Feat: add update and delete tribe to services

tests/unit/test_service.py

@@ -40,7 +40,7 @@ class FakeTribeRepository(AbstractRepository):
         try:
             self._tribes.pop(name)
         except KeyError:
-            raise KeyError(f"The tribe {tribe} does not exists")
+            raise TribeRepositoryError(f"The tribe {name} does not exists")
 
 
 class FakeStudentRepository(AbstractRepository):
@@ -140,3 +140,26 @@ def test_update_tribe_fail_not_exists():
         )
 
     assert conn.committed == False
+
+
+def test_delete_tribe():
+    tribes = build_tribes(3)
+    tribe_repo = FakeTribeRepository(tribes)
+    conn = FakeConn()
+
+    tribe = tribes.pop()
+    services.delete_tribe(name=tribe.name, tribe_repo=tribe_repo, conn=conn)
+
+    assert conn.committed == True
+    assert set(tribe_repo.list()) == set(tribes)
+
+
+def test_delete_tribe_fail_not_exists():
+    tribes = build_tribes(3)
+    tribe_repo = FakeTribeRepository(tribes)
+    conn = FakeConn()
+
+    with pytest.raises(TribeDosNotExists):
+        services.delete_tribe(name="azerty", tribe_repo=tribe_repo, conn=conn)
+
+    assert conn.committed == False