Add tests

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

@@ -40,8 +40,7 @@
               This build is the most recent deployment to #{environment_link_for_build(@build.project, @build)}.
             - else
               This build is an out-of-date deployment to #{environment_link_for_build(@build.project, @build)}.
-              - if environment.try(:last_deployment)
-                View the most recent deployment #{deployment_link(environment.last_deployment)}.
+              View the most recent deployment #{deployment_link(environment.last_deployment)}.
           - elsif @build.complete? && !@build.success?
             The deployment of this build to #{environment_link_for_build(@build.project, @build)} did not succeed.
           - else

spec/views/projects/builds/show.html.haml_spec.rb

@@ -88,16 +88,46 @@ describe 'projects/builds/show', :view do
         create(:ci_build, :running, environment: 'staging', pipeline: pipeline)
       end
 
-      let!(:environment) do
-        create(:environment, name: 'staging', project: project)
+      context 'and environment does exist' do
+        let!(:environment) do
+          create(:environment, name: 'staging', project: project)
+        end
+
+        it 'shows deployment message' do
+          expected_text = 'This build is creating a deployment to staging'
+          render
+
+          expect(rendered).to have_css(
+            '.environment-information', text: expected_text)
+        end
+
+        context 'and has deployment' do
+          let!(:deployment) do
+            create(:deployment, environment: environment)
+          end
+
+          it 'shows that deployment will be overwritten' do
+            expected_text = 'This build is creating a deployment to staging'
+            render
+
+            expect(rendered).to have_css(
+              '.environment-information', text: expected_text)
+            expect(rendered).to have_css(
+              '.environment-information', text: 'latest deployment')
+          end
+        end
       end
 
-      it 'shows deployment message' do
-        expected_text = 'This build is creating a deployment to staging'
-        render
+      context 'and environment does not exist' do
+        it 'shows deployment message' do
+          expected_text = 'This build is creating a deployment to staging'
+          render
 
-        expect(rendered).to have_css(
-          '.environment-information', text: expected_text)
+          expect(rendered).to have_css(
+            '.environment-information', text: expected_text)
+          expect(rendered).not_to have_css(
+            '.environment-information', text: 'latest deployment')
+        end
       end
     end
 
@@ -134,6 +164,8 @@ describe 'projects/builds/show', :view do
 
         expect(rendered).to have_css(
           '.environment-information', text: expected_text)
+        expect(rendered).not_to have_css(
+          '.environment-information', text: 'latest deployment')
       end
     end
   end