1632145 - Prevent errors being thrown during test runs

Status: NEW

(Firefox :: Remote Settings Client, task)

Description

[Dale Harvey (:daleharvey)]

Running

$ ./mach test toolkit/components/search/tests/xpcshell/test_webextensions_install.js

gives me

 0:10.69 INFO "CONSOLE_MESSAGE: (error) [JavaScript Error: "IndexedDB: blocklists/plugins list() IndexedDB:  execute() The application is shutting down" {file: "resource://services-settings/Database.jsm" line: 28}]
IndexedDBError@resource://services-settings/Database.jsm:28:5
list@resource://services-settings/Database.jsm:88:13
async*get@resource://services-settings/RemoteSettingsClient.jsm:327:32
async*_updateEntries@resource://gre/modules/Blocklist.jsm:656:40
_ensureEntries@resource://gre/modules/Blocklist.jsm:640:18
async*getState@resource://gre/modules/Blocklist.jsm:907:16
getPluginBlocklistState@resource://gre/modules/Blocklist.jsm:1448:30
getPluginBlocklistState@resource://gre/modules/addonManager.js:375:24
_execute_test@/Users/dale/src/gecko/testing/xpcshell/head.js:648:16
@-e:1:1
"

In the shell, the error does not effect the test in any way, but it makes the output confusing particularly when the test does have a failure and we are trying to locate it, so attempting to trim down the tests logging unnecessary errors