test: add unit tests for resource milestone events API

Fixes #1154

gitlab/tests/objects/test_resource_milestone_events.py

@@ -0,0 +1,73 @@
+"""
+GitLab API: https://docs.gitlab.com/ee/api/resource_milestone_events.html
+"""
+
+import pytest
+import responses
+
+from gitlab.v4.objects import (
+    ProjectIssueResourceMilestoneEvent,
+    ProjectMergeRequestResourceMilestoneEvent,
+)
+
+
+@pytest.fixture()
+def resp_merge_request_milestone_events():
+    mr_content = {"iid": 1}
+    events_content = {"id": 1, "resource_type": "MergeRequest"}
+    with responses.RequestsMock() as rsps:
+        rsps.add(
+            method=responses.GET,
+            url="http://localhost/api/v4/projects/1/merge_requests",
+            json=[mr_content],
+            content_type="application/json",
+            status=200,
+        )
+        rsps.add(
+            method=responses.GET,
+            url="http://localhost/api/v4/projects/1/merge_requests/1/resource_milestone_events",
+            json=[events_content],
+            content_type="application/json",
+            status=200,
+        )
+        yield rsps
+
+
+@pytest.fixture()
+def resp_project_issue_milestone_events():
+    issue_content = {"iid": 1}
+    events_content = {"id": 1, "resource_type": "Issue"}
+    with responses.RequestsMock() as rsps:
+        rsps.add(
+            method=responses.GET,
+            url="http://localhost/api/v4/projects/1/issues",
+            json=[issue_content],
+            content_type="application/json",
+            status=200,
+        )
+        rsps.add(
+            method=responses.GET,
+            url="http://localhost/api/v4/projects/1/issues/1/resource_milestone_events",
+            json=[events_content],
+            content_type="application/json",
+            status=200,
+        )
+        yield rsps
+
+
+def test_project_issue_milestone_events(project, resp_project_issue_milestone_events):
+    issue = project.issues.list()[0]
+    milestone_events = issue.resourcemilestoneevents.list()
+    assert isinstance(milestone_events, list)
+    milestone_event = milestone_events[0]
+    assert isinstance(milestone_event, ProjectIssueResourceMilestoneEvent)
+    assert milestone_event.resource_type == "Issue"
+
+
+def test_merge_request_milestone_events(project, resp_merge_request_milestone_events):
+    mr = project.mergerequests.list()[0]
+    milestone_events = mr.resourcemilestoneevents.list()
+    assert isinstance(milestone_events, list)
+    milestone_event = milestone_events[0]
+    assert isinstance(milestone_event, ProjectMergeRequestResourceMilestoneEvent)
+    assert milestone_event.resource_type == "MergeRequest"