1 files changed, 81 insertions, 0 deletions
diff --git a/spec/requests/api/usage_data_spec.rb b/spec/requests/api/usage_data_spec.rb
index 4f4f386e9db..d44f179eed8 100644
--- a/spec/requests/api/usage_data_spec.rb
+++ b/spec/requests/api/usage_data_spec.rb
@@ -5,6 +5,87 @@ require 'spec_helper'
 RSpec.describe API::UsageData do
   let_it_be(:user) { create(:user) }
 
+  describe 'POST /usage_data/increment_counter' do
+    let(:endpoint) { '/usage_data/increment_counter' }
+    let(:known_event) { "#{known_event_prefix}_#{known_event_postfix}" }
+    let(:known_event_prefix) { "static_site_editor" }
+    let(:known_event_postfix) { 'commits' }
+    let(:unknown_event) { 'unknown' }
+
+    context 'without CSRF token' do
+      it 'returns forbidden' do
+        stub_feature_flags(usage_data_api: true)
+        allow(Gitlab::RequestForgeryProtection).to receive(:verified?).and_return(false)
+
+        post api(endpoint, user), params: { event: known_event }
+
+        expect(response).to have_gitlab_http_status(:forbidden)
+      end
+    end
+
+    context 'usage_data_api feature not enabled' do
+      it 'returns not_found' do
+        stub_feature_flags(usage_data_api: false)
+
+        post api(endpoint, user), params: { event: known_event }
+
+        expect(response).to have_gitlab_http_status(:not_found)
+      end
+    end
+
+    context 'without authentication' do
+      it 'returns 401 response' do
+        post api(endpoint), params: { event: known_event }
+
+        expect(response).to have_gitlab_http_status(:unauthorized)
+      end
+    end
+
+    context 'with authentication' do
+      before do
+        stub_feature_flags(usage_data_api: true)
+        stub_feature_flags("usage_data_#{known_event}" => true)
+        stub_application_setting(usage_ping_enabled: true)
+        allow(Gitlab::RequestForgeryProtection).to receive(:verified?).and_return(true)
+      end
+
+      context 'when event is missing from params' do
+        it 'returns bad request' do
+          post api(endpoint, user), params: {}
+
+          expect(response).to have_gitlab_http_status(:bad_request)
+        end
+      end
+
+      %w[merge_requests commits].each do |postfix|
+        context 'with correct params' do
+          let(:known_event_postfix) { postfix }
+
+          it 'returns status ok' do
+            expect(Gitlab::UsageDataCounters::BaseCounter).to receive(:count).with(known_event_postfix)
+            post api(endpoint, user), params: { event: known_event }
+
+            expect(response).to have_gitlab_http_status(:ok)
+          end
+        end
+      end
+
+      context 'with unknown event' do
+        before do
+          skip_feature_flags_yaml_validation
+        end
+
+        it 'returns status ok' do
+          expect(Gitlab::UsageDataCounters::BaseCounter).not_to receive(:count)
+
+          post api(endpoint, user), params: { event: unknown_event }
+
+          expect(response).to have_gitlab_http_status(:ok)
+        end
+      end
+    end
+  end
+
   describe 'POST /usage_data/increment_unique_users' do
     let(:endpoint) { '/usage_data/increment_unique_users' }
     let(:known_event) { 'g_compliance_dashboard' }