add tests

app/main/views/platform_admin.py

@@ -15,7 +15,12 @@ from app import (
 )
 from app.extensions import antivirus_client, redis_client
 from app.main import main
-from app.main.forms import DateFilterForm, PDFUploadForm, ReturnedLettersForm, ClearCacheForm
+from app.main.forms import (
+    ClearCacheForm,
+    DateFilterForm,
+    PDFUploadForm,
+    ReturnedLettersForm,
+)
 from app.statistics_utils import (
     get_formatted_percentage,
     get_formatted_percentage_two_dp,

app/navigation.py

@@ -303,7 +303,6 @@ class MainNavigation(Navigation):
             'check_notification',
             'choose_template',
             'choose_template_to_copy',
-            'clear_cache',
             'confirm_redact_template',
             'conversation_reply',
             'copy_template',

app/templates/views/platform-admin/clear-cache.html

@@ -10,7 +10,7 @@
 {% block platform_admin_content %}
 
   <h1 class="heading-large">
-    Clear Redis Cache
+    Clear Cache
   </h1>
 
   {% call form_wrapper() %}

tests/app/main/views/test_platform_admin.py

@@ -2,7 +2,7 @@ import datetime
 import re
 import uuid
 from functools import partial
-from unittest.mock import ANY
+from unittest.mock import ANY, call
 
 import pytest
 import requests_mock
@@ -858,3 +858,42 @@ def test_letter_validation_preview_doesnt_call_template_preview_when_file_doesnt
 
     page = BeautifulSoup(response.data.decode('utf-8'), 'html.parser')
     assert page.find('div', class_='banner-dangerous').text.strip() == "Document didn't pass the virus scan"
+
+
+def test_clear_cache_shows_form(client_request, platform_admin_user, mocker):
+    redis = mocker.patch('app.main.views.platform_admin.redis_client')
+    client_request.login(platform_admin_user)
+
+    page = client_request.get('main.clear_cache')
+
+    assert page.select('input[type=radio]')[0]['value'] == 'user'
+    assert page.select('input[type=radio]')[1]['value'] == 'service'
+    assert page.select('input[type=radio]')[2]['value'] == 'template'
+    assert not redis.delete_cache_keys_by_pattern.called
+
+
+def test_clear_cache_submits_and_tells_you_how_many_things_were_deleted(client_request, platform_admin_user, mocker):
+    redis = mocker.patch('app.main.views.platform_admin.redis_client')
+    redis.delete_cache_keys_by_pattern.side_effect = [0, 3, 1]
+    client_request.login(platform_admin_user)
+
+    page = client_request.post('main.clear_cache', _data={'model_type': 'template'}, _expected_status=200)
+
+    assert redis.delete_cache_keys_by_pattern.call_args_list == [
+        call('service-????????-????-????-????-????????????-templates'),
+        call('template-????????-????-????-????-????????????-version-*'),
+        call('template-????????-????-????-????-????????????-versions'),
+    ]
+
+    flash_banner = page.find('div', class_='banner-dangerous')
+    assert flash_banner.text.strip() == 'Removed 3 template objects from redis'
+
+
+def test_clear_cache_requires_option(client_request, platform_admin_user,mocker):
+    redis = mocker.patch('app.main.views.platform_admin.redis_client')
+    client_request.login(platform_admin_user)
+
+    page = client_request.post('main.clear_cache', _data={}, _expected_status=200)
+
+    assert normalize_spaces(page.find('span', class_='error-message').text) == 'Not a valid choice'
+    assert not redis.delete_cache_keys_by_pattern.called