1 files changed, 85 insertions, 0 deletions
diff --git a/spec/services/ml/experiment_tracking/experiment_repository_spec.rb b/spec/services/ml/experiment_tracking/experiment_repository_spec.rb
new file mode 100644
index 00000000000..80e1fa025d1
--- /dev/null
+++ b/spec/services/ml/experiment_tracking/experiment_repository_spec.rb
@@ -0,0 +1,85 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe ::Ml::ExperimentTracking::ExperimentRepository do
+  let_it_be(:project) { create(:project) }
+  let_it_be(:user) { create(:user) }
+  let_it_be(:experiment) { create(:ml_experiments, user: user, project: project) }
+  let_it_be(:experiment2) { create(:ml_experiments, user: user, project: project) }
+  let_it_be(:experiment3) { create(:ml_experiments, user: user, project: project) }
+  let_it_be(:experiment4) { create(:ml_experiments, user: user) }
+
+  let(:repository) { described_class.new(project, user) }
+
+  describe '#by_iid_or_name' do
+    let(:iid) { experiment.iid }
+    let(:name) { nil }
+
+    subject { repository.by_iid_or_name(iid: iid, name: name) }
+
+    context 'when iid passed' do
+      it('fetches the experiment') { is_expected.to eq(experiment) }
+
+      context 'and name passed' do
+        let(:name) { experiment2.name }
+
+        it('ignores the name') { is_expected.to eq(experiment) }
+      end
+
+      context 'and does not exist' do
+        let(:iid) { non_existing_record_iid }
+
+        it { is_expected.to eq(nil) }
+      end
+    end
+
+    context 'when iid is not passed', 'and name is passed' do
+      let(:iid) { nil }
+
+      context 'when name exists' do
+        let(:name) { experiment2.name }
+
+        it('fetches the experiment') { is_expected.to eq(experiment2) }
+      end
+
+      context 'when name does not exist' do
+        let(:name) { non_existing_record_iid }
+
+        it { is_expected.to eq(nil) }
+      end
+    end
+  end
+
+  describe '#all' do
+    it 'fetches experiments for project' do
+      expect(repository.all).to match_array([experiment, experiment2, experiment3])
+    end
+  end
+
+  describe '#create!' do
+    let(:name) { 'hello' }
+
+    subject { repository.create!(name) }
+
+    it 'creates the candidate' do
+      expect { subject }.to change { repository.all.size }.by(1)
+    end
+
+    context 'when name exists' do
+      let(:name) { experiment.name }
+
+      it 'throws error' do
+        expect { subject }.to raise_error(ActiveRecord::ActiveRecordError)
+      end
+    end
+
+    context 'when name is missing' do
+      let(:name) { nil }
+
+      it 'throws error' do
+        expect { subject }.to raise_error(ActiveRecord::ActiveRecordError)
+      end
+    end
+  end
+end