Change exposed_ports to array

spec/factories/execution_environment.rb

@@ -122,7 +122,7 @@ FactoryBot.define do
     default_cpu_limit
     docker_image { 'hklement/ubuntu-sinatra:latest' }
     file_type { association :dot_rb, user: user }
-    exposed_ports { '4567' }
+    exposed_ports { [4567] }
     help
     name { 'Sinatra' }
     network_enabled { true }

spec/lib/docker_client_spec.rb

@@ -332,7 +332,7 @@ describe DockerClient, docker: true do
 
   describe '.mapped_ports' do
     context 'with exposed ports' do
-      before { execution_environment.exposed_ports = '3000' }
+      before { execution_environment.exposed_ports = [3000] }
 
       it 'returns a mapping' do
         expect(described_class.mapped_ports(execution_environment)).to be_a(Hash)

spec/models/execution_environment_spec.rb

@@ -178,17 +178,17 @@ describe ExecutionEnvironment do
   end
 
   describe '#exposed_ports_list' do
-    it 'returns an empty array if no ports are exposed' do
-      execution_environment.exposed_ports = nil
-      expect(execution_environment.exposed_ports_list).to eq([])
+    it 'returns an empty string if no ports are exposed' do
+      execution_environment.exposed_ports = []
+      expect(execution_environment.exposed_ports_list).to eq('')
     end
 
-    it 'returns an array of integers representing the exposed ports' do
-      execution_environment.exposed_ports = '1,2,3'
-      expect(execution_environment.exposed_ports_list).to eq([1, 2, 3])
+    it 'returns an string with comma-separated integers representing the exposed ports' do
+      execution_environment.exposed_ports = [1, 2, 3]
+      expect(execution_environment.exposed_ports_list).to eq('1, 2, 3')
 
-      execution_environment.exposed_ports_list.each do |port|
-        expect(execution_environment.exposed_ports).to include(port.to_s)
+      execution_environment.exposed_ports.each do |port|
+        expect(execution_environment.exposed_ports_list).to include(port.to_s)
       end
     end
   end