Add external_url field to Environment GraphQL Type

Changelog: added

app/graphql/types/environment_type.rb

@@ -21,6 +21,9 @@ class EnvironmentType < BaseObject
     field :path, GraphQL::Types::String, null: false,
                                          description: 'Path to the environment.'
 
+    field :external_url, GraphQL::Types::String, null: true,
+                                                 description: 'External URL of the environment.'
+
     field :metrics_dashboard, Types::Metrics::DashboardType, null: true,
                                                              description: 'Metrics dashboard schema for the environment.',
                                                              resolver: Resolvers::Metrics::DashboardResolver

doc/api/graphql/reference/index.md

@@ -11457,6 +11457,7 @@ Describes where code is deployed for a project.
 | Name | Type | Description |
 | ---- | ---- | ----------- |
+| <a id="environmentexternalurl"></a>`externalUrl` | [`String`](#string) | External URL of the environment. |
 | <a id="environmentid"></a>`id` | [`ID!`](#id) | ID of the environment. |
 | <a id="environmentlatestopenedmostseverealert"></a>`latestOpenedMostSevereAlert` | [`AlertManagementAlert`](#alertmanagementalert) | Most severe open alert for the environment. If multiple alerts have equal severity, the most recent is returned. |
 | <a id="environmentname"></a>`name` | [`String!`](#string) | Human-readable name of the environment. |

spec/graphql/types/environment_type_spec.rb

@@ -7,7 +7,7 @@
 
   it 'has the expected fields' do
     expected_fields = %w[
-      name id state metrics_dashboard latest_opened_most_severe_alert path deployments
+      name id state metrics_dashboard latest_opened_most_severe_alert path external_url deployments
     ]
 
     expect(described_class).to have_graphql_fields(*expected_fields)
@@ -17,7 +17,7 @@
 
   context 'when there is an environment' do
     let_it_be(:project) { create(:project) }
-    let_it_be(:environment) { create(:environment, project: project) }
+    let_it_be(:environment) { create(:environment, project: project, external_url: 'https://gitlab.com') }
     let_it_be(:user) { create(:user) }
 
     subject { GitlabSchema.execute(query, context: { current_user: user }).as_json }
@@ -29,6 +29,7 @@
             environment(name: "#{environment.name}") {
               name
               path
+              externalUrl
               state
             }
           }
@@ -50,6 +51,10 @@
       )
     end
 
+    it 'returns the external url of the environment' do
+      expect(subject['data']['project']['environment']['externalUrl']).to eq(environment.external_url)
+    end
+
     context 'when query alert data for the environment' do
       let_it_be(:query) do
         %(