Revert "Merge branch 'iterations_add_daterange_constraint' into 'master'"

This reverts merge request !32335

changelogs/unreleased/iterations_add_daterange_constraint.yml

----
-title: Add btree_gist PGSQL extension and add DB constraints for Iteration date ranges
-merge_request: 32335
-author:
-type: added

db/migrate/20200515152649_enable_btree_gist_extension.rb

-# frozen_string_literal: true
-
-class EnableBtreeGistExtension < ActiveRecord::Migration[6.0]
-  DOWNTIME = false
-
-  def up
-    execute 'CREATE EXTENSION IF NOT EXISTS btree_gist'
-  end
-
-  def down
-    execute 'DROP EXTENSION IF EXISTS btree_gist'
-  end
-end

db/migrate/20200515153633_iteration_date_range_constraint.rb

-# frozen_string_literal: true
-
-class IterationDateRangeConstraint < ActiveRecord::Migration[6.0]
-  DOWNTIME = false
-
-  def up
-    execute <<~SQL
-      ALTER TABLE sprints
-        ADD CONSTRAINT iteration_start_and_due_daterange_project_id_constraint
-        EXCLUDE USING gist
-        ( project_id WITH =,
-          daterange(start_date, due_date, '[]') WITH &&
-        )
-        WHERE (project_id IS NOT NULL)
-    SQL
-
-    execute <<~SQL
-      ALTER TABLE sprints
-        ADD CONSTRAINT iteration_start_and_due_daterange_group_id_constraint
-        EXCLUDE USING gist
-        ( group_id WITH =,
-          daterange(start_date, due_date, '[]') WITH &&
-        )
-        WHERE (group_id IS NOT NULL)
-    SQL
-  end
-
-  def down
-    execute <<~SQL
-      ALTER TABLE sprints
-        DROP CONSTRAINT IF EXISTS iteration_start_and_due_daterange_project_id_constraint
-    SQL
-
-    execute <<~SQL
-      ALTER TABLE sprints
-        DROP CONSTRAINT IF EXISTS iteration_start_and_due_daterange_group_id_constraint
-    SQL
-  end
-end

db/structure.sql

@@ -2,8 +2,6 @@ SET search_path=public;
 
 CREATE EXTENSION IF NOT EXISTS plpgsql WITH SCHEMA pg_catalog;
 
-CREATE EXTENSION IF NOT EXISTS btree_gist WITH SCHEMA public;
-
 CREATE EXTENSION IF NOT EXISTS pg_trgm WITH SCHEMA public;
 
 CREATE TABLE public.abuse_reports (
@@ -8428,12 +8426,6 @@ ALTER TABLE ONLY public.issue_user_mentions
 ALTER TABLE ONLY public.issues
     ADD CONSTRAINT issues_pkey PRIMARY KEY (id);
 
-ALTER TABLE ONLY public.sprints
-    ADD CONSTRAINT iteration_start_and_due_daterange_group_id_constraint EXCLUDE USING gist (group_id WITH =, daterange(start_date, due_date, '[]'::text) WITH &&) WHERE ((group_id IS NOT NULL));
-
-ALTER TABLE ONLY public.sprints
-    ADD CONSTRAINT iteration_start_and_due_daterange_project_id_constraint EXCLUDE USING gist (project_id WITH =, daterange(start_date, due_date, '[]'::text) WITH &&) WHERE ((project_id IS NOT NULL));
-
 ALTER TABLE ONLY public.jira_connect_installations
     ADD CONSTRAINT jira_connect_installations_pkey PRIMARY KEY (id);
 
@@ -13957,8 +13949,6 @@ COPY "schema_migrations" (version) FROM STDIN;
 20200514000009
 20200514000132
 20200514000340
-20200515152649
-20200515153633
 20200515155620
 20200519115908
 20200519171058

spec/models/iteration_spec.rb

@@ -46,10 +46,7 @@ describe Iteration do
       end
 
       context 'when dates overlap' do
-        let(:start_date) { 5.days.from_now }
-        let(:due_date) { 6.days.from_now }
-
-        shared_examples_for 'overlapping dates' do
+        context 'same group' do
           context 'when start_date is in range' do
             let(:start_date) { 5.days.from_now }
             let(:due_date) { 3.weeks.from_now }
@@ -58,11 +55,6 @@ describe Iteration do
               expect(subject).not_to be_valid
               expect(subject.errors[:base]).to include('Dates cannot overlap with other existing Iterations')
             end
-
-            it 'is not valid even if forced' do
-              subject.validate # to generate iid/etc
-              expect { subject.save(validate: false) }.to raise_exception(ActiveRecord::StatementInvalid, /#{constraint_name}/)
-            end
           end
 
           context 'when end_date is in range' do
@@ -73,84 +65,25 @@ describe Iteration do
               expect(subject).not_to be_valid
               expect(subject.errors[:base]).to include('Dates cannot overlap with other existing Iterations')
             end
-
-            it 'is not valid even if forced' do
-              subject.validate # to generate iid/etc
-              expect { subject.save(validate: false) }.to raise_exception(ActiveRecord::StatementInvalid, /#{constraint_name}/)
-            end
           end
 
           context 'when both overlap' do
+            let(:start_date) { 5.days.from_now }
+            let(:due_date) { 6.days.from_now }
+
             it 'is not valid' do
               expect(subject).not_to be_valid
               expect(subject.errors[:base]).to include('Dates cannot overlap with other existing Iterations')
             end
-
-            it 'is not valid even if forced' do
-              subject.validate # to generate iid/etc
-              expect { subject.save(validate: false) }.to raise_exception(ActiveRecord::StatementInvalid, /#{constraint_name}/)
-            end
           end
         end
 
-        context 'group' do
-          it_behaves_like 'overlapping dates' do
-            let(:constraint_name) { 'iteration_start_and_due_daterange_group_id_constraint' }
-          end
-
-          context 'different group' do
-            let(:group) { create(:group) }
-
-            it { is_expected.to be_valid }
-
-            it 'does not trigger exclusion constraints' do
-              expect { subject.save }.not_to raise_exception
-            end
-          end
-
-          context 'in a project' do
-            let(:project) { create(:project) }
-
-            subject { build(:iteration, project: project, start_date: start_date, due_date: due_date) }
-
-            it { is_expected.to be_valid }
+        context 'different group' do
+          let(:start_date) { 5.days.from_now }
+          let(:due_date) { 6.days.from_now }
+          let(:group) { create(:group) }
 
-            it 'does not trigger exclusion constraints' do
-              expect { subject.save }.not_to raise_exception
-            end
-          end
-        end
-
-        context 'project' do
-          let_it_be(:existing_iteration) { create(:iteration, project: project, start_date: 4.days.from_now, due_date: 1.week.from_now) }
-
-          subject { build(:iteration, project: project, start_date: start_date, due_date: due_date) }
-
-          it_behaves_like 'overlapping dates' do
-            let(:constraint_name) { 'iteration_start_and_due_daterange_project_id_constraint' }
-          end
-
-          context 'different project' do
-            let(:project) { create(:project) }
-
-            it { is_expected.to be_valid }
-
-            it 'does not trigger exclusion constraints' do
-              expect { subject.save }.not_to raise_exception
-            end
-          end
-
-          context 'in a group' do
-            let(:group) { create(:group) }
-
-            subject { build(:iteration, group: group, start_date: start_date, due_date: due_date) }
-
-            it { is_expected.to be_valid }
-
-            it 'does not trigger exclusion constraints' do
-              expect { subject.save }.not_to raise_exception
-            end
-          end
+          it { is_expected.to be_valid }
         end
       end
     end