1 files changed, 132 insertions, 0 deletions
diff --git a/spec/features/projects/issuable_counts_caching_spec.rb b/spec/features/projects/issuable_counts_caching_spec.rb
new file mode 100644
index 00000000000..703d1cbd327
--- /dev/null
+++ b/spec/features/projects/issuable_counts_caching_spec.rb
@@ -0,0 +1,132 @@
+require 'spec_helper'
+
+describe 'Issuable counts caching', :use_clean_rails_memory_store_caching do
+  let!(:member) { create(:user) }
+  let!(:member_2) { create(:user) }
+  let!(:non_member) { create(:user) }
+  let!(:project) { create(:empty_project, :public) }
+  let!(:open_issue) { create(:issue, project: project) }
+  let!(:confidential_issue) { create(:issue, :confidential, project: project, author: non_member) }
+  let!(:closed_issue) { create(:issue, :closed, project: project) }
+
+  before do
+    project.add_developer(member)
+    project.add_developer(member_2)
+  end
+
+  it 'caches issuable counts correctly for non-members' do
+    # We can't use expect_any_instance_of because that uses a single instance.
+    counts = 0
+
+    allow_any_instance_of(IssuesFinder).to receive(:count_by_state).and_wrap_original do |m, *args|
+      counts += 1
+
+      m.call(*args)
+    end
+
+    aggregate_failures 'only counts once on first load with no params, and caches for later loads' do
+      expect { visit project_issues_path(project) }
+        .to change { counts }.by(1)
+
+      expect { visit project_issues_path(project) }
+        .not_to change { counts }
+    end
+
+    aggregate_failures 'uses counts from cache on load from non-member' do
+      sign_in(non_member)
+
+      expect { visit project_issues_path(project) }
+        .not_to change { counts }
+
+      sign_out(non_member)
+    end
+
+    aggregate_failures 'does not use the same cache for a member' do
+      sign_in(member)
+
+      expect { visit project_issues_path(project) }
+        .to change { counts }.by(1)
+
+      sign_out(member)
+    end
+
+    aggregate_failures 'uses the same cache for all members' do
+      sign_in(member_2)
+
+      expect { visit project_issues_path(project) }
+        .not_to change { counts }
+
+      sign_out(member_2)
+    end
+
+    aggregate_failures 'shares caches when params are passed' do
+      expect { visit project_issues_path(project, author_username: non_member.username) }
+        .to change { counts }.by(1)
+
+      sign_in(member)
+
+      expect { visit project_issues_path(project, author_username: non_member.username) }
+        .to change { counts }.by(1)
+
+      sign_in(non_member)
+
+      expect { visit project_issues_path(project, author_username: non_member.username) }
+        .not_to change { counts }
+
+      sign_in(member_2)
+
+      expect { visit project_issues_path(project, author_username: non_member.username) }
+        .not_to change { counts }
+
+      sign_out(member_2)
+    end
+
+    aggregate_failures 'resets caches on issue close' do
+      Issues::CloseService.new(project, member).execute(open_issue)
+
+      expect { visit project_issues_path(project) }
+        .to change { counts }.by(1)
+
+      sign_in(member)
+
+      expect { visit project_issues_path(project) }
+        .to change { counts }.by(1)
+
+      sign_in(non_member)
+
+      expect { visit project_issues_path(project) }
+        .not_to change { counts }
+
+      sign_in(member_2)
+
+      expect { visit project_issues_path(project) }
+        .not_to change { counts }
+
+      sign_out(member_2)
+    end
+
+    aggregate_failures 'does not reset caches on issue update' do
+      Issues::UpdateService.new(project, member, title: 'new title').execute(open_issue)
+
+      expect { visit project_issues_path(project) }
+        .not_to change { counts }
+
+      sign_in(member)
+
+      expect { visit project_issues_path(project) }
+        .not_to change { counts }
+
+      sign_in(non_member)
+
+      expect { visit project_issues_path(project) }
+        .not_to change { counts }
+
+      sign_in(member_2)
+
+      expect { visit project_issues_path(project) }
+        .not_to change { counts }
+
+      sign_out(member_2)
+    end
+  end
+end