Rewrite tests for EmComponent and Model

EditorialModel/test/test_component.py

@@ -1,700 +1,94 @@
-import os
-import datetime
-import time
-import logging
-import json
-import shutil
-
-#from django.test import TestCase
-from django.conf import settings
-
-from unittest import TestCase
 import unittest
 
+from EditorialModel.model import Model
+from EditorialModel.components import EmComponent
 from EditorialModel.classes import EmClass
-from EditorialModel.classtypes import EmClassType
-
-from EditorialModel.components import EmComponent, EmComponentNotExistError, EmComponentExistError
-import EditorialModel.fieldtypes as ftypes
+from EditorialModel.types import EmType
+from EditorialModel.fieldgroups import EmFieldGroup
+from EditorialModel.fields import EmField
 
-from EditorialModel.test.utils import *
-
-from Lodel.utils.mlstring import MlString
-
-from Database import sqlutils
-from Database import sqlsetup
-import sqlalchemy as sqla
-
-import copy
-from EditorialModel.model import Model
 from EditorialModel.backend.json_backend import EmBackendJson
+from EditorialModel.migrationhandler.dummy import DummyMigrationHandler
 
-os.environ.setdefault("DJANGO_SETTINGS_MODULE", "Lodel.settings")
-
-TEST_COMPONENT_DBNAME = 'test_em_component_db.sqlite'
-
-EM_TEST = os.path.join(os.path.dirname(os.path.realpath(__file__)), 'me.json')
-EM_TEST_OBJECT = None
-
-#=#############=#
-#  TESTS SETUP  #
-#=#############=#
-
-def setUpModule():
-    """ This function is run once for this module.
-
-        The goal are to overwrtie Db configs, and prepare objects for test_case initialisation
-    """
-    global EM_TEST_OBJECT
-    EM_TEST_OBJECT = Model(EmBackendJson(EM_TEST))
-
-    # cleanDb(TEST_COMPONENT_DBNAME)
-
-    # setDbConf(TEST_COMPONENT_DBNAME)
-    #Disable logging but CRITICAL
-    logging.basicConfig(level=logging.CRITICAL)
-
-    #testDB setup
-    # tables = sqlsetup.get_schema()
-    # ttest = {   'name':'ttest',
-    #             'columns':  [
-    #                 {"name":"uid",          "type":"INTEGER", "extra":{"foreignkey":"uids.uid", "nullable":False, "primarykey":True}},
-    #                 {"name":"name",         "type":"VARCHAR(50)", "extra":{"nullable":False, "unique":True}},
-    #                 {"name":"string",       "type":"TEXT"},
-    #                 {"name":"help",         "type":"TEXT"},
-    #                 {"name":"rank",         "type":"INTEGER"},
-    #                 {"name":"rank_fam",    "type":"VARCHAR(1)"},
-    #                 {"name":"date_update",  "type":"DATETIME"},
-    #                 {"name":"date_create",  "type":"DATETIME"}
-    #             ]
-    #         }
-    # tables.append(ttest)
-    #
-    # globals()['tables'] = tables
-
-    #Creating db structure
-
-    # initTestDb(TEST_COMPONENT_DBNAME)
-    # setDbConf(TEST_COMPONENT_DBNAME)
-
-    # sqlsetup.init_db('default', False, tables)
-
-    # dbe = sqlutils.get_engine('default')
-
-    # Insertion of testings datas
-    # conn = dbe.connect()
-    # test_table = sqla.Table(EmTestComp.table, sqlutils.meta(dbe))
-    # uids_table = sqla.Table('uids', sqlutils.meta(dbe))
-
-    #Creating uid for the EmTestComp
-    # for v in ComponentTestCase.test_values:
-    #     uid = v['uid']
-    #     req = uids_table.insert(values={'uid':uid, 'table': EmTestComp.table })
-    #     conn.execute(req)
-
-    # WARNING !!! Rank has to be ordened and incremented by one for the modify_rank tests
-
-    # for i in range(len(ComponentTestCase.test_values)):
-    #     ComponentTestCase.test_values[i]['date_create'] = datetime.datetime.utcnow()
-    #     ComponentTestCase.test_values[i]['date_update'] = datetime.datetime.utcnow()
-    #     ComponentTestCase.test_values[i]['rank_fam'] = '1'
-    #
-    #
-    # req = test_table.insert(values=ComponentTestCase.test_values)
-    # conn.execute(req)
-    # conn.close()
-    #
-    # saveDbState(TEST_COMPONENT_DBNAME)
-
-    # logging.getLogger().setLevel(logging.CRITICAL)
-    pass
-
-def tearDownModule():
-    # cleanDb(TEST_COMPONENT_DBNAME)
-    """
-    try:
-        os.unlink(TEST_COMPONENT_DBNAME)
-    except:pass
-    try:
-        os.unlink(TEST_COMPONENT_DBNAME+'_bck')
-    except:pass
-    """
-    pass
-
-
-#A dummy EmComponent child class use to make tests
-#class EmTestComp(EmComponent):
-#    table = 'ttest'
-#    ranked_in = 'rank_fam'
-#    _fields = [('rank_fam', ftypes.EmField_char)]
-
-# The parent class of all other test cases for component
-# It defines a SetUp function and some utility functions for EmComponent tests
-class ComponentTestCase(TestCase):
 
-    test_values = []
-
-    test_values = [
-         {'classtype': 'entity', 'name': 'foo', 'string': MlString({"foo":"bar"}), 'help_text': MlString({"foo":"foobar"})},
-         {'classtype': 'entity', 'name': '123', 'string': MlString({"num":"456"}), 'help_text': MlString({"num":"4242"})},
-         {'classtype':'entity', 'name': 'name', 'string': MlString({}), 'help_text': MlString({})}
-    ]
-
-    # @property
-    # def tables(self):
-    #     return globals()['tables']
+class TestEmComponent(unittest.TestCase):
     def setUp(self):
-
-        # self.dber = sqlutils.get_engine('default')
-        # self.test_values = self.__class__.test_values
-        #Db RAZ
-        #shutil.copyfile(TEST_COMPONENT_DBNAME+'_bck', globals()['component_test_dbfilename'])
-        # restoreDbState(TEST_COMPONENT_DBNAME)
-        pass
-
-    def check_equals(self, component_class, expected_val, test_comp, check_date=True, msg=''):
-        """ This function checks that a EmTestComp has expected_val for values"""
-        val = expected_val
-        self.assertIsInstance(test_comp, component_class, msg)
-        for vname in val:
-            if vname in ['string', 'help']:  # Special test for mlstrings
-                # MlString comparison
-                if isinstance(val[vname], MlString):
-                    vml = val[vname].translations
-                else:
-                    vml = json.loads(val[vname])
-                for vn in vml:
-                    self.assertEqual(vml[vn], getattr(test_comp, vname).get(vn), msg)
-            elif vname in ['date_create', 'date_update']:
-                # Datetime comparison
-                if check_date:
-                    self.assertEqualDatetime(val[vname], getattr(test_comp, vname), vname + " assertion error : " + msg)
-            else:
-                prop = vname
-                self.assertEqual(getattr(test_comp, prop), val[vname], msg + " Inconsistecy for " + prop + " property")
-
-    '''
-    def check_equals(self, excepted_val, test_comp, check_date=True, msg=''):
-        """ This function check that a EmTestComp has excepted_val for values """
-        val = excepted_val
-        self.assertIsInstance(test_comp, EmTestComp, msg)
-        for vname in val:
-            if vname in ['string', 'help']: #Special test for mlStrings
-                #MlString comparison
-                vml = json.loads(val[vname])
-                for vn in vml:
-                    self.assertEqual(vml[vn], getattr(test_comp, vname).get(vn), msg)
-            elif vname in ['date_create', 'date_update']:
-                # Datetime comparison
-                if check_date:
-                    self.assertEqualDatetime(val[vname], getattr(test_comp, vname), vname+" assertion error : "+msg)
-            else:
-                prop = vname
-                self.assertEqual(getattr(test_comp, prop), val[vname], msg+"Inconsistency for "+prop+" property")
-        pass
-    '''
-
-    def assertEqualDatetime(self, d1,d2, msg=""):
-        """ Compare a date from the database with a datetime (that have microsecs, in db we dont have microsecs) """
-        self.assertTrue(    d1.year == d2.year
-                            and d1.month == d2.month
-                            and d1.day == d2.day
-                            and d1.hour == d2.hour
-                            and d1.minute == d2.minute
-                            and d1.second == d2.second, msg+" Error the two dates differs : '"+str(d1)+"' '"+str(d2)+"'")
-
-    def assertEqualMlString(self, ms1, ms2, msg=""):
-        """ Compare two MlStrings """
-        ms1t = ms1.translations
-        ms2t = ms2.translations
-        self.assertEqual(set(name for name in ms1t), set(name for name in ms2t), msg+" The two MlString hasn't the same lang list")
-        for n in ms1t:
-            self.assertEqual(ms1t[n], ms2t[n])
-    '''
-    def run(self, result=None):
-        super(ComponentTestCase, self).run(result)
-    '''
-#=#############=#
-#  TESTS BEGIN  #
-#=#############=#
-
-
-#===========================#
-#   EmComponent.__init__    #
-#===========================#
-class TestInit(ComponentTestCase):
-
-    def test_component_abstract_init(self):
-        """ Test not valid call (from EmComponent) of __init__ """
-        with self.assertRaises(NotImplementedError):
-            test_comp = EmComponent(EmComponent, 2, 'testcomp')
-        with self.assertRaises(NotImplementedError):
-            test_comp = EmComponent(EmComponent, 2, 'name')
-
-    def test_component_init_not_exist(self):
-        """ Test __init__ with non existing objects """
-        self.assertFalse(EM_TEST_OBJECT.component(4096))
-
-        # with self.assertRaises(EmComponentNotExistError):
-        #     test_comp = EM_TEST_OBJECT.component(4096)
-
-        # TODO this assertion depends of the EmComponent behavior when instanciate with an ID
-        #with self.assertRaises(EmComponentNotExistError):
-        #    test_comp = EmTestComp(4096)
-
-    def test_component_init_uid(self):
-        """ Test __init__ with numerical ID """
-
-        for val in self.test_values:
-            test_comp = EM_TEST_OBJECT.create_component(EmClass.__name__, val)
-            self.assertIsInstance(test_comp, EmClass)
-            self.assertEqual(test_comp.uid, val['uid'])
-
-    def test_component_init_badargs(self):
-        for badarg in [ print, json, [], [1,2,3,4,5,6], {'hello': 'world'} ]:
-            if isinstance(badarg, list) or isinstance(badarg, dict):
-                with self.assertRaises(TypeError):
-                    EM_TEST_OBJECT.component(badarg)
-            else:
-                self.assertFalse(EM_TEST_OBJECT.component(badarg))
-
-
-#=======================#
-#   EmComponent.new_uid  #
-#=======================#
-# TODO A réimplémenter
-'''
-class TestUid(ComponentTestCase):
-
-
-   def test_newuid(self):
-        """ Test valid calls for new_uid method """
-        for _ in range(10):
-            nuid = EmTestComp.new_uid(self.dber)
-
-            conn = self.dber.connect()
-            tuid = sqla.Table('uids', sqlutils.meta(self.dber))
-            req = sqla.select([tuid]).where(tuid.c.uid == nuid)
-            rep = conn.execute(req)
-            res = rep.fetchall()
-
-            self.assertEqual(len(res), 1, "Error when selecting : mutliple rows returned for 1 UID")
-            res = res[0]
-            self.assertEqual(res.uid, nuid, "Selected UID didn't match created uid")
-            self.assertEqual(res.table, EmTestComp.table, "Table not match with class table : expected '"+res.table+"' but got '"+EmTestComp.table+"'")
-        pass
-
-    def test_newuid_abstract(self):
-        """ Test not valit call for new_uid method """
+        self.me =  Model(EmBackendJson('EditorialModel/test/me.json'))
+    
+    def test_init(self):
+        """ Testing that __init__ is abstract for an EmComponent """
         with self.assertRaises(NotImplementedError):
-            EmComponent.new_uid(self.dber)
-        pass
-'''
-
-
-#=======================#
-#   EmComponent.save    #
-#=======================#
-class TestSave(ComponentTestCase):
-
-    def _savecheck(self, test_comp, newval):
-        """ Utility function for test_component_save_namechange """
-        test_comp2 = EM_TEST_OBJECT.component(newval.uid)
-
-        # Check if properties other than date are equals in the instance fetched from the backend
-        self.check_equals(EmClass, newval, test_comp2, check_date=False)
-
-        #Check if the date_update has been updated
-        self.assertTrue(newval.date_update < test_comp2.date_update, "The updated date_update is more in past than its previous value : old date : '"+str(newval.date_update)+"' new date '"+str(test_comp2.date_update)+"'")
-
-        #Check if the date_create didn't change
-        self.assertEqualDatetime(newval.date_create, test_comp2.date_create)
-
-        #Check if the instance fecthed from Db and the one used to call save have the same properties
-        for prop in ['name', 'help', 'string', 'date_update', 'date_create', 'rank' ]:
-            if prop in ['string', 'help']:
-                assertion = self.assertEqualMlString
-            elif prop == 'date_create':
-                assertion = self.assertEqualDatetime
-            elif prop == 'date_update':
-                assertion = self.assertLess
-            else:
-                assertion = self.assertEqual
-
-            assertion(getattr(test_comp, prop), getattr(test_comp2, prop), "Save don't propagate modification properly. The '" + prop + "' property hasn't the exepted value in instance fetched from Backend : ")
-
-    @unittest.skip("Not implemented yet")
-    def test_component_save_setattr(self):
-        """ Checking save method after different changes using setattr """
-        val = self.test_values[0] # The component we will update
-        test_comp = EM_TEST_OBJECT.component(val['uid'])
-        self.check_equals(EmClass, val, test_comp)
-
-        newval = copy.copy(test_comp)
-        time.sleep(2)  # We have to sleep 2 secs here, so the update_date will be at least 2 secs more than newval.date_update
-
-        # name change
-        newval.name = test_comp.name = 'newname'
-        EM_TEST_OBJECT.save()
-        self._savecheck(test_comp, newval)
-        self.assertTrue(True)
-
-        #help change
-        newval.help = '{"fr": "help fr", "en":"help en", "es":"help es"}'
-        test_comp.help = MlString.load(newval.help)
-        EM_TEST_OBJECT.save()
-        self._savecheck(test_comp, newval)
-        self.assertTrue(True)
-
-        # string change
-        newval.string = '{"fr": "string fr", "en":"string en", "es":"string es"}'
-        test_comp.string = MlString.load(newval.string)
-        EM_TEST_OBJECT.save()
-        self._savecheck(EmClass, test_comp, newval)
-        self.assertTrue(True)
-
-        #no change
-        EM_TEST_OBJECT.save()
-        self._savecheck(EmClass, test_comp, newval)
-        self.assertTrue(True)
-
-        #change all
-        test_comp.name = newval.name = test_comp.name = 'newnewname'
-        newval.help = '{"fr": "help fra", "en":"help eng", "es":"help esp"}'
-        test_comp.help = MlString.load(newval.help)
-        newval.string = '{"fr": "string FR", "en":"string EN", "es":"string ES", "foolang":"foofoobar"}'
-        test_comp.string = MlString.load(newval.string)
-
-        EM_TEST_OBJECT.save()
-        self._savecheck(EmClass, test_comp, newval)
-        self.assertTrue(True)
-
-    @unittest.skip("Not implemented yet")
-    def test_component_save_illegalchanges(self):
-        """ checking that the save method forbids some changes """
-        val = self.test_values[1]
-        changes = {'date_create': datetime.datetime(1982,4,2,13,37), 'date_update': datetime.datetime(1982,4,22,13,43), 'rank': 42}
-
-        for prop in changes:
-            test_comp = EM_TEST_OBJECT.component(val['uid'])
-            self.check_equals(EmClass, val, test_comp, False)
-
-            # TODO La commande ne lève pas d'exception
-            #with self.assertRaises(TypeError):
-            setattr(test_comp, prop, changes[prop])
-
-
-            EM_TEST_OBJECT.save()
-
-            test_comp2 = EM_TEST_OBJECT.component(val['uid'])
-
-            if prop  == 'date_create':
-                assertion = self.assertEqualDatetime
-            elif prop == 'date_update':
-                continue
-            else: #rank
-                assertion = self.assertEqual
-
-            assertion(getattr(test_comp, prop), val[prop], "When using setattr the " + prop + " of a component is set : ")
-            assertion(getattr(test_comp2, prop), val[prop], "When using setattr and save the " + prop + " of a loaded component is set : ")
-
-
-#====================#
-# EmComponent.create #
-#====================#
-class TestCreate(ComponentTestCase):
-
-    def test_create(self):
-        """ Testing EmComponent.create() """
-        newuid = EM_TEST_OBJECT.new_uid()
-        vals = {'name': 'created1', 'classtype': 'entity', 'string': MlString({"fr": "testcomp"}), 'help_text': MlString({"en": "help test", "fr": "test help"})}
-        tc = EM_TEST_OBJECT.create_component(EmClass.__name__, vals)
-        self.check_equals(EmClass, vals, tc, "The created EmTestComp hasn't the good property values")
-
-'''
-#====================#
-# EmComponent.create #
-#====================#
-class TestCreate(ComponentTestCase):
-
-    def test_create(self):
-        """Testing EmComponent.create()"""
-        vals = {'name': 'created1', 'rank_fam': 'f', 'string': '{"fr":"testcomp"}', 'help': '{"en":"help test", "fr":"test help"}'}
-        tc = EmTestComp.create(**vals)
-        self.check_equals(vals, tc, "The created EmTestComp hasn't the good properties values")
-        tcdb = EmTestComp('created1')
-        self.check_equals(vals, tc, "When fetched from Db the created EmTestComp hasn't the good properties values")
-
-        # This test assume that string and help has default values
-        vals = { 'name': 'created2', 'rank_fam': 'f' }
-        tc = EmTestComp.create(**vals)
-        self.check_equals(vals, tc, "The created EmTestComp hasn't the good properties values")
-        tcdb = EmTestComp('created1')
-        self.check_equals(vals, tc, "When fetched from Db the created EmTestComp hasn't the good properties values")
-        pass
-
-    def test_create_badargs(self):
-        """Testing EmComponent.create() with bad arguments"""
-        with self.assertRaises(TypeError, msg="But given a function as argument"):
-            tc = EmTestComp.create(print)
-        with self.assertRaises(TypeError, msg="But values contains date_create and date_update"):
-            vals = { 'name': 'created1', 'rank_fam': 'f', 'string': '{"fr":"testcomp"}', 'help': '{"en" :"help test", "fr":"test help"}', 'rank': 6, 'date_create': 0 , 'date_update': 0 }
-            tc = EmTestComp.create(**vals)
-
-        with self.assertRaises(TypeError, msg="But no name was given"):
-            vals = { 'rank_fam': 'f', 'string': '{"fr":"testcomp"}', 'help': '{"en" :"help test", "fr":"test help"}', 'rank': 6, 'date_create': 0 , 'date_update': 0 }
-            tc = EmTestComp.create(**vals)
-        with self.assertRaises(TypeError, msg="But no rank_fam was given"):
-            vals = { 'name': 'created1', 'string': '{"fr":"testcomp"}', 'help': '{"en" :"help test", "fr":"test help"}', 'rank': 6, 'date_create': 0 , 'date_update': 0 }
-            tc = EmTestComp.create(**vals)
-        with self.assertRaises(TypeError, msg="But invalid keyword argument given"):
-            vals = {'invalid': 42, 'name': 'created1', 'rank_fam': 'f', 'string': '{"fr":"testcomp"}', 'help': '{"en":"help test", "fr":"test help"}'}
-            tc = EmTestComp.create(**vals)
-
-        pass
-
-    def test_create_existing_failure(self):
-        """ Testing that create fails when trying to create an EmComponent with an existing name but different properties """
-        vals = {'name': 'created1', 'rank_fam': 'f', 'string': '{"fr":"testcomp"}', 'help': '{"en":"help test", "fr":"test help"}'}
-        tc = EmTestComp.create(**vals)
-        with self.assertRaises(EmComponentExistError, msg="Should raise because attribute differs for a same name"):
-            vals['rank_fam'] = 'e'
-            EmTestComp.create(**vals)
-        pass
-
-    def test_create_existing(self):
-        """ Testing that create dont fails when trying to create twice the same EmComponent """
-        vals = {'name': 'created1', 'rank_fam': 'f', 'string': '{"fr":"testcomp"}', 'help': '{"en":"help test", "fr":"test help"}'}
-        tc = EmTestComp.create(**vals)
-        try:
-            tc2 = EmTestComp.create(**vals)
-        except EmComponentExistError as e:
-            self.fail("create raises but should return the existing EmComponent instance instead")
-        self.assertEqual(tc.uid, tc2.uid, "Created twice the same EmComponent")
-        pass
-
-    def testGetMaxRank(self):
-        old = EmTestComp._get_max_rank('f', self.dber)
-        EmTestComp.create(name="foobartest", rank_fam = 'f')
-        n = EmTestComp._get_max_rank('f', self.dber)
-        self.assertEqual(old+1, n, "Excepted value was "+str(old+1)+" but got "+str(n))
-        self.assertEqual(EmTestComp._get_max_rank('z', self.dber), -1)
-        pass
-
-#====================#
-# EmComponent.delete #
-#====================#
-class TestDelete(ComponentTestCase):
-
-    def test_delete(self):
-        """ Create and delete TestComponent """
-        vals = [
-            {'name': 'created1', 'rank_fam': 'f', 'string': '{"fr":"testcomp"}', 'help': '{"en":"help test", "fr":"test help"}'},
-            {'name': 'created2', 'rank_fam': 'f', 'string': '{"fr":"testcomp"}', 'help': '{"en":"help test", "fr":"test help"}'},
-            {'name': 'created3', 'rank_fam': 'f', 'string': '{"fr":"testcomp"}', 'help': '{"en":"help test", "fr":"test help"}'},
-        ]
-
-        tcomps = []
-
-        for val in vals:
-            tcomps.append(EmTestComp.create(**val))
-
-        failmsg = "This component should be deleted"
-
-        for i,tcv in enumerate(vals):
-            tc = EmTestComp(tcv['name'])
-            tc.delete()
-
-            with self.assertRaises(EmComponentNotExistError, msg = failmsg):
-                tc2 = EmTestComp(tcv['name'])
-
-            with self.assertRaises(EmComponentNotExistError, msg = failmsg):
-                tmp = tc.uid
-            with self.assertRaises(EmComponentNotExistError, msg = failmsg):
-                tmp = tc.__str__()
-            with self.assertRaises(EmComponentNotExistError, msg = failmsg):
-                tmp = tc.name
-            with self.assertRaises(EmComponentNotExistError, msg = failmsg):
-                print(tc)
-
-            for j in range(i+1,len(vals)):
-                try:
-                    tc = EmTestComp(vals[j]['name'])
-                except EmComponentNotExistError:
-                    self.fail('EmComponent should not be deleted')
-        self.assertTrue(True)
-        pass
-
-
-
-
-#===========================#
-# EmComponent.modify_rank   #
-#===========================#
-class TestModifyRank(ComponentTestCase):
-
-    def dump_ranks(self):
-        names = [ v['name'] for v in self.test_values ]
-        ranks=""
-        for i in range(len(names)):
-            tc = EmTestComp(names[i])
-            ranks += " "+str(tc.rank)
-        return ranks
-
-    def test_modify_rank_absolute(self):
-        """ Testing modify_rank with absolute rank """
-
-        names = [ v['name'] for v in self.test_values ]
-        nmax = len(names)-1
-
-        #moving first to 3
-        #-----------------
-        test_comp = EmTestComp(names[0])
-
-        test_comp.modify_rank(3, '=')
-        self.assertEqual(test_comp.rank, 3, "Called modify_rank(3, '=') but rank is '"+str(test_comp.rank)+"'. Ranks dump : "+self.dump_ranks())
-        tc2 = EmTestComp(names[0])
-        self.assertEqual(tc2.rank, 3, "Called modify_rank(3, '=') but rank is '"+str(tc2.rank)+"'. Ranks dump : "+self.dump_ranks())
-
-        for i in range(1,4):
-            test_comp = EmTestComp(names[i])
-            self.assertEqual(test_comp.rank, i-1, "Excepted rank was '"+str(i-1)+"' but found '"+str(test_comp.rank)+"'. Ranks dump : "+self.dump_ranks())
-
-        for i in [4,nmax]:
-            test_comp = EmTestComp(names[i])
-            self.assertEqual(test_comp.rank, i, "Rank wasn't excepted to change, but : previous value was '"+str(i)+"' current value is '"+str(test_comp.rank)+"'. Ranks dump : "+self.dump_ranks())
-
-        #undoing last rank change
-        test_comp = EmTestComp(names[0])
-        test_comp.modify_rank(0,'=')
-        self.assertEqual(test_comp.rank, 0)
-        tc2 = EmTestComp(names[0])
-        self.assertEqual(tc2.rank, 0)
-
-        #moving last to 2
-        #----------------
-        test_comp = EmTestComp(names[nmax])
-
-        test_comp.modify_rank(2, '=')
+            foo = EmComponent(self.me, self.me.new_uid(), 'invalid instanciation')
 
-        for i in [0,1]:
-            test_comp = EmTestComp(names[i])
-            self.assertEqual(test_comp.rank, i)
-        for i in range(3,nmax-1):
-            test_comp = EmTestComp(names[i])
-            self.assertEqual(test_comp.rank, i+1, "Excepted rank was '"+str(i+1)+"' but found '"+str(test_comp.rank)+"'. Ranks dump : "+self.dump_ranks())
+    def test_hashes(self):
+        """ Testing __hash__ and __eq__ methos """
+        me1 =  Model(EmBackendJson('EditorialModel/test/me.json'))
+        me2 =  Model(EmBackendJson('EditorialModel/test/me.json'), migration_handler = DummyMigrationHandler(True))
+        
+        for comp_class in [EmClass, EmType, EmField, EmFieldGroup]:
+            comp_l1 = me1.components(comp_class)
+            comp_l2 = me2.components(comp_class)
 
-        #undoing last rank change
-        test_comp = EmTestComp(names[nmax])
-        test_comp.modify_rank(nmax,'=')
-        self.assertEqual(test_comp.rank, nmax)
+            for i, comp1 in enumerate(comp_l1):
+                comp2 = comp_l2[i]
+                self.assertEqual(hash(comp1), hash(comp2), "hashes differs for two EmComponent({}) instanciated from the same backend and files".format(comp_class.__name__))
+                self.assertTrue(comp1 == comp2)
 
-        #Checking that we are in original state again
-        for i,name in enumerate(names):
-            test_comp = EmTestComp(name)
-            self.assertEqual(test_comp.rank, i, "Excepted rank was '"+str(i-1)+"' but found '"+str(test_comp.rank)+"'. Ranks dump : "+self.dump_ranks())
+                comp1.modify_rank(1)
 
-        #Inverting the list
-        #------------------
-        for i,name in enumerate(names):
-            test_comp = EmTestComp(name)
-            test_comp.modify_rank(0,'=')
-            self.assertEqual(test_comp.rank, 0)
-            for j in range(0,i+1):
-                test_comp = EmTestComp(names[j])
-                self.assertEqual(test_comp.rank, i-j)
-            for j in range(i+1,nmax+1):
-                test_comp = EmTestComp(names[j])
-                self.assertEqual(test_comp.rank, j)
-        pass
+                self.assertNotEqual(hash(comp1), hash(comp2), "hashes are the same after a modification of rank on one of the two components")
+                self.assertFalse(comp1 == comp2)
 
-    def test_modify_rank_relative(self):
-        """ Testing modify_rank with relative rank modifier """
-        names = [ v['name'] for v in self.test_values ]
-        nmax = len(names)-1
+                comp2.modify_rank(2)
+                self.assertEqual(hash(comp1), hash(comp2), "hashes differs for two EmComponent({}) after applying the same modifications on both".format(comp_class.__name__))
+                self.assertTrue(comp1 == comp2)
 
-        test_comp = EmTestComp(names[0])
-        #Running modify_rank(i,'+') and the modify_rank(i,'-') for i in range(1,nmax)
-        for i in range(1,nmax):
-            test_comp.modify_rank(i,'+')
-            self.assertEqual(test_comp.rank, i, "The instance (name="+names[0]+") on wich we applied the modify_rank doesn't have expected rank : expected '"+str(i)+"' but got '"+str(test_comp.rank)+"'")
-            test_comp2 = EmTestComp(names[0])
-            self.assertEqual(test_comp.rank, i, "The instance fetched in Db does'n't have expected rank : expected '"+str(i)+"' but got '"+str(test_comp.rank)+"'")
+    def test_modify_rank(self):
+        """ Testing modify_rank and set_rank method """
+        cls = self.me.classes()[0]
+        orig_rank = cls.rank
 
-            for j in range(1,i+1):
-                test_comp2 = EmTestComp(names[j])
-                self.assertEqual(test_comp2.rank, j-1, self.dump_ranks())
-            for j in range(i+1,nmax+1):
-                test_comp2 = EmTestComp(names[j])
-                self.assertEqual(test_comp2.rank, j, self.dump_ranks())
+        cls.modify_rank(1)
+        self.assertEqual(orig_rank, cls.rank - 1)
 
-            test_comp.modify_rank(i,'-')
-            self.assertEqual(test_comp.rank, 0, "The instance on wich we applied the modify_rank -"+str(i)+" doesn't have excepted rank : excepted '0' but got '"+str(test_comp.rank)+"'")
-            test_comp2 = EmTestComp(names[0])
-            self.assertEqual(test_comp.rank, 0, "The instance fetched in Db does'n't have expected rank : expected '0' but got '"+str(test_comp.rank)+"'"+self.dump_ranks())
+        cls.modify_rank(-1)
+        self.assertEqual(orig_rank, cls.rank)
 
-            for j in range(1,nmax+1):
-                test_comp2 = EmTestComp(names[j])
-                self.assertEqual(test_comp2.rank, j, self.dump_ranks())
+        cls.set_rank(1)
+        self.assertEqual(cls.rank, 1)
 
-        test_comp = EmTestComp(names[3])
-        test_comp.modify_rank(2,'+')
-        self.assertEqual(test_comp.rank, 5)
-        tc2 = EmTestComp(names[3])
-        self.assertEqual(tc2.rank,5)
-        for i in [4,5]:
-            tc2 = EmTestComp(names[i])
-            self.assertEqual(tc2.rank, i-1)
-        for i in range(0,3):
-            tc2 = EmTestComp(names[i])
-            self.assertEqual(tc2.rank, i)
+        cls.set_rank(2)
+        self.assertEqual(cls.rank, 2)
 
-        test_comp.modify_rank(2, '-')
-        self.assertEqual(test_comp.rank, 3)
-        for i in range(0,6):
-            tc2 = EmTestComp(names[i])
-            self.assertEqual(tc2.rank, i)
+        max_rank = cls.get_max_rank()
+        cls.set_rank(max_rank)
+        self.assertEqual(cls.rank, max_rank)
 
-        pass
+        with self.assertRaises(ValueError):
+            cls.modify_rank(1)
 
-    def test_modify_rank_badargs(self):
-        """ Testing modify_rank with bad arguments """
-        names = [ v['name'] for v in self.test_values ]
-        tc = EmTestComp(names[3])
+        with self.assertRaises(ValueError):
+            cls.modify_rank(-10)
 
-        badargs = [
-            #Bad types
-            (('0','+'), TypeError),
-            ((0, 43), TypeError),
-            ((print, '='), TypeError),
-            ((3, print), TypeError),
-            ((0.0, '='), TypeError),
+        with self.assertRaises(ValueError):
+            cls.set_rank(0)
 
-            #Bad new_rank
-            ((-1, '='), ValueError),
-            ((-1,), ValueError),
+        with self.assertRaises(ValueError):
+            cls.set_rank(10)
 
-            #Bad sign
-            ((2, 'a'), ValueError),
-            ((1, '=='), ValueError),
-            ((1, '+-'), ValueError),
-            ((1, 'Hello world !'), ValueError),
+        with self.assertRaises(ValueError):
+            cls.set_rank(-10)
 
-            #Out of bounds
-            ((42*10**9, '+'), ValueError),
-            ((-42*10**9, '+'), ValueError),
-            ((len(names), '+'), ValueError),
-            ((len(names), '-'), ValueError),
-            ((len(names), '='), ValueError),
-            ((4, '-'), ValueError),
-            ((3, '+'), ValueError),
-        ]
+    def test_check(self):
+        """ Testing check method """
+        cls = self.me.classes()[0]
+        cls.rank = 10000
 
-        for (args, err) in badargs:
-            with self.assertRaises(err, msg="Bad arguments supplied : "+str(args)+" for a component at rank 3 but no error raised"):
-                tc.modify_rank(*args)
-            self.assertEqual(tc.rank, 3, "The function raises an error but modify the rank")
-        pass
+        cls.check()
+        self.assertEqual(cls.rank, cls.get_max_rank())
 
+        cls.rank = -1000
+        cls.check()
+        self.assertEqual(cls.rank, 1)
 
-'''
+        

EditorialModel/test/test_model.py

@@ -0,0 +1,67 @@
+import unittest
+
+from EditorialModel.model import Model
+from EditorialModel.classes import EmClass
+from EditorialModel.types import EmType
+from EditorialModel.fieldgroups import EmFieldGroup
+from EditorialModel.fields import EmField
+
+from EditorialModel.backend.json_backend import EmBackendJson
+from EditorialModel.migrationhandler.dummy import DummyMigrationHandler
+
+class TestModel(unittest.TestCase):
+
+    def setUp(self):
+        self.me =  Model(EmBackendJson('EditorialModel/test/me.json'))
+
+    def test_init(self):
+        """ Instanciation test """
+        model = Model(EmBackendJson('EditorialModel/test/me.json'))
+        self.assertTrue(isinstance(model, Model))
+        model = Model(EmBackendJson('EditorialModel/test/me.json'), migration_handler = DummyMigrationHandler(True))
+
+        self.assertTrue(isinstance(model, Model))
+
+    def test_components(self):
+        """ Test components fetching """
+        for comp_class in [EmClass, EmType, EmField, EmFieldGroup]:
+            comp_l = self.me.components(comp_class)
+            for component in comp_l:
+                self.assertTrue(isinstance(component, comp_class), "Model.components method don't return EmComponent of the right type. Asked for {} but got {}".format(type(comp_class), type(component)))
+
+    def test_sort_components(self):
+        """ Test that Model.sort_components method actually sort components """
+        #disordering an EmClass
+        cl_l = self.me.components(EmClass)
+        last_class = cl_l[0]
+        last_class.rank = 10000
+        self.me.sort_components(EmClass)
+        self.assertEqual(self.me._components['EmClass'][-1].uid, last_class.uid, "The methode sort_components don't really sort by rank")
+
+    def test_new_uid(self):
+        """ Test that Model.new_uid return a new uniq uid """
+        new_uid = self.me.new_uid()
+        self.assertNotIn(new_uid, self.me._components['uids'].keys())
+
+    
+    def test_hash(self):
+        """ Test that __hash__ and __eq__ works properly on models """
+        me =  Model(EmBackendJson('EditorialModel/test/me.json'))
+        me2 =  Model(EmBackendJson('EditorialModel/test/me.json'), migration_handler = DummyMigrationHandler(True))
+
+        self.assertEqual(hash(me), hash(me2), "When instanciate from the same backend & file but with another migration handler the hashes differs")
+        self.assertTrue(me, me2)
+
+        cl_l = me.classes()
+        cl_l[0].modify_rank(1)
+
+        self.assertNotEqual(hash(me), hash(me2), "After a class rank modification the hashes are the same")
+        self.assertFalse(me, me2)
+
+        cl_l = me2.classes()
+        cl_l[0].modify_rank(1)
+
+        self.assertEqual(hash(me), hash(me2), "After doing sames modifications in the two models the hashes differs")
+        self.assertTrue(me, me2)
+
+