feat: add support for iterations API

7 files changed, 112 insertions, 0 deletions

diff --git a/docs/api-objects.rst b/docs/api-objects.rst
index 3754c25..3c76d77 100644
--- a/docs/api-objects.rst
+++ b/docs/api-objects.rst
@@ -28,6 +28,7 @@ API examples
    gl_objects/group_access_tokens
    gl_objects/invitations
    gl_objects/issues
+   gl_objects/iterations
    gl_objects/keys
    gl_objects/boards
    gl_objects/labels
diff --git a/docs/gl_objects/iterations.rst b/docs/gl_objects/iterations.rst
new file mode 100644
index 0000000..8db0c2e
--- /dev/null
+++ b/docs/gl_objects/iterations.rst
@@ -0,0 +1,33 @@
+##########
+Iterations
+##########
+
+
+Reference
+---------
+
+* v4 API:
+
+  + :class:`gitlab.v4.objects.GroupIteration`
+  + :class:`gitlab.v4.objects.GroupIterationManager`
+  + :attr:`gitlab.v4.objects.Group.iterations`
+  + :class:`gitlab.v4.objects.ProjectIterationManager`
+  + :attr:`gitlab.v4.objects.Project.iterations`
+
+* GitLab API: https://docs.gitlab.com/ee/api/iterations.html
+
+Examples
+--------
+
+.. note::
+
+    GitLab no longer has project iterations. Using a project endpoint returns
+    the ancestor groups' iterations. 
+
+List iterations for a project's ancestor groups::
+
+    iterations = project.iterations.list()
+
+List iterations for a group::
+
+    iterations = group.iterations.list()
diff --git a/gitlab/v4/objects/__init__.py b/gitlab/v4/objects/__init__.py
index 542fc30..1e374cd 100644
--- a/gitlab/v4/objects/__init__.py
+++ b/gitlab/v4/objects/__init__.py
@@ -47,6 +47,7 @@ from .hooks import *
 from .integrations import *
 from .invitations import *
 from .issues import *
+from .iterations import *
 from .jobs import *
 from .keys import *
 from .labels import *
diff --git a/gitlab/v4/objects/groups.py b/gitlab/v4/objects/groups.py
index 5b35e00..9a6c473 100644
--- a/gitlab/v4/objects/groups.py
+++ b/gitlab/v4/objects/groups.py
@@ -24,6 +24,7 @@ from .group_access_tokens import GroupAccessTokenManager  # noqa: F401
 from .hooks import GroupHookManager  # noqa: F401
 from .invitations import GroupInvitationManager  # noqa: F401
 from .issues import GroupIssueManager  # noqa: F401
+from .iterations import GroupIterationManager  # noqa: F401
 from .labels import GroupLabelManager  # noqa: F401
 from .members import (  # noqa: F401
     GroupBillableMemberManager,
@@ -71,6 +72,7 @@ class Group(SaveMixin, ObjectDeleteMixin, RESTObject):
     invitations: GroupInvitationManager
     issues: GroupIssueManager
     issues_statistics: GroupIssuesStatisticsManager
+    iterations: GroupIterationManager
     labels: GroupLabelManager
     members: GroupMemberManager
     members_all: GroupMemberAllManager
diff --git a/gitlab/v4/objects/iterations.py b/gitlab/v4/objects/iterations.py
new file mode 100644
index 0000000..30895ff
--- /dev/null
+++ b/gitlab/v4/objects/iterations.py
@@ -0,0 +1,26 @@
+from gitlab.base import RESTManager, RESTObject
+from gitlab.mixins import ListMixin
+
+__all__ = [
+    "ProjectIterationManager",
+    "GroupIteration",
+    "GroupIterationManager",
+]
+
+
+class GroupIteration(RESTObject):
+    _repr_attr = "title"
+
+
+class GroupIterationManager(ListMixin, RESTManager):
+    _path = "/groups/{group_id}/iterations"
+    _obj_cls = GroupIteration
+    _from_parent_attrs = {"group_id": "id"}
+    _list_filters = ("state", "search", "include_ancestors")
+
+
+class ProjectIterationManager(ListMixin, RESTManager):
+    _path = "/projects/{project_id}/iterations"
+    _obj_cls = GroupIteration
+    _from_parent_attrs = {"project_id": "id"}
+    _list_filters = ("state", "search", "include_ancestors")
diff --git a/gitlab/v4/objects/projects.py b/gitlab/v4/objects/projects.py
index e46e53d..803239f 100644
--- a/gitlab/v4/objects/projects.py
+++ b/gitlab/v4/objects/projects.py
@@ -57,6 +57,7 @@ from .hooks import ProjectHookManager  # noqa: F401
 from .integrations import ProjectIntegrationManager, ProjectServiceManager  # noqa: F401
 from .invitations import ProjectInvitationManager  # noqa: F401
 from .issues import ProjectIssueManager  # noqa: F401
+from .iterations import GroupIterationManager  # noqa: F401
 from .jobs import ProjectJobManager  # noqa: F401
 from .labels import ProjectLabelManager  # noqa: F401
 from .members import ProjectMemberAllManager, ProjectMemberManager  # noqa: F401
@@ -185,6 +186,7 @@ class Project(RefreshMixin, SaveMixin, ObjectDeleteMixin, RepositoryMixin, RESTO
     invitations: ProjectInvitationManager
     issues: ProjectIssueManager
     issues_statistics: ProjectIssuesStatisticsManager
+    iterations: GroupIterationManager
     jobs: ProjectJobManager
     keys: ProjectKeyManager
     labels: ProjectLabelManager
diff --git a/tests/unit/objects/test_iterations.py b/tests/unit/objects/test_iterations.py
new file mode 100644
index 0000000..0848691
--- /dev/null
+++ b/tests/unit/objects/test_iterations.py
@@ -0,0 +1,47 @@
+"""
+GitLab API: https://docs.gitlab.com/ee/api/iterations.html
+"""
+
+import re
+
+import pytest
+import responses
+
+iterations_content = [
+    {
+        "id": 53,
+        "iid": 13,
+        "group_id": 5,
+        "title": "Iteration II",
+        "description": "Ipsum Lorem ipsum",
+        "state": 2,
+        "created_at": "2020-01-27T05:07:12.573Z",
+        "updated_at": "2020-01-27T05:07:12.573Z",
+        "due_date": "2020-02-01",
+        "start_date": "2020-02-14",
+        "web_url": "http://gitlab.example.com/groups/my-group/-/iterations/13",
+    }
+]
+
+
+@pytest.fixture
+def resp_iterations_list():
+    with responses.RequestsMock() as rsps:
+        rsps.add(
+            method=responses.GET,
+            url=re.compile(r"http://localhost/api/v4/(groups|projects)/1/iterations"),
+            json=iterations_content,
+            content_type="application/json",
+            status=200,
+        )
+        yield rsps
+
+
+def test_list_group_iterations(group, resp_iterations_list):
+    iterations = group.iterations.list()
+    assert iterations[0].group_id == 5
+
+
+def test_list_project_iterations(project, resp_iterations_list):
+    iterations = project.iterations.list()
+    assert iterations[0].group_id == 5