Turn on redirects for email_not_received

This is part of the work to make sure user is redirected
to the page they initially were meant to visit after
they sign in.

app/main/views/code_not_received.py

@@ -49,7 +49,8 @@ def check_and_resend_verification_code():
 @main.route('/email-not-received', methods=['GET'])
 @redirect_to_sign_in
 def email_not_received():
-    return render_template('views/email-not-received.html')
+    redirect_url = request.args.get('next')
+    return render_template('views/email-not-received.html', redirect_url=redirect_url)
 
 
 @main.route('/send-new-email-token', methods=['GET'])

app/templates/views/email-not-received.html

@@ -16,7 +16,7 @@
       {{ govukButton({
         "element": "a",
         "text": "Resend email link",
-        "href": url_for('main.resend_email_link')
+        "href": url_for('main.resend_email_link', next=redirect_url)
       }) }}
     </p>
 

tests/app/main/views/test_code_not_received.py

@@ -176,3 +176,28 @@ def test_redirect_to_sign_in_if_not_logged_in(
 
     assert response.location == url_for('main.sign_in', _external=True)
     assert response.status_code == 302
+
+
+@pytest.mark.parametrize('redirect_url', [
+    None,
+    'blob',
+])
+def test_should_render_correct_email_not_received_template_for_active_user(
+    client,
+    api_user_active,
+    mock_get_user_by_email,
+    mock_send_verify_code,
+    redirect_url
+):
+    with client.session_transaction() as session:
+        session['user_details'] = {
+            'id': api_user_active['id'],
+            'email': api_user_active['email_address']}
+    response = client.get(url_for('main.email_not_received', next=redirect_url))
+    assert response.status_code == 200
+
+    page = BeautifulSoup(response.data.decode('utf-8'), 'html.parser')
+    assert page.h1.string == 'Resend email link'
+    # there shouldn't be a form for updating mobile number
+    assert page.find('form') is None
+    assert page.find('a', class_="govuk-button")['href'] == url_for('main.resend_email_link', next=redirect_url)