Correctly recover id when closing VMS

Fixes #91

tests/modules/test_project.py

@@ -37,8 +37,9 @@ def manager(port_manager):
 
 
 @pytest.fixture(scope="function")
-def vm(project, manager):
-    return VPCSVM("test", "00010203-0405-0607-0809-0a0b0c0d0e0f", project, manager)
+def vm(project, manager, loop):
+    vm = manager.create_vm("test", project.id, "00010203-0405-0607-0809-0a0b0c0d0e0f")
+    return loop.run_until_complete(asyncio.async(vm))
 
 
 def test_affect_uuid():
@@ -180,11 +181,8 @@ def test_project_add_vm(manager):
     assert len(project.vms) == 1
 
 
-def test_project_close(loop, manager):
-    project = Project()
-    vm = VPCSVM("test", "00010203-0405-0607-0809-0a0b0c0d0e0f", project, manager)
-    project.add_vm(vm)
-    vm.manager._vms = {vm.id: vm}
+def test_project_close(loop, vm, project):
+
     with asyncio_patch("gns3server.modules.vpcs.vpcs_vm.VPCSVM.close") as mock:
         loop.run_until_complete(asyncio.async(project.close()))
         assert mock.called