Extend main test for service usage page

This adds missing assertions for email and SMS usage, as well as
letters with the help of some additional test data.

Previously we were only checking monthly usage (in other tests).

tests/app/main/views/test_dashboard.py

@@ -1002,15 +1002,31 @@ def test_usage_page(
     mock_get_usage.assert_called_once_with(SERVICE_ONE_ID, 2011)
     mock_get_free_sms_fragment_limit.assert_called_with(SERVICE_ONE_ID, 2011)
 
-    cols = page.find_all('div', {'class': 'govuk-grid-column-one-third'})
     nav = page.find('ul', {'class': 'pill'})
     unselected_nav_links = nav.select('a:not(.pill-item--selected)')
-
     assert normalize_spaces(nav.find('a', {'aria-current': 'page'}).text) == '2011 to 2012 financial year'
     assert normalize_spaces(unselected_nav_links[0].text) == '2010 to 2011 financial year'
     assert normalize_spaces(unselected_nav_links[1].text) == '2009 to 2010 financial year'
-    assert '252,190' in cols[1].text
-    assert 'Text messages' in cols[1].text
+
+    annual_usage = page.find_all('div', {'class': 'govuk-grid-column-one-third'})
+
+    # annual stats are shown in two rows, each with three column; email is col 1
+    email_column = normalize_spaces(annual_usage[0].text + annual_usage[3].text)
+    assert 'Emails' in email_column
+    assert '1,000 sent' in email_column
+
+    sms_column = normalize_spaces(annual_usage[1].text + annual_usage[4].text)
+    assert 'Text messages' in sms_column
+    assert '252,190 sent' in sms_column
+    assert '250,000 free allowance' in sms_column
+    assert '0 free allowance remaining' in sms_column
+    assert '£36.14 spent' in sms_column
+    assert '2,190 at 1.65 pence' in sms_column
+
+    letter_column = normalize_spaces(annual_usage[2].text + annual_usage[5].text)
+    assert 'Letters' in letter_column
+    assert '100 sent' in letter_column
+    assert '£30.00 spent' in letter_column
 
 
 @freeze_time("2012-03-31 12:12:12")
@@ -1834,7 +1850,7 @@ def test_breadcrumb_shows_if_service_is_suspended(
     ['email', 'sms'],
     ['email', 'sms', 'letter'],
 ))
-def test_should_show_usage_on_dashboard(
+def test_service_dashboard_shows_usage(
     client_request,
     service_one,
     mock_get_service_templates,
@@ -1855,6 +1871,6 @@ def test_should_show_usage_on_dashboard(
         'free email allowance '
         '£36.14 '
         'spent on text messages '
-        '£0.00 '
+        '£30.00 '
         'spent on letters'
     )