1 files changed, 40 insertions, 0 deletions
diff --git a/spec/lib/gitlab/database/count/exact_count_strategy_spec.rb b/spec/lib/gitlab/database/count/exact_count_strategy_spec.rb
new file mode 100644
index 00000000000..3991c737a26
--- /dev/null
+++ b/spec/lib/gitlab/database/count/exact_count_strategy_spec.rb
@@ -0,0 +1,40 @@
+require 'spec_helper'
+
+describe Gitlab::Database::Count::ExactCountStrategy do
+  before do
+    create_list(:project, 3)
+    create(:identity)
+  end
+
+  let(:models) { [Project, Identity] }
+
+  subject { described_class.new(models).count }
+
+  describe '#count' do
+    it 'counts all models' do
+      expect(models).to all(receive(:count).and_call_original)
+
+      expect(subject).to eq({ Project => 3, Identity => 1 })
+    end
+
+    it 'returns default value if count times out' do
+      allow(models.first).to receive(:count).and_raise(ActiveRecord::StatementInvalid.new(''))
+
+      expect(subject).to eq({})
+    end
+  end
+
+  describe '.enabled?' do
+    it 'is enabled for PostgreSQL' do
+      allow(Gitlab::Database).to receive(:postgresql?).and_return(true)
+
+      expect(described_class.enabled?).to be_truthy
+    end
+
+    it 'is enabled for MySQL' do
+      allow(Gitlab::Database).to receive(:postgresql?).and_return(false)
+
+      expect(described_class.enabled?).to be_truthy
+    end
+  end
+end