Properly handle APIError failures in Project.up

Signed-off-by: Joffrey F <joffrey@docker.com>

tests/integration/project_test.py

@@ -19,6 +19,7 @@ from compose.const import LABEL_PROJECT
 from compose.const import LABEL_SERVICE
 from compose.container import Container
 from compose.project import Project
+from compose.project import ProjectError
 from compose.service import ConvergenceStrategy
 from tests.integration.testcases import v2_only
 
@@ -752,7 +753,8 @@ class ProjectTest(DockerClientTestCase):
             config_data=config_data,
         )
 
-        assert len(project.up()) == 0
+        with self.assertRaises(ProjectError):
+            project.up()
 
     @v2_only()
     def test_project_up_volumes(self):

tests/unit/parallel_test.py

@@ -29,7 +29,7 @@ def get_deps(obj):
 
 
 def test_parallel_execute():
-    results = parallel_execute(
+    results, errors = parallel_execute(
         objects=[1, 2, 3, 4, 5],
         func=lambda x: x * 2,
         get_name=six.text_type,
@@ -37,6 +37,7 @@ def test_parallel_execute():
     )
 
     assert sorted(results) == [2, 4, 6, 8, 10]
+    assert errors == {}
 
 
 def test_parallel_execute_with_deps():