Merge branch 'jramsay/filter-epics' into 'master'

Add created_at and updated_at filters to Epics API

Closes #11242

See merge request gitlab-org/gitlab-ee!11315

doc/api/epics.md

@@ -37,7 +37,7 @@ GET /groups/:id/epics?state=opened
 ```
 
 | Attribute           | Type             | Required   | Description                                                                                                                 |
-| ------------------- | ---------------- | ---------- | ---------------------------------------------------------------------------------------|
+| ------------------- | ---------------- | ---------- | --------------------------------------------------------------------------------------------------------------------------- |
 | `id`                | integer/string   | yes        | The ID or [URL-encoded path of the group](README.md#namespaced-path-encoding) owned by the authenticated user               |
 | `author_id`         | integer          | no         | Return epics created by the given user `id`                                                                                 |
 | `labels`            | string           | no         | Return epics matching a comma separated list of labels names. Label names from the epic group or a parent group can be used |
@@ -45,6 +45,10 @@ GET /groups/:id/epics?state=opened
 | `sort`              | string           | no         | Return epics sorted in `asc` or `desc` order. Default is `desc`                                                             |
 | `search`            | string           | no         | Search epics against their `title` and `description`                                                                        |
 | `state`             | string           | no         | Search epics against their `state`, possible filters: `opened`, `closed` and `all`, default: `all`                          |
+| `created_after`     | datetime         | no         | Return epics created on or after the given time                                                                             |
+| `created_before`    | datetime         | no         | Return epics created on or before the given time                                                                            |
+| `updated_after`     | datetime         | no         | Return epics updated on or after the given time                                                                             |
+| `updated_before`    | datetime         | no         | Return epics updated on or before the given time                                                                            |
 
 ```bash
 curl --header "PRIVATE-TOKEN: <your_access_token>" https://gitlab.example.com/api/v4/groups/1/epics

ee/app/finders/epics_finder.rb

@@ -26,6 +26,7 @@ class EpicsFinder < IssuableFinder
 
     items = init_collection
     items = by_created_at(items)
+    items = by_updated_at(items)
     items = by_search(items)
     items = by_author(items)
     items = by_timeframe(items)

ee/changelogs/unreleased/jramsay-filter-epics.yml

+---
+title: Add created_at and updated_at filters to Epics API
+merge_request: 11315
+author: jramsay
+type: added

ee/lib/api/epics.rb

@@ -30,6 +30,10 @@ module API
                          desc: 'Return opened, closed, or all epics'
         optional :author_id, type: Integer, desc: 'Return epics which are authored by the user with the given ID'
         optional :labels, type: Array[String], coerce_with: Validations::Types::LabelsList.coerce, desc: 'Comma-separated list of label names'
+        optional :created_after, type: DateTime, desc: 'Return epics created after the specified time'
+        optional :created_before, type: DateTime, desc: 'Return epics created before the specified time'
+        optional :updated_after, type: DateTime, desc: 'Return epics updated after the specified time'
+        optional :updated_before, type: DateTime, desc: 'Return epics updated before the specified time'
         use :pagination
       end
       get ':id/(-/)epics' do

ee/spec/requests/api/epics_spec.rb

@@ -308,6 +308,46 @@ describe API::Epics do
       it_behaves_like 'can admin epics'
     end
 
+    context 'filtering before a specific date' do
+      let!(:epic) { create(:epic, group: group, created_at: Date.new(2000, 1, 1), updated_at: Date.new(2000, 1, 1)) }
+
+      before do
+        stub_licensed_features(epics: true)
+      end
+
+      it 'returns epics created before a specific date' do
+        get api(url, user), params: { created_before: '2000-01-02T00:00:00.060Z' }
+
+        expect_paginated_array_response(epic.id)
+      end
+
+      it 'returns epics updated before a specific date' do
+        get api(url, user), params: { updated_before: '2000-01-02T00:00:00.060Z' }
+
+        expect_paginated_array_response(epic.id)
+      end
+    end
+
+    context 'filtering after a specific date' do
+      let!(:epic) { create(:epic, group: group, created_at: 1.week.from_now, updated_at: 1.week.from_now) }
+
+      before do
+        stub_licensed_features(epics: true)
+      end
+
+      it 'returns epics created after a specific date' do
+        get api(url, user), params: { created_after: epic.created_at }
+
+        expect_paginated_array_response(epic.id)
+      end
+
+      it 'returns epics updated after a specific date' do
+        get api(url, user), params: { updated_after: epic.updated_at }
+
+        expect_paginated_array_response(epic.id)
+      end
+    end
+
     context 'with pagination params' do
       let(:page) { 1 }
       let(:per_page) { 2 }