Refs #12: red test

spec/features/author/new_author_spec.rb

@@ -1,28 +1,34 @@
 require 'rails_helper'
 
-describe "New author page", type: :feature do
-
-  it "should render withour error" do
+describe 'New author page', type: :feature do
+  it 'should render withour error' do
     visit new_author_path
   end
 
-  it "should have text input for first name, last name, and homepage" do
+  it 'should have text input for first name, last name, and homepage' do
     visit new_author_path
 
     expect(page).to have_field('First name')
     expect(page).to have_field('Last name')
     expect(page).to have_field('Homepage')
   end
 
-  it "should save the entered values to the database" do
+  it 'should save the entered values to the database' do
     visit new_author_path
 
-    fill_in "author_first_name", :with => 'Alan'
-    fill_in "author_last_name", :with => 'Turing'
-    fill_in "author_homepage", :with => 'http://wikipedia.org/Alan_Turing'
+    fill_in 'author_first_name', with: 'Alan'
+    fill_in 'author_last_name', with: 'Turing'
+    fill_in 'author_homepage', with: 'http://wikipedia.org/Alan_Turing'
     find('input[type="submit"]').click
     expect(Author.find_by_first_name('Alan')).not_to be_nil
-
   end
 
-end
+  it 'should display error messages when the created author is not valid' do
+    visit new_author_path
+    fill_in 'author_first_name', with: 'Alan'
+    fill_in 'author_homepage', with: 'http://wikipedia.org/Alan_Turing'
+    find('input[type="submit"]').click
+
+    expect(page.text).to match(/last name can't be blank/i)
+  end
+end