Authorize environments controller actions

app/controllers/projects/environments_controller.rb

 class Projects::EnvironmentsController < Projects::ApplicationController
   layout 'project'
   before_action :authorize_read_environment!
+  before_action :authorize_create_environment!, only: [:new, :create]
+  before_action :authorize_update_environment!, only: [:destroy]
   before_action :environment, only: [:show, :destroy]
 
   def index

app/views/projects/environments/new.html.haml

@@ -9,7 +9,7 @@
   = form_for @environment, url: namespace_project_environments_path(@project.namespace, @project), html: { id: "new-environment-form", class: "col-lg-9 js-new-environment-form js-requires-input" } do |f|
     = form_errors(@environment)
     .form-group
-      = f.label :ref, 'Environment name', class: 'label-light'
+      = f.label :name, 'Environment name', class: 'label-light'
       = f.text_field :name, required: true, class: 'form-control'
     = f.submit 'Create environment', class: 'btn btn-create'
     = link_to "Cancel", namespace_project_environments_path(@project.namespace, @project), class: "btn btn-cancel"

app/views/projects/environments/show.html.haml

@@ -9,6 +9,7 @@
 
     .col-md-3
       .nav-controls
+        - if can?(current_user, :update_environment, @project)
           = link_to 'Destroy', namespace_project_environment_path(@project.namespace, @project, @environment), data: { confirm: 'Are you sure?' }, class: 'btn btn-danger', method: :delete
 
   - if @deployments.blank?

spec/features/security/project/public_access_spec.rb

@@ -175,6 +175,49 @@ describe "Public Project Access", feature: true  do
     end
   end
 
+  describe "GET /:project_path/environments" do
+    subject { namespace_project_environments_path(project.namespace, project) }
+
+    it { is_expected.to be_allowed_for :admin }
+    it { is_expected.to be_allowed_for owner }
+    it { is_expected.to be_allowed_for master }
+    it { is_expected.to be_allowed_for developer }
+    it { is_expected.to be_allowed_for reporter }
+    it { is_expected.to be_denied_for guest }
+    it { is_expected.to be_denied_for :user }
+    it { is_expected.to be_denied_for :external }
+    it { is_expected.to be_denied_for :visitor }
+  end
+
+  describe "GET /:project_path/environments/:id" do
+    let(:environment) { create(:environment, project: project) }
+    subject { namespace_project_environments_path(project.namespace, project, environment) }
+
+    it { is_expected.to be_allowed_for :admin }
+    it { is_expected.to be_allowed_for owner }
+    it { is_expected.to be_allowed_for master }
+    it { is_expected.to be_allowed_for developer }
+    it { is_expected.to be_allowed_for reporter }
+    it { is_expected.to be_denied_for guest }
+    it { is_expected.to be_denied_for :user }
+    it { is_expected.to be_denied_for :external }
+    it { is_expected.to be_denied_for :visitor }
+  end
+
+  describe "GET /:project_path/environments/new" do
+    subject { new_namespace_project_environment_path(project.namespace, project) }
+
+    it { is_expected.to be_allowed_for :admin }
+    it { is_expected.to be_allowed_for owner }
+    it { is_expected.to be_allowed_for master }
+    it { is_expected.to be_allowed_for developer }
+    it { is_expected.to be_denied_for reporter }
+    it { is_expected.to be_denied_for guest }
+    it { is_expected.to be_denied_for :user }
+    it { is_expected.to be_denied_for :external }
+    it { is_expected.to be_denied_for :visitor }
+  end
+
   describe "GET /:project_path/blob" do
     let(:commit) { project.repository.commit }