Issue export CSV includes "Locked"

doc/user/project/issues/csv_export.md

@@ -40,7 +40,7 @@ You will be asked to confirm the number of issues and email address for the expo
 
 > **Time Estimate** and **Time Spent** columns were [introduced](https://gitlab.com/gitlab-org/gitlab-ee/merge_requests/2627) in GitLab Starter 10.0.
 >
-> The **Weight** column was [introduced](https://gitlab.com/gitlab-org/gitlab-ee/merge_requests/5300) in GitLab Starter 10.8.
+> **Weight** and **Locked** columns were [introduced](https://gitlab.com/gitlab-org/gitlab-ee/merge_requests/5300) in GitLab Starter 10.8.
 
 Data will be encoded with a comma as the column delimiter, with `"` used to quote fields if needed, and newlines to separate rows. The first row will be the headers, which are listed in the following table along with a description of the values:
 
@@ -57,6 +57,7 @@ Data will be encoded with a comma as the column delimiter, with `"` used to quot
 | Assignee | Full name of the issue assignee |
 | Assignee Username | Username of the author, with the `@` symbol omitted |
 | Confidential | `Yes` or `No` |
+| Locked | `Yes` or `No` |
 | Due Date | Formated as `YYYY-MM-DD` |
 | Created At (UTC) | Formated as `YYYY-MM-DD HH:MM:SS` |
 | Updated At (UTC) | Formated as `YYYY-MM-DD HH:MM:SS` |

ee/app/services/issues/export_csv_service.rb

@@ -38,6 +38,7 @@ module Issues
        'Assignee' => -> (issue) { issue.assignees.map(&:name).join(', ') },
        'Assignee Username' => -> (issue) { issue.assignees.map(&:username).join(', ') },
        'Confidential' => -> (issue) { issue.confidential? ? 'Yes' : 'No' },
+       'Locked' => -> (issue) { issue.discussion_locked? ? 'Yes' : 'No' },
        'Due Date' => -> (issue) { issue.due_date&.to_s(:csv) },
        'Created At (UTC)' => -> (issue) { issue.created_at&.to_s(:csv) },
        'Updated At (UTC)' => -> (issue) { issue.updated_at&.to_s(:csv) },

ee/changelogs/unreleased/jej-add-weight-to-csv-export.yml

 ---
-title: Issues export CSV includes issue weight
+title: Issues export CSV includes 'Weight' and 'Locked'
 merge_request: 5300
 author:
 type: changed

ee/spec/services/issues/export_csv_service_spec.rb

@@ -42,6 +42,7 @@ describe Issues::ExportCsvService do
                     updated_at: DateTime.new(2016, 5, 4, 3, 2, 1),
                     closed_at: DateTime.new(2017, 6, 5, 4, 3, 2),
                     weight: 4,
+                    discussion_locked: true,
                     labels: [feature_label, idea_label],
                     time_estimate: 72000)
       issue.timelogs.create(time_spent: 360, user: user)
@@ -119,6 +120,10 @@ describe Issues::ExportCsvService do
       expect(csv[1]['Closed At (UTC)']).to eq nil
     end
 
+    specify 'discussion_locked' do
+      expect(csv[0]['Locked']).to eq 'Yes'
+    end
+
     specify 'weight' do
       expect(csv[0]['Weight']).to eq '4'
     end