Add tests for volunteer birthday notifications

spec/lib/tasks/volunteer_birthday_reminder_spec.rb

@@ -0,0 +1,69 @@
+require "rails_helper"
+require "rake"
+Rake.application.rake_require "tasks/volunteer_birthday_reminder"
+
+RSpec.describe "lib/tasks/volunteer_birthday_reminder.rake" do
+  let(:rake_task) { Rake::Task["volunteer_birthday_reminder"].invoke }
+
+  before do
+    Rake::Task.clear
+    Casa::Application.load_tasks
+
+    travel_to Date.new(2022, 10, 1)
+  end
+
+  after do
+    travel_back
+  end
+
+  context "there is a volunteer with a birthday next month" do
+    let!(:volunteer) do
+      create(:volunteer, :with_assigned_supervisor, date_of_birth: Date.new(1988, 11, 30))
+    end
+
+    it "creates a notification" do
+      expect { rake_task }.to change { volunteer.supervisor.notifications.count }.by(1)
+    end
+  end
+
+  context "there are many volunteers with birthdays next month" do
+    volunteer_count = 10
+    let!(:volunteer) do
+      create_list(:volunteer, volunteer_count, :with_assigned_supervisor, date_of_birth: Date.new(1988, 11, 30))
+    end
+
+    it "creates many notifications" do
+      expect { rake_task }.to change { Notification.count }.by(volunteer_count)
+    end
+  end
+
+  context "there is an unsupervised volunteer with a birthday next month" do
+    let!(:volunteer) do
+      create(:volunteer, date_of_birth: Date.new(1988, 11, 30))
+    end
+
+    it "does not create a notification" do
+      expect { rake_task }.to change { Notification.count }.by(0)
+    end
+  end
+
+  context "there is a volunteer with no date_of_birth" do
+    let!(:volunteer) do
+      create(:volunteer, :with_assigned_supervisor, date_of_birth: nil)
+    end
+
+    it "does not create a notification" do
+      expect { rake_task }.to change { volunteer.supervisor.notifications.count }.by(0)
+    end
+  end
+
+  context "there is a volunteer with a birthday that is not next month" do
+    let!(:volunteer) do
+      create(:volunteer, :with_assigned_supervisor, date_of_birth: Date.new(1998, 7, 16))
+    end
+
+    it "does not create a notification" do
+      expect { rake_task }.to change { volunteer.supervisor.notifications.count }.by(0)
+    end
+  end
+end

spec/models/volunteer_spec.rb

@@ -288,6 +288,63 @@
     end
   end
 
+  describe ".with_supervisor" do
+    subject { Volunteer.with_supervisor }
+
+    context "no volunteers" do
+      it { is_expected.to be_empty }
+    end
+
+    context "volunteers" do
+      let!(:unassigned1) { create(:volunteer, display_name: "aaa") }
+      let!(:unassigned2) { create(:volunteer, display_name: "bbb") }
+
+      let!(:supervisor1) { create(:supervisor, display_name: "supe1") }
+      let!(:assigned1) { create(:volunteer, display_name: "ccc") }
+      let!(:assignment1) { create(:supervisor_volunteer, volunteer: assigned1, supervisor: supervisor1) }
+
+      let!(:supervisor2) { create(:supervisor, display_name: "supe2") }
+      let!(:assigned2) { create(:volunteer, display_name: "ddd") }
+      let!(:assignment2) { create(:supervisor_volunteer, volunteer: assigned2, supervisor: supervisor2) }
+
+      let!(:assigned3) { create(:volunteer, display_name: "eee") }
+      let!(:assignment3) { create(:supervisor_volunteer, volunteer: assigned3, supervisor: supervisor2) }
+
+      it { is_expected.to contain_exactly(assigned1, assigned2, assigned3) }
+    end
+  end
+
+  describe ".birthday_next_month" do
+    subject { Volunteer.birthday_next_month }
+    before do
+      travel_to Date.new(2022, 10, 1)
+    end
+
+    after do
+      travel_back
+    end
+
+    context "there are volunteers whose birthdays are not next month" do
+      let!(:volunteer1) { create(:volunteer, date_of_birth: Date.new(1990, 9, 1)) }
+      let!(:volunteer2) { create(:volunteer, date_of_birth: Date.new(1998, 10, 15)) }
+      let!(:volunteer3) { create(:volunteer, date_of_birth: Date.new(1919, 12, 1)) }
+
+      it { is_expected.to be_empty }
+    end
+
+    context "there are volunteers whose birthdays are next month" do
+      let!(:volunteer1) { create(:volunteer, date_of_birth: Date.new(2001, 11, 1)) }
+      let!(:volunteer2) { create(:volunteer, date_of_birth: Date.new(1920, 11, 15)) }
+      let!(:volunteer3) { create(:volunteer, date_of_birth: Date.new(1989, 11, 30)) }
+
+      let!(:volunteer4) { create(:volunteer, date_of_birth: Date.new(2001, 6, 1)) }
+      let!(:volunteer5) { create(:volunteer, date_of_birth: Date.new(1920, 1, 15)) }
+      let!(:volunteer6) { create(:volunteer, date_of_birth: Date.new(1967, 2, 21)) }
+
+      it { is_expected.to contain_exactly(volunteer1, volunteer2, volunteer3) }
+    end
+  end
+
   describe "#with_assigned_cases" do
     let!(:volunteers) { create_list(:volunteer, 3) }
     let!(:volunteer_with_cases) { create_list(:volunteer, 3, :with_casa_cases) }

spec/notifications/volunteer_birthday_notification_spec.rb

@@ -0,0 +1,19 @@
+require "rails_helper"
+
+RSpec.describe VolunteerBirthdayNotification, type: :model do
+  describe "message" do
+    let(:volunteer) do
+      build(:volunteer, display_name: "Biday Sewn", date_of_birth: Date.new(1968, 2, 8))
+    end
+
+    let(:volunteer_notification) { VolunteerBirthdayNotification.with(volunteer: volunteer) }
+
+    it "contains a short ordinal form of the volunteer's date of birth" do
+      expect(volunteer_notification.message).to include "February 8th"
+    end
+
+    it "contains the volunteer's name" do
+      expect(volunteer_notification.message).to include "Biday Sewn"
+    end
+  end
+end