1 files changed, 55 insertions, 0 deletions
diff --git a/spec/lib/gitlab/usage_data_non_sql_metrics_spec.rb b/spec/lib/gitlab/usage_data_non_sql_metrics_spec.rb
new file mode 100644
index 00000000000..32d1288c59c
--- /dev/null
+++ b/spec/lib/gitlab/usage_data_non_sql_metrics_spec.rb
@@ -0,0 +1,55 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe Gitlab::UsageDataNonSqlMetrics do
+  let(:default_count) { Gitlab::UsageDataNonSqlMetrics::SQL_METRIC_DEFAULT }
+
+  describe '.count' do
+    it 'returns default value for count' do
+      expect(described_class.count(User)).to eq(default_count)
+    end
+  end
+
+  describe '.distinct_count' do
+    it 'returns default value for distinct count' do
+      expect(described_class.distinct_count(User)).to eq(default_count)
+    end
+  end
+
+  describe '.estimate_batch_distinct_count' do
+    it 'returns default value for estimate_batch_distinct_count' do
+      expect(described_class.estimate_batch_distinct_count(User)).to eq(default_count)
+    end
+  end
+
+  describe '.sum' do
+    it 'returns default value for sum' do
+      expect(described_class.sum(JiraImportState.finished, :imported_issues_count)).to eq(default_count)
+    end
+  end
+
+  describe '.histogram' do
+    it 'returns default value for histogram' do
+      expect(described_class.histogram(JiraImportState.finished, :imported_issues_count, buckets: [], bucket_size: 0)).to eq(default_count)
+    end
+  end
+
+  describe 'min/max methods' do
+    using RSpec::Parameterized::TableSyntax
+
+    where(:model, :result) do
+      User       | nil
+      Issue      | nil
+      Deployment | nil
+      Project    | nil
+    end
+
+    with_them do
+      it 'returns nil' do
+        expect(described_class.minimum_id(model)).to eq(result)
+        expect(described_class.maximum_id(model)).to eq(result)
+      end
+    end
+  end
+end