@ -15,8 +15,7 @@ class TestUrlCommon(odoo.tests.HttpCase):
             'domain': self.domain,
         })
 
-        lang_fr = self.env.ref('base.lang_fr')
-        lang_fr.write({'active': True})
+        lang_fr = self.env['res.lang']._activate_lang('fr_FR')
         self.website.language_ids = self.env.ref('base.lang_en') + lang_fr
         self.website.default_lang_id = self.env.ref('base.lang_en')
 

addons/website/tests/test_lang_url.py

@@ -13,8 +13,8 @@ class TestLangUrl(HttpCase):
 
         # Simulate multi lang without loading translations
         self.website = self.env.ref('website.default_website')
-        lang_fr = self.env.ref('base.lang_fr')
-        lang_fr.write({'active': True, 'url_code': 'fr'})
+        lang_fr = self.env['res.lang']._activate_lang('fr_FR')
+        lang_fr.write({'url_code': 'fr'})
         self.website.language_ids = self.env.ref('base.lang_en') + lang_fr
         self.website.default_lang_id = self.env.ref('base.lang_en')
 

addons/website/tests/test_qweb.py

@@ -73,7 +73,7 @@ class TestQwebProcessAtt(TransactionCase):
     def setUp(self):
         super(TestQwebProcessAtt, self).setUp()
         self.website = self.env.ref('website.default_website')
-        self.env.ref('base.lang_fr').active = True
+        self.env['res.lang']._activate_lang('fr_FR')
         self.website.language_ids = self.env.ref('base.lang_en') + self.env.ref('base.lang_fr')
         self.website.default_lang_id = self.env.ref('base.lang_en')
         self.website.cdn_activated = True