1 files changed, 66 insertions, 0 deletions
diff --git a/spec/controllers/projects/web_ide_schemas_controller_spec.rb b/spec/controllers/projects/web_ide_schemas_controller_spec.rb
new file mode 100644
index 00000000000..fbec941aecc
--- /dev/null
+++ b/spec/controllers/projects/web_ide_schemas_controller_spec.rb
@@ -0,0 +1,66 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe Projects::WebIdeSchemasController do
+  let_it_be(:developer) { create(:user) }
+  let_it_be(:project) { create(:project, :private, :repository, namespace: developer.namespace) }
+
+  before do
+    project.add_developer(developer)
+
+    sign_in(user)
+  end
+
+  describe 'GET show' do
+    let(:user) { developer }
+    let(:branch) { 'master' }
+
+    subject do
+      get :show, params: {
+        namespace_id: project.namespace.to_param,
+        project_id: project,
+        branch: branch,
+        filename: 'package.json'
+      }
+    end
+
+    before do
+      allow_next_instance_of(::Ide::SchemasConfigService) do |instance|
+        allow(instance).to receive(:execute).and_return(result)
+      end
+    end
+
+    context 'when branch is invalid' do
+      let(:branch) { 'non-existent' }
+
+      it 'returns 422' do
+        subject
+
+        expect(response).to have_gitlab_http_status(:unprocessable_entity)
+      end
+    end
+
+    context 'when a valid schema exists' do
+      let(:result) { { status: :success, schema: { schema: 'Sample Schema' } } }
+
+      it 'returns the schema' do
+        subject
+
+        expect(response).to have_gitlab_http_status(:ok)
+        expect(response.body).to eq('{"schema":"Sample Schema"}')
+      end
+    end
+
+    context 'when an error occurs parsing the schema' do
+      let(:result) { { status: :error, message: 'Some error occured' } }
+
+      it 'returns 422 with the error' do
+        subject
+
+        expect(response).to have_gitlab_http_status(:unprocessable_entity)
+        expect(response.body).to eq('{"status":"error","message":"Some error occured"}')
+      end
+    end
+  end
+end