Merge branch 'fix/label-filters' into 'master'

Filter labels by including ALL filter titles

Fixed query to use `AND` and not `OR`. Refactored relevant specs

See merge request !3815

app/finders/issuable_finder.rb

@@ -272,7 +272,6 @@ class IssuableFinder
         items = items.without_label
       else
         items = items.with_label(label_names)
-
         if projects
           items = items.where(labels: { project_id: projects })
         end
@@ -321,7 +320,7 @@ class IssuableFinder
   end
 
   def label_names
-    params[:label_name].split(',')
+    params[:label_name].is_a?(String) ? params[:label_name].split(',') : params[:label_name]
   end
 
   def current_user_related?

app/models/concerns/issuable.rb

@@ -37,7 +37,6 @@ module Issuable
     scope :closed, -> { with_state(:closed) }
     scope :order_milestone_due_desc, -> { joins(:milestone).reorder('milestones.due_date DESC, milestones.id DESC') }
     scope :order_milestone_due_asc, -> { joins(:milestone).reorder('milestones.due_date ASC, milestones.id ASC') }
-    scope :with_label, ->(title) { joins(:labels).where(labels: { title: title }) }
     scope :without_label, -> { joins("LEFT OUTER JOIN label_links ON label_links.target_type = '#{name}' AND label_links.target_id = #{table_name}.id").where(label_links: { id: nil }) }
 
     scope :join_project, -> { joins(:project) }
@@ -122,6 +121,14 @@ module Issuable
 
       joins(join_clause).group(issuable_table[:id]).reorder("COUNT(notes.id) DESC")
     end
+
+    def with_label(title)
+      if title.is_a?(Array) && title.count > 1
+        joins(:labels).where(labels: { title: title }).group('issues.id').having("count(distinct labels.title) = #{title.count}")
+      else
+        joins(:labels).where(labels: { title: title })
+      end
+    end
   end
 
   def today?

spec/features/issues/filter_by_labels_spec.rb

 require 'rails_helper'
 
 feature 'Issue filtering by Labels', feature: true do
+  include WaitForAjax
+
   let(:project) { create(:project, :public) }
   let!(:user)   { create(:user)}
   let!(:label)  { create(:label, project: project) }
 
   before do
-    ['bug', 'feature', 'enhancement'].each do |title|
-      create(:label,
-             project: project,
-             title: title)
-    end
+    bug = create(:label, project: project, title: 'bug')
+    feature = create(:label, project: project, title: 'feature')
+    enhancement = create(:label, project: project, title: 'enhancement')
 
     issue1 = create(:issue, title: "Bugfix1", project: project)
-    issue1.labels << project.labels.find_by(title: 'bug')
+    issue1.labels << bug
 
     issue2 = create(:issue, title: "Bugfix2", project: project)
-    issue2.labels << project.labels.find_by(title: 'bug')
-    issue2.labels << project.labels.find_by(title: 'enhancement')
+    issue2.labels << bug
+    issue2.labels << enhancement
 
     issue3 = create(:issue, title: "Feature1", project: project)
-    issue3.labels << project.labels.find_by(title: 'feature')
+    issue3.labels << feature
 
     project.team << [user, :master]
     login_as(user)
@@ -31,10 +31,10 @@ feature 'Issue filtering by Labels', feature: true do
   context 'filter by label bug', js: true do
     before do
       page.find('.js-label-select').click
-      sleep 0.5
+      wait_for_ajax
       execute_script("$('.dropdown-menu-labels li:contains(\"bug\") a').click()")
       page.first('.labels-filter .dropdown-title .dropdown-menu-close-icon').click
-      sleep 2
+      wait_for_ajax
     end
 
     it 'should show issue "Bugfix1" and "Bugfix2" in issues list' do
@@ -59,10 +59,10 @@ feature 'Issue filtering by Labels', feature: true do
   context 'filter by label feature', js: true do
     before do
       page.find('.js-label-select').click
-      sleep 0.5
+      wait_for_ajax
       execute_script("$('.dropdown-menu-labels li:contains(\"feature\") a').click()")
       page.first('.labels-filter .dropdown-title .dropdown-menu-close-icon').click
-      sleep 2
+      wait_for_ajax
     end
 
     it 'should show issue "Feature1" in issues list' do
@@ -87,10 +87,10 @@ feature 'Issue filtering by Labels', feature: true do
   context 'filter by label enhancement', js: true do
     before do
       page.find('.js-label-select').click
-      sleep 0.5
+      wait_for_ajax
       execute_script("$('.dropdown-menu-labels li:contains(\"enhancement\") a').click()")
       page.first('.labels-filter .dropdown-title .dropdown-menu-close-icon').click
-      sleep 2
+      wait_for_ajax
     end
 
     it 'should show issue "Bugfix2" in issues list' do
@@ -115,20 +115,16 @@ feature 'Issue filtering by Labels', feature: true do
   context 'filter by label enhancement or feature', js: true do
     before do
       page.find('.js-label-select').click
-      sleep 0.5
+      wait_for_ajax
       execute_script("$('.dropdown-menu-labels li:contains(\"enhancement\") a').click()")
       execute_script("$('.dropdown-menu-labels li:contains(\"feature\") a').click()")
       page.first('.labels-filter .dropdown-title .dropdown-menu-close-icon').click
-      sleep 2
+      wait_for_ajax
     end
 
-    it 'should show issue "Bugfix2" or "Feature1" in issues list' do
-      expect(page).to have_content "Bugfix2"
-      expect(page).to have_content "Feature1"
-    end
-
-    it 'should not show "Bugfix1" in issues list' do
+    it 'should not show "Bugfix1" or "Feature1" in issues list' do
       expect(page).not_to have_content "Bugfix1"
+      expect(page).not_to have_content "Feature1"
     end
 
     it 'should show label "enhancement" and "feature" in filtered-labels' do
@@ -141,19 +137,18 @@ feature 'Issue filtering by Labels', feature: true do
     end
   end
 
-  context 'filter by label enhancement or bug in issues list', js: true do
+  context 'filter by label enhancement and bug in issues list', js: true do
     before do
       page.find('.js-label-select').click
-      sleep 0.5
+      wait_for_ajax
       execute_script("$('.dropdown-menu-labels li:contains(\"enhancement\") a').click()")
       execute_script("$('.dropdown-menu-labels li:contains(\"bug\") a').click()")
       page.first('.labels-filter .dropdown-title .dropdown-menu-close-icon').click
-      sleep 2
+      wait_for_ajax
     end
 
-    it 'should show issue "Bugfix2" or "Bugfix1" in issues list' do
+    it 'should show issue "Bugfix2" in issues list' do
       expect(page).to have_content "Bugfix2"
-      expect(page).to have_content "Bugfix1"
     end
 
     it 'should not show "Feature1"' do

spec/models/concerns/issuable_spec.rb

@@ -212,4 +212,34 @@ describe Issue, "Issuable" do
       expect(issue.downvotes).to eq(1)
     end
   end
+
+  describe ".with_label" do
+    let(:project) { create(:project, :public) }
+    let(:bug) { create(:label, project: project, title: 'bug') }
+    let(:feature) { create(:label, project: project, title: 'feature') }
+    let(:enhancement) { create(:label, project: project, title: 'enhancement') }
+    let(:issue1) { create(:issue, title: "Bugfix1", project: project) }
+    let(:issue2) { create(:issue, title: "Bugfix2", project: project) }
+    let(:issue3) { create(:issue, title: "Feature1", project: project) }
+
+    before(:each) do
+      issue1.labels << bug
+      issue1.labels << feature
+      issue2.labels << bug
+      issue2.labels << enhancement
+      issue3.labels << feature
+    end
+
+    it 'finds the correct issue containing just enhancement label' do
+      expect(Issue.with_label(enhancement.title)).to match_array([issue2])
+    end
+
+    it 'finds the correct issues containing the same label' do
+      expect(Issue.with_label(bug.title)).to match_array([issue1, issue2])
+    end
+
+    it 'finds the correct issues containing only both labels' do
+      expect(Issue.with_label([bug.title, enhancement.title])).to match_array([issue2])
+    end
+  end
 end