Update specs for CI Build, add `artifacts?` method

`artifacts?` method checks if artifacts archive is available.

app/controllers/projects/artifacts_controller.rb

@@ -15,6 +15,8 @@ class Projects::ArtifactsController < Projects::ApplicationController
   end
 
   def browse
+    return render_404 unless build.artifacts?
+
     current_path = params[:path] ? "./#{params[:path]}/" : './'
     artifacts_metadata = build.artifacts_metadata(current_path)
     @path = Gitlab::StringPath.new(current_path, artifacts_metadata)

app/models/ci/build.rb

@@ -319,24 +319,26 @@ module Ci
       pending? && !any_runners_online?
     end
 
-    def artifacts_download_url
-      if artifacts_file.exists?
-        download_namespace_project_build_artifacts_path(project.namespace, project, self)
-      end
-    end
-
-    def artifacts_browse_url
-      if artifacts_file.exists?
-        browse_namespace_project_build_artifacts_path(project.namespace, project, self)
-      end
-    end
-
     def execute_hooks
       build_data = Gitlab::BuildDataBuilder.build(self)
       project.execute_hooks(build_data.dup, :build_hooks)
       project.execute_services(build_data.dup, :build_hooks)
     end
 
+    def artifacts?
+      artifacts_file.exists?
+    end
+
+    def artifacts_download_url
+      download_namespace_project_build_artifacts_path(project.namespace, project, self) if
+        artifacts?
+    end
+
+    def artifacts_browse_url
+      browse_namespace_project_build_artifacts_path(project.namespace, project, self) if
+        artifacts?
+    end
+
     def artifacts_metadata(path)
       []
     end

app/views/admin/builds/_build.html.haml

@@ -60,7 +60,7 @@
 
   %td
     .pull-right
-      - if current_user && can?(current_user, :download_build_artifacts, project) && build.artifacts_file.exist?
+      - if current_user && can?(current_user, :download_build_artifacts, project) && build.artifacts?
         = link_to build.artifacts_download_url, title: 'Download artifacts' do
           %i.fa.fa-download
       - if current_user && can?(current_user, :manage_builds, build.project)

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

@@ -89,7 +89,7 @@
             Test coverage
           %h1 #{@build.coverage}%
 
-      - if current_user && can?(current_user, :download_build_artifacts, @project) && @build.artifacts_file.exist?
+      - if current_user && can?(current_user, :download_build_artifacts, @project) && @build.artifacts?
         .build-widget.center
           .panel.panel-default
             .panel-heading Build artifacts

app/views/projects/commit_statuses/_commit_status.html.haml

@@ -66,7 +66,7 @@
 
   %td
     .pull-right
-      - if current_user && can?(current_user, :download_build_artifacts, commit_status.project) && commit_status.artifacts_file.exist?
+      - if current_user && can?(current_user, :download_build_artifacts, commit_status.project) && commit_status.artifacts?
         = link_to commit_status.artifacts_download_url, title: 'Download artifacts' do
           %i.fa.fa-download
       - if current_user && can?(current_user, :manage_builds, commit_status.project)

spec/models/build_spec.rb

-# == Schema Information
-#
-# Table name: builds
-#
-#  id                 :integer          not null, primary key
-#  project_id         :integer
-#  status             :string(255)
-#  finished_at        :datetime
-#  trace              :text
-#  created_at         :datetime
-#  updated_at         :datetime
-#  started_at         :datetime
-#  runner_id          :integer
-#  commit_id          :integer
-#  coverage           :float
-#  commands           :text
-#  job_id             :integer
-#  name               :string(255)
-#  deploy             :boolean          default(FALSE)
-#  options            :text
-#  allow_failure      :boolean          default(FALSE), not null
-#  stage              :string(255)
-#  trigger_request_id :integer
-#
-
 require 'spec_helper'
 
 describe Ci::Build, models: true do
@@ -376,13 +351,46 @@ describe Ci::Build, models: true do
       is_expected.to be_nil
     end
 
-    it 'should be nil if artifact exist' do
+    it 'should not be nil if artifact exist' do
       gif = fixture_file_upload(Rails.root + 'spec/fixtures/banana_sample.gif', 'image/gif')
       build.update_attributes(artifacts_file: gif)
       is_expected.to_not be_nil
     end
   end
 
+  describe :artifacts_browse_url do
+    subject { build.artifacts_browse_url }
+
+    it "should be nil if artifact doesn't exist" do
+      build.update_attributes(artifacts_file: nil)
+      is_expected.to be_nil
+    end
+
+    it 'should not be nil if artifact exist' do
+      gif = fixture_file_upload(Rails.root + 'spec/fixtures/banana_sample.gif', 'image/gif')
+      build.update_attributes(artifacts_file: gif)
+      is_expected.to_not be_nil
+    end
+  end
+
+  describe :artifacts? do
+    subject { build.artifacts? }
+
+    context 'artifacts archive does not exist' do
+      before { build.update_attributes(artifacts_file: nil) }
+      it { is_expected.to be_falsy }
+    end
+
+    context 'artifacts archive exists' do
+      before do
+        gif = fixture_file_upload(Rails.root + 'spec/fixtures/banana_sample.gif', 'image/gif')
+        build.update_attributes(artifacts_file: gif)
+      end
+
+      it { is_expected.to be_truthy }
+    end
+  end
+
   describe :repo_url do
     let(:build) { FactoryGirl.create :ci_build }
     let(:project) { build.project }