ref: copy test_plugins from getsentry

this was not testing anythign in getsentry and makes it difficult to delete a plugin

tests/sentry/plugins/test_plugins.py

@@ -0,0 +1,75 @@
+from django.conf import settings
+
+from sentry.plugins.base import plugins
+from sentry.runner.importer import install_plugin_apps
+from sentry.testutils.cases import TestCase
+
+plugin_slugs = [
+    "amazon-sqs",
+    "asana",
+    "bitbucket",
+    "browsers",
+    "device",
+    "github",
+    "gitlab",
+    "heroku",
+    "interface_types",
+    "javaplugin",
+    "javascriptplugin",
+    "jira",
+    "opsgenie",
+    "os",
+    "pagerduty",
+    "phabricator",
+    "pivotal",
+    "pushover",
+    "redmine",
+    "segment",
+    "sessionstack",
+    "slack",
+    "splunk",
+    "trello",
+    "twilio",
+    "urls",
+    "victorops",
+    "webhooks",
+]
+
+
+sentry_app_names = [
+    "auth_github",
+    "auth_saml2.onelogin",
+    "auth_saml2.generic",
+    "auth_saml2.okta",
+    "auth_saml2.rippling",
+    "auth_saml2.auth0",
+    "jira",
+    "opsgenie",
+    "redmine",
+    "sessionstack",
+    "trello",
+    "twilio",
+]
+
+
+class TestPluginsInstalled(TestCase):
+    def test_plugin_slugs(self):
+        all_plugins = sorted(plugin.slug for plugin in plugins.all(version=None))
+        # issuetrackingplugin2 is a test plugin from sentry pytest utils
+        all_plugins.remove("issuetrackingplugin2")
+        assert all_plugins == plugin_slugs
+
+    def test_sentry_apps(self):
+        install_plugin_apps("sentry.apps", settings)
+
+        normalized_apps = set(
+            map(
+                lambda x: x.replace("sentry_plugins.", "")
+                .replace("sentry.auth.providers.", "auth_")
+                .replace("sentry_", ""),
+                settings.INSTALLED_APPS,
+            )
+        )
+
+        for app in sentry_app_names:
+            assert app in normalized_apps