This is not doing much ATM

spec/views/welcome/index_spec.rb

@@ -0,0 +1,8 @@
+describe 'welcome/index.html.erb' do
+  it 'presents data' do
+    assign(:metrics, [create(:glucose_measurement)])
+    assign(:widest, 4)
+    render
+    expect(rendered).to have_content 'Glucose'
+  end
+end