Test plaintext trace emails

test/mailers/user_mailer_test.rb

@@ -16,33 +16,37 @@ class UserMailerTest < ActionMailer::TestCase
     email = UserMailer.gpx_success(trace, 100)
 
     assert_match("<em>one</em>, <em>two&amp;three</em>, <em>four&lt;five</em>", email.html_part.body.to_s)
+    assert_match("one, two&three, four<five", email.text_part.body.to_s)
   end
 
   def test_gpx_success_all_traces_link
     trace = create(:trace)
     email = UserMailer.gpx_success(trace, 100)
-    body = Rails::Dom::Testing.html_document_fragment.parse(email.html_part.body)
-
     url = Rails.application.routes.url_helpers.url_for(:controller => "traces", :action => "mine", :host => Settings.server_url, :protocol => Settings.server_protocol)
-    assert_select body, "a[href='#{url}']"
+
+    assert_select Rails::Dom::Testing.html_document_fragment.parse(email.html_part.body),
+                  "a[href='#{url}']"
+    assert_includes email.text_part.body, url
   end
 
   def test_gpx_success_trace_link
     trace = create(:trace)
     email = UserMailer.gpx_success(trace, 100)
-    body = Rails::Dom::Testing.html_document_fragment.parse(email.html_part.body)
-
     url = Rails.application.routes.url_helpers.show_trace_url(trace.user, trace, :host => Settings.server_url, :protocol => Settings.server_protocol)
-    assert_select body, "a[href='#{url}']", :text => trace.name
+
+    assert_select Rails::Dom::Testing.html_document_fragment.parse(email.html_part.body),
+                  "a[href='#{url}']", :text => trace.name
+    assert_includes email.text_part.body, url
   end
 
   def test_gpx_failure_no_trace_link
     trace = create(:trace)
     email = UserMailer.gpx_failure(trace, "some error")
-    body = Rails::Dom::Testing.html_document_fragment.parse(email.html_part.body)
-
     url = Rails.application.routes.url_helpers.show_trace_url(trace.user, trace, :host => Settings.server_url, :protocol => Settings.server_protocol)
-    assert_select body, "a[href='#{url}']", :count => 0
+
+    assert_select Rails::Dom::Testing.html_document_fragment.parse(email.html_part.body),
+                  "a[href='#{url}']", :count => 0
+    assert_not_includes email.text_part.body, url
   end
 
   def test_html_encoding