1 files changed, 29 insertions, 0 deletions
diff --git a/spec/lib/gitlab/usage/metric_spec.rb b/spec/lib/gitlab/usage/metric_spec.rb
new file mode 100644
index 00000000000..40671d980d6
--- /dev/null
+++ b/spec/lib/gitlab/usage/metric_spec.rb
@@ -0,0 +1,29 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe Gitlab::Usage::Metric do
+  describe '#definition' do
+    it 'returns generation_1 metric definiton' do
+      expect(described_class.new(default_generation_path: 'uuid').definition).to be_an(Gitlab::Usage::MetricDefinition)
+    end
+  end
+
+  describe '#unflatten_default_path' do
+    using RSpec::Parameterized::TableSyntax
+
+    where(:default_generation_path, :value, :expected_hash) do
+      'uuid'                                     | nil    | { uuid: nil }
+      'uuid'                                     | '1111' | { uuid: '1111' }
+      'counts.issues'                            | nil    | { counts: { issues: nil } }
+      'counts.issues'                            | 100    | { counts: { issues: 100 } }
+      'usage_activity_by_stage.verify.ci_builds' | 100    | { usage_activity_by_stage: { verify: { ci_builds: 100 } } }
+    end
+
+    with_them do
+      subject { described_class.new(default_generation_path: default_generation_path, value: value).unflatten_default_path }
+
+      it { is_expected.to eq(expected_hash) }
+    end
+  end
+end