diff --git a/tests/test_trade.py b/tests/test_trade.py
index dd7aee8c..690ad9ed 100644
--- a/tests/test_trade.py
+++ b/tests/test_trade.py
@@ -21,7 +21,7 @@ from ereuse_devicehub.db import db
 from ereuse_devicehub.client import UserClient, Client
 from ereuse_devicehub.devicehub import Devicehub
 from ereuse_devicehub.resources import enums
-from ereuse_devicehub.resources.hash_reports import ReportHash 
+from ereuse_devicehub.resources.hash_reports import ReportHash
 from ereuse_devicehub.resources.user.models import User
 from ereuse_devicehub.resources.agent.models import Person
 from ereuse_devicehub.resources.lot.models import Lot
@@ -378,7 +378,7 @@ def test_usecase_confirmation(user: UserClient, user2: UserClient):
                        item='{}/devices'.format(lot['id']),
                        query=devices[:7])
 
-    # the manager shares the temporary lot with the SCRAP as an incoming lot 
+    # the manager shares the temporary lot with the SCRAP as an incoming lot
     # for the CRAP to confirm it
     request_post = {
         'type': 'Trade',
@@ -394,17 +394,19 @@ def test_usecase_confirmation(user: UserClient, user2: UserClient):
     user.post(res=models.Action, data=request_post)
     trade = models.Trade.query.one()
 
+    assert trade.devices[0].actions[-2].t == 'Trade'
+    assert trade.devices[0].actions[-1].t == 'Confirm'
+    assert trade.devices[0].actions[-1].user == trade.user_to
+
     # the SCRAP confirms 3 of the 10 devices in its outgoing lot
     request_confirm = {
         'type': 'Confirm',
         'action': trade.id,
         'devices': [snap1['device']['id'], snap2['device']['id'], snap3['device']['id']]
     }
-    assert trade.devices[0].actions[-2].t == 'Trade'
-    assert trade.devices[0].actions[-1].t == 'Confirm'
-    assert trade.devices[0].actions[-1].user == trade.user_to
-
+    # import pdb; pdb.set_trace()
     user2.post(res=models.Action, data=request_confirm)
+
     assert trade.devices[0].actions[-1].t == 'Confirm'
     assert trade.devices[0].actions[-1].user == trade.user_from
     n_actions = len(trade.devices[0].actions)
@@ -438,8 +440,8 @@ def test_usecase_confirmation(user: UserClient, user2: UserClient):
         'type': 'Confirm',
         'action': trade.id,
         'devices': [
-            snap1['device']['id'], 
-            snap2['device']['id'], 
+            snap1['device']['id'],
+            snap2['device']['id'],
             snap3['device']['id'],
             snap4['device']['id'],
             snap5['device']['id'],
@@ -457,7 +459,7 @@ def test_usecase_confirmation(user: UserClient, user2: UserClient):
     assert trade.devices[-1].actions[-1].user == trade.user_from
     assert len(trade.devices[0].actions) == n_actions
 
-    # The manager remove one device of the lot and automaticaly 
+    # The manager remove one device of the lot and automaticaly
     # is create one revoke action
     device_10 = trade.devices[-1]
     lot, _ = user.delete({},
@@ -565,7 +567,7 @@ def test_confirmRevoke(user: UserClient, user2: UserClient):
                        item='{}/devices'.format(lot['id']),
                        query=devices)
 
-    # the manager shares the temporary lot with the SCRAP as an incoming lot 
+    # the manager shares the temporary lot with the SCRAP as an incoming lot
     # for the CRAP to confirm it
     request_post = {
         'type': 'Trade',
@@ -586,8 +588,8 @@ def test_confirmRevoke(user: UserClient, user2: UserClient):
         'type': 'Confirm',
         'action': trade.id,
         'devices': [
-            snap1['device']['id'], 
-            snap2['device']['id'], 
+            snap1['device']['id'],
+            snap2['device']['id'],
             snap3['device']['id'],
             snap4['device']['id'],
             snap5['device']['id'],
@@ -604,7 +606,7 @@ def test_confirmRevoke(user: UserClient, user2: UserClient):
     assert trade.devices[-1].actions[-1].t == 'Confirm'
     assert trade.devices[-1].actions[-1].user == trade.user_from
 
-    # The manager remove one device of the lot and automaticaly 
+    # The manager remove one device of the lot and automaticaly
     # is create one revoke action
     device_10 = trade.devices[-1]
     lot, _ = user.delete({},
@@ -704,3 +706,182 @@ def test_add_document_to_lot(user: UserClient, user2: UserClient, client: Client
     user2.get(res=TradeDocument, item=doc['id'], status=404)
     user2.delete(res=TradeDocument, item=doc['id'], status=404)
     shutil.rmtree(path)
+
+
+@pytest.mark.mvp
+@pytest.mark.usefixtures(conftest.app_context.__name__)
+def test_usecase1_document(user: UserClient, user2: UserClient):
+    """Example of one usecase about confirmation"""
+    # the pRp (manatest_usecase_confirmationger) creates a temporary lot
+    lot, _ = user.post({'name': 'MyLot'}, res=Lot)
+    path_dir_base = os.path.join(app.config['PATH_DOCUMENTS_STORAGE'] , user.email)
+    path = os.path.join(path_dir_base, lot['id'])
+    data = {'lot': lot['id'], 'file_name': 'test.csv'}
+    base64_bytes = base64.b64encode(b'This is a test')
+    base64_string = base64_bytes.decode('utf-8')
+    data['file'] = base64_string
+    user.post(res=TradeDocument, data=data)
+    user.post(res=TradeDocument, data=data)
+
+    # the manager shares the temporary lot with the SCRAP as an incoming lot
+    # for the CRAP to confirm it
+    request_post = {
+        'type': 'Trade',
+        'devices': [],
+        'userFrom': user2.email,
+        'userTo': user.email,
+        'price': 10,
+        'date': "2020-12-01T02:00:00+00:00",
+        'lot': lot['id'],
+        'confirm': True,
+    }
+
+    user.post(res=models.Action, data=request_post)
+    trade = models.Trade.query.one()
+
+    assert trade.documents[0].actions[-2].t == 'Trade'
+    assert trade.documents[0].actions[-1].t == 'Confirm'
+    assert trade.documents[0].actions[-1].user == trade.user_to
+    assert trade.documents[1].actions[-2].t == 'Trade'
+    assert trade.documents[1].actions[-1].t == 'Confirm'
+    assert trade.documents[1].actions[-1].user == trade.user_to
+    assert trade.documents[0].path_name != trade.documents[1].path_name
+
+    # ========
+    # import pdb; pdb.set_trace()
+    # the SCRAP confirms 1 of the 2 documents in its outgoing lot
+    request_confirm = {
+        'type': 'Confirm',
+        'action': trade.id,
+        'documents': [trade.documents[0].id]
+    }
+
+    user2.post(res=models.Action, data=request_confirm)
+    assert trade.documents[0].actions[-1].t == 'Confirm'
+    assert trade.documents[0].actions[-1].user == trade.user_from
+    n_actions = len(trade.documents[0].actions)
+
+    # check validation error
+    # request_confirm = {
+        # 'type': 'Confirm',
+        # 'action': trade.id,
+        # 'devices': [
+            # snap10['device']['id']
+        # ]
+    # }
+
+    # user2.post(res=models.Action, data=request_confirm, status=422)
+
+
+    # ========
+    shutil.rmtree(path)
+    """
+    # The manager add 3 device more into the lot
+    lot, _ = user.post({},
+                       res=Lot,
+                       item='{}/devices'.format(lot['id']),
+                       query=devices[7:])
+
+    assert trade.devices[-1].actions[-2].t == 'Trade'
+    assert trade.devices[-1].actions[-1].t == 'Confirm'
+    assert trade.devices[-1].actions[-1].user == trade.user_to
+    assert len(trade.devices[0].actions) == n_actions
+
+
+    # the SCRAP confirms the rest of devices
+    request_confirm = {
+        'type': 'Confirm',
+        'action': trade.id,
+        'devices': [
+            snap1['device']['id'],
+            snap2['device']['id'],
+            snap3['device']['id'],
+            snap4['device']['id'],
+            snap5['device']['id'],
+            snap6['device']['id'],
+            snap7['device']['id'],
+            snap8['device']['id'],
+            snap9['device']['id'],
+            snap10['device']['id']
+        ]
+    }
+
+    user2.post(res=models.Action, data=request_confirm)
+    assert trade.devices[-1].actions[-3].t == 'Trade'
+    assert trade.devices[-1].actions[-1].t == 'Confirm'
+    assert trade.devices[-1].actions[-1].user == trade.user_from
+    assert len(trade.devices[0].actions) == n_actions
+
+    # The manager remove one device of the lot and automaticaly
+    # is create one revoke action
+    device_10 = trade.devices[-1]
+    lot, _ = user.delete({},
+                       res=Lot,
+                       item='{}/devices'.format(lot['id']),
+                       query=devices[-1:], status=200)
+    assert len(trade.lot.devices) == len(trade.devices) == 9
+    assert not device_10 in trade.devices
+    assert device_10.actions[-1].t == 'Revoke'
+
+    lot, _ = user.delete({},
+                         res=Lot,
+                         item='{}/devices'.format(lot['id']),
+                         query=devices[-1:], status=200)
+
+    assert device_10.actions[-1].t == 'Revoke'
+    assert device_10.actions[-2].t == 'Confirm'
+
+    # the SCRAP confirms the revoke action
+    request_confirm_revoke = {
+        'type': 'ConfirmRevoke',
+        'action': device_10.actions[-1].id,
+        'devices': [
+            snap10['device']['id']
+        ]
+    }
+
+    user2.post(res=models.Action, data=request_confirm_revoke)
+    assert device_10.actions[-1].t == 'ConfirmRevoke'
+    assert device_10.actions[-2].t == 'Revoke'
+
+    request_confirm_revoke = {
+        'type': 'ConfirmRevoke',
+        'action': device_10.actions[-1].id,
+        'devices': [
+            snap9['device']['id']
+        ]
+    }
+
+    # check validation error
+    user2.post(res=models.Action, data=request_confirm_revoke, status=422)
+
+
+    # The manager add again device_10
+    assert len(trade.devices) == 9
+    lot, _ = user.post({},
+                       res=Lot,
+                       item='{}/devices'.format(lot['id']),
+                       query=devices[-1:])
+
+    assert device_10.actions[-1].t == 'Confirm'
+    assert device_10 in trade.devices
+    assert len(trade.devices) == 10
+
+
+    # the SCRAP confirms the action trade for device_10
+    request_reconfirm = {
+        'type': 'Confirm',
+        'action': trade.id,
+        'devices': [
+            snap10['device']['id']
+        ]
+    }
+    user2.post(res=models.Action, data=request_reconfirm)
+    assert device_10.actions[-1].t == 'Confirm'
+    assert device_10.actions[-1].user == trade.user_from
+    assert device_10.actions[-2].t == 'Confirm'
+    assert device_10.actions[-2].user == trade.user_to
+    assert device_10.actions[-3].t == 'ConfirmRevoke'
+    assert len(device_10.actions) == 13
+
+    """