1 files changed, 70 insertions, 0 deletions
diff --git a/spec/workers/analytics/usage_trends/counter_job_worker_spec.rb b/spec/workers/analytics/usage_trends/counter_job_worker_spec.rb
new file mode 100644
index 00000000000..9e4c82ee981
--- /dev/null
+++ b/spec/workers/analytics/usage_trends/counter_job_worker_spec.rb
@@ -0,0 +1,70 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe Analytics::UsageTrends::CounterJobWorker do
+  let_it_be(:user_1) { create(:user) }
+  let_it_be(:user_2) { create(:user) }
+
+  let(:users_measurement_identifier) { ::Analytics::UsageTrends::Measurement.identifiers.fetch(:users) }
+  let(:recorded_at) { Time.zone.now }
+  let(:job_args) { [users_measurement_identifier, user_1.id, user_2.id, recorded_at] }
+
+  before do
+    allow(ActiveRecord::Base.connection).to receive(:transaction_open?).and_return(false)
+  end
+
+  include_examples 'an idempotent worker' do
+    it 'counts a scope and stores the result' do
+      subject
+
+      measurement = Analytics::UsageTrends::Measurement.users.first
+      expect(measurement.recorded_at).to be_like_time(recorded_at)
+      expect(measurement.identifier).to eq('users')
+      expect(measurement.count).to eq(2)
+    end
+  end
+
+  context 'when no records are in the database' do
+    let(:users_measurement_identifier) { ::Analytics::UsageTrends::Measurement.identifiers.fetch(:groups) }
+
+    subject { described_class.new.perform(users_measurement_identifier, nil, nil, recorded_at) }
+
+    it 'sets 0 as the count' do
+      subject
+
+      measurement = Analytics::UsageTrends::Measurement.groups.first
+      expect(measurement.recorded_at).to be_like_time(recorded_at)
+      expect(measurement.identifier).to eq('groups')
+      expect(measurement.count).to eq(0)
+    end
+  end
+
+  it 'does not raise error when inserting duplicated measurement' do
+    subject
+
+    expect { subject }.not_to raise_error
+  end
+
+  it 'does not insert anything when BatchCount returns error' do
+    allow(Gitlab::Database::BatchCount).to receive(:batch_count).and_return(Gitlab::Database::BatchCounter::FALLBACK)
+
+    expect { subject }.not_to change { Analytics::UsageTrends::Measurement.count }
+  end
+
+  context 'when pipelines_succeeded identifier is passed' do
+    let_it_be(:pipeline) { create(:ci_pipeline, :success) }
+
+    let(:successful_pipelines_measurement_identifier) { ::Analytics::UsageTrends::Measurement.identifiers.fetch(:pipelines_succeeded) }
+    let(:job_args) { [successful_pipelines_measurement_identifier, pipeline.id, pipeline.id, recorded_at] }
+
+    it 'counts successful pipelines' do
+      subject
+
+      measurement = Analytics::UsageTrends::Measurement.pipelines_succeeded.first
+      expect(measurement.recorded_at).to be_like_time(recorded_at)
+      expect(measurement.identifier).to eq('pipelines_succeeded')
+      expect(measurement.count).to eq(1)
+    end
+  end
+end