Send emails for issues due tomorrow

Also, refactor the mail sending slightly: instead of one worker sending all
emails, create a worker per project with issues due, which will send all emails
for that project.

1 files changed, 21 insertions, 0 deletions

diff --git a/spec/workers/mail_scheduler/issue_due_worker_spec.rb b/spec/workers/mail_scheduler/issue_due_worker_spec.rb
new file mode 100644
index 00000000000..48ac1b8a1a4
--- /dev/null
+++ b/spec/workers/mail_scheduler/issue_due_worker_spec.rb
@@ -0,0 +1,21 @@
+require 'spec_helper'
+
+describe MailScheduler::IssueDueWorker do
+  describe '#perform' do
+    let(:worker) { described_class.new }
+    let(:project) { create(:project) }
+
+    it 'sends emails for open issues due tomorrow in the project specified' do
+      issue1 = create(:issue, :opened, project: project, due_date: Date.tomorrow)
+      issue2 = create(:issue, :opened, project: project, due_date: Date.tomorrow)
+      create(:issue, :closed, project: project, due_date: Date.tomorrow) # closed
+      create(:issue, :opened, project: project, due_date: 2.days.from_now) # due on another day
+      create(:issue, :opened, due_date: Date.tomorrow) # different project
+
+      expect_any_instance_of(NotificationService).to receive(:issue_due).with(issue1)
+      expect_any_instance_of(NotificationService).to receive(:issue_due).with(issue2)
+
+      worker.perform(project.id)
+    end
+  end
+end