Implements login macros

spec/support/login_macros.rb

@@ -0,0 +1,12 @@
+module LoginMacros
+
+  def sign_in(user)
+    visit new_user_session_path
+
+    fill_in 'user_email', with: user.email
+    fill_in 'user_password', with: user.password
+    find(:xpath, "//div[@id='content']//input[@name='commit']").click
+
+    expect(page.has_content?('Signed in successfully')).to be true
+  end
+end