test(backup): Add monitor tests

Issue: getsentry/team-ospo/#156

tests/sentry/backup/test_models.py

@@ -8,6 +8,8 @@
 from django.core.management import call_command
 
 from sentry.db.postgres.roles import in_test_psql_role_override
+from sentry.models.environment import Environment
+from sentry.monitors.models import Monitor, MonitorEnvironment, MonitorType, ScheduleType
 from sentry.runner.commands.backup import import_, validate
 from sentry.testutils import TransactionTestCase
 from tests.sentry.backup import ValidationError, tmp_export_to_file
@@ -57,6 +59,36 @@ def import_export_then_validate(self):
         if res.findings:
             raise ValidationError(res)
 
+    def create_monitor(self):
+        """Re-usable monitor object for test cases."""
+
+        user = self.create_user()
+        org = self.create_organization(owner=user)
+        project = self.create_project(organization=org)
+        return Monitor.objects.create(
+            organization_id=project.organization.id,
+            project_id=project.id,
+            type=MonitorType.CRON_JOB,
+            config={"schedule": "* * * * *", "schedule_type": ScheduleType.CRONTAB},
+        )
+
+    def test_environment(self):
+        self.create_environment()
+        self.import_export_then_validate()
+
+    def test_monitor(self):
+        self.create_monitor()
+        self.import_export_then_validate()
+
+    def test_monitor_environment(self):
+        monitor = self.create_monitor()
+        env = Environment.objects.create(organization_id=monitor.organization_id, name="test_env")
+        MonitorEnvironment.objects.create(
+            monitor=monitor,
+            environment=env,
+        )
+        self.import_export_then_validate()
+
     def test_organization(self):
         user = self.create_user()
         self.create_organization(owner=user)