Rename user cohorts -> cohorts

1 files changed, 38 insertions, 0 deletions

diff --git a/spec/services/cohorts_service_spec.rb b/spec/services/cohorts_service_spec.rb
new file mode 100644
index 00000000000..878e9fcea05
--- /dev/null
+++ b/spec/services/cohorts_service_spec.rb
@@ -0,0 +1,38 @@
+require 'spec_helper'
+
+describe CohortsService do
+  describe '#execute' do
+    def month_start(months_ago)
+      months_ago.months.ago.beginning_of_month.to_date
+    end
+
+    # In the interests of speed and clarity, this example has minimal data.
+    it 'returns a list of user cohorts' do
+      6.times do |months_ago|
+        months_ago_time = (months_ago * 2).months.ago
+
+        create(:user, created_at: months_ago_time, current_sign_in_at: Time.now)
+        create(:user, created_at: months_ago_time, current_sign_in_at: months_ago_time)
+      end
+
+      create(:user) # this user is inactive and belongs to the current month
+
+      expected = {
+        month_start(11) => { months: [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0], total: 0, inactive: 0 },
+        month_start(10) => { months: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1], total: 2, inactive: 0 },
+        month_start(9) => { months: [0, 0, 0, 0, 0, 0, 0, 0, 0, 0], total: 0, inactive: 0 },
+        month_start(8) => { months: [2, 1, 1, 1, 1, 1, 1, 1, 1], total: 2, inactive: 0 },
+        month_start(7) => { months: [0, 0, 0, 0, 0, 0, 0, 0], total: 0, inactive: 0 },
+        month_start(6) => { months: [2, 1, 1, 1, 1, 1, 1], total: 2, inactive: 0 },
+        month_start(5) => { months: [0, 0, 0, 0, 0, 0], total: 0, inactive: 0 },
+        month_start(4) => { months: [2, 1, 1, 1, 1], total: 2, inactive: 0 },
+        month_start(3) => { months: [0, 0, 0, 0], total: 0, inactive: 0 },
+        month_start(2) => { months: [2, 1, 1], total: 2, inactive: 0 },
+        month_start(1) => { months: [0, 0], total: 0, inactive: 0 },
+        month_start(0) => { months: [2], total: 2, inactive: 1 }
+      }
+
+      expect(described_class.new.execute).to eq(expected)
+    end
+  end
+end