Added alt text to the Canada Wordmark (#91)

* added alt text to the canada wordmark

* added some pytest config and fixed the broken tests

notifications_utils/jinja_templates/email_preview_template.jinja2

@@ -83,7 +83,7 @@
         <div style="margin: 10px 0 20px 0; float: right">
           <img
             src="https://{{ asset_domain }}/canada-logo.png"
-            alt=" "
+            alt="Symbol of the Government of Canada / Symbole du gouvernement du Canada"
             height="55"
             width="123"
           />

notifications_utils/jinja_templates/email_template.jinja2

@@ -174,7 +174,7 @@
           <td style="line-height: 0px; border: 0; padding: 0">
             <img
               src="https://assets.notification.canada.ca/canada-logo.png?20210531"
-              alt=" "
+              alt="Symbol of the Government of Canada / Symbole du gouvernement du Canada"
               width="123"
               height="55"
               border="0"

setup.cfg

@@ -1,5 +1,7 @@
 [tool:pytest]
 xfail_strict=true
+testpaths = tests
+addopts = -p no:warnings -n4
 
 [flake8]
 # W504 line break after binary operator

tests/test_template_types.py

@@ -160,7 +160,7 @@ def test_alt_text_with_no_brand_text_and_fip_banner_english_shown(renderer):
             brand_name="Notify Logo",
         )
     )
-    assert 'alt=" "' in email
+    assert 'alt="Symbol of the Government of Canada / Symbole du gouvernement du Canada"' in email
     assert 'alt="Notify Logo"' in email
 
 
@@ -177,7 +177,7 @@ def test_alt_text_with_no_brand_text_and_fip_banner_french_shown(renderer):
             brand_name="Notify Logo",
         )
     )
-    assert 'alt=" "' in email
+    assert 'alt="Symbol of the Government of Canada / Symbole du gouvernement du Canada"' in email
     assert 'alt="Notify Logo"' in email