Add new API endpoint to expose single environment

This is resolving https://gitlab.com/gitlab-org/gitlab-ce/issues/30157.

Implement new API endpoint `/projects/:id/environments/:environment_id`
to expose single environment. Include information for environment's last
deployment if there is one.

1 files changed, 22 insertions, 0 deletions

diff --git a/spec/requests/api/environments_spec.rb b/spec/requests/api/environments_spec.rb
index 493d3642255..8fc7fdc8632 100644
--- a/spec/requests/api/environments_spec.rb
+++ b/spec/requests/api/environments_spec.rb
@@ -32,6 +32,7 @@ describe API::Environments do
         expect(json_response.first['name']).to eq(environment.name)
         expect(json_response.first['external_url']).to eq(environment.external_url)
         expect(json_response.first['project'].keys).to contain_exactly(*project_data_keys)
+        expect(json_response.first).not_to have_key("last_deployment")
       end
     end
 
@@ -188,4 +189,25 @@ describe API::Environments do
       end
     end
   end
+
+  describe 'GET /projects/:id/environments/:environment_id' do
+    context 'as member of the project' do
+      it 'returns project environments' do
+        create(:deployment, :success, project: project, environment: environment)
+
+        get api("/projects/#{project.id}/environments/#{environment.id}", user)
+
+        expect(response).to have_gitlab_http_status(200)
+        expect(response).to match_response_schema('public_api/v4/environment')
+      end
+    end
+
+    context 'as non member' do
+      it 'returns a 404 status code' do
+        get api("/projects/#{project.id}/environments/#{environment.id}", non_member)
+
+        expect(response).to have_gitlab_http_status(404)
+      end
+    end
+  end
 end