Add latest changes from gitlab-org/gitlab@13-1-stable-ee

1 files changed, 111 insertions, 0 deletions

diff --git a/spec/lib/gitlab/utils/usage_data_spec.rb b/spec/lib/gitlab/utils/usage_data_spec.rb
new file mode 100644
index 00000000000..7de615384c5
--- /dev/null
+++ b/spec/lib/gitlab/utils/usage_data_spec.rb
@@ -0,0 +1,111 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+describe Gitlab::Utils::UsageData do
+  describe '#count' do
+    let(:relation) { double(:relation) }
+
+    it 'returns the count when counting succeeds' do
+      allow(relation).to receive(:count).and_return(1)
+
+      expect(described_class.count(relation, batch: false)).to eq(1)
+    end
+
+    it 'returns the fallback value when counting fails' do
+      stub_const("Gitlab::Utils::UsageData::FALLBACK", 15)
+      allow(relation).to receive(:count).and_raise(ActiveRecord::StatementInvalid.new(''))
+
+      expect(described_class.count(relation, batch: false)).to eq(15)
+    end
+  end
+
+  describe '#distinct_count' do
+    let(:relation) { double(:relation) }
+
+    it 'returns the count when counting succeeds' do
+      allow(relation).to receive(:distinct_count_by).and_return(1)
+
+      expect(described_class.distinct_count(relation, batch: false)).to eq(1)
+    end
+
+    it 'returns the fallback value when counting fails' do
+      stub_const("Gitlab::Utils::UsageData::FALLBACK", 15)
+      allow(relation).to receive(:distinct_count_by).and_raise(ActiveRecord::StatementInvalid.new(''))
+
+      expect(described_class.distinct_count(relation, batch: false)).to eq(15)
+    end
+  end
+
+  describe '#alt_usage_data' do
+    it 'returns the fallback when it gets an error' do
+      expect(described_class.alt_usage_data { raise StandardError } ).to eq(-1)
+    end
+
+    it 'returns the evaluated block when give' do
+      expect(described_class.alt_usage_data { Gitlab::CurrentSettings.uuid } ).to eq(Gitlab::CurrentSettings.uuid)
+    end
+
+    it 'returns the value when given' do
+      expect(described_class.alt_usage_data(1)).to eq 1
+    end
+  end
+
+  describe '#redis_usage_data' do
+    context 'with block given' do
+      it 'returns the fallback when it gets an error' do
+        expect(described_class.redis_usage_data { raise ::Redis::CommandError } ).to eq(-1)
+      end
+
+      it 'returns the evaluated block when given' do
+        expect(described_class.redis_usage_data { 1 }).to eq(1)
+      end
+    end
+
+    context 'with counter given' do
+      it 'returns the falback values for all counter keys when it gets an error' do
+        allow(::Gitlab::UsageDataCounters::WikiPageCounter).to receive(:totals).and_raise(::Redis::CommandError)
+        expect(described_class.redis_usage_data(::Gitlab::UsageDataCounters::WikiPageCounter)).to eql(::Gitlab::UsageDataCounters::WikiPageCounter.fallback_totals)
+      end
+
+      it 'returns the totals when couter is given' do
+        allow(::Gitlab::UsageDataCounters::WikiPageCounter).to receive(:totals).and_return({ wiki_pages_create: 2 })
+        expect(described_class.redis_usage_data(::Gitlab::UsageDataCounters::WikiPageCounter)).to eql({ wiki_pages_create: 2 })
+      end
+    end
+  end
+
+  describe '#with_prometheus_client' do
+    context 'when Prometheus is enabled' do
+      it 'yields a client instance and returns the block result' do
+        expect(Gitlab::Prometheus::Internal).to receive(:prometheus_enabled?).and_return(true)
+        expect(Gitlab::Prometheus::Internal).to receive(:uri).and_return('http://prom:9090')
+
+        result = described_class.with_prometheus_client { |client| client }
+
+        expect(result).to be_an_instance_of(Gitlab::PrometheusClient)
+      end
+    end
+
+    context 'when Prometheus is disabled' do
+      it 'returns nil' do
+        expect(Gitlab::Prometheus::Internal).to receive(:prometheus_enabled?).and_return(false)
+
+        result = described_class.with_prometheus_client { |client| client }
+
+        expect(result).to be nil
+      end
+    end
+  end
+
+  describe '#measure_duration' do
+    it 'returns block result and execution duration' do
+      allow(Process).to receive(:clock_gettime).and_return(1, 3)
+
+      result, duration = described_class.measure_duration { 42 }
+
+      expect(result).to eq(42)
+      expect(duration).to eq(2)
+    end
+  end
+end