diff --git a/devops-service/spec/models/stack_template/stack_template_ec2_spec.rb b/devops-service/spec/models/stack_template/stack_template_ec2_spec.rb
index 6e63c48..3386445 100644
--- a/devops-service/spec/models/stack_template/stack_template_ec2_spec.rb
+++ b/devops-service/spec/models/stack_template/stack_template_ec2_spec.rb
@@ -7,8 +7,20 @@ RSpec.describe Devops::Model::StackTemplateEc2, type: :model do
   before do
     allow(Provider::ProviderFactory).to receive(:providers).and_return(%w(ec2))
     allow_any_instance_of(Devops::Model::StackTemplateEc2).to receive_message_chain('provider_instance.validate_stack_template') { true }
-    allow_any_instance_of(Devops::Model::StackTemplateEc2).to receive_message_chain('provider_instance.store_file') { {'url' => nil} }
+    allow_any_instance_of(Devops::Model::StackTemplateEc2).to receive_message_chain('provider_instance.store_stack_template') { {'url' => nil} }
   end
 
   it_behaves_like 'stack template'
+
+  it 'uploads file to S3' do
+    expect_any_instance_of(Devops::Model::StackTemplateEc2).to receive_message_chain('provider_instance.store_stack_template')
+    params = {
+      'id' => 'foo',
+      'template_body' => '{}',
+      'owner' => 'root',
+      'provider' => 'ec2'
+    }
+    expect(described_class.create(params)).to be_an_instance_of(described_class)
+  end
+
 end
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