Originally posted by:linclark see https://github.com/devtools-html/gecko-dev/issues/173 There are some things that we can unit test in the backend. - [ ] console.count() - If called multiple times with label / without label, is the counter incremented? - Are "external counts" handled? See browser_webconsole_count.js - [ ] console.log() - Is the return order of packets from console api calls 1. consoleAPICall, then 2. evaluationResult (currently tested in browser_webconsole_output_order.js) - [ ] console.assert() - `console.assert(true)` does not emit a packet - [ ] page error - "document.querySelector('buggy;selector');", - "throw new DOMException('DOMException');", - [ ] browser_webconsole_strict_mode_errors.js - [ ] browser_webconsole_show_subresource_security_errors.js - [ ] browser_webconsole_netlogging_basic.js - [ ] browser_webconsole_netlogging.js - [ ] browser_webconsole_hsts_invalid-headers.js - [ ] browser_webconsole_hpkp_invalid-headers.js - [ ] browser_webconsole_for_of.js - [ ] browser_webconsole_console_trace_async.js - [ ] browser_webconsole_console_api_stackframe.js - [ ] browser_webconsole_column_numbers.js - [ ] browser_webconsole_bug_646025_console_file_location.js - [ ] browser_webconsole_certificate_messages.js - [ ] browser_webconsole_bug_837351_securityerrors.js - [ ] browser_webconsole_bug_621644_jsterm_dollar.js - [ ] browser_webconsole_bug_618078_network_exceptions.js - [ ] browser_webconsole_bug_603750_websocket.js - [ ] browser_webconsole_bug_597136_external_script_errors.js - [ ] browser_webconsole_bug_595934_message_categories.js - [ ] browser_webconsole_bug_592442_closing_brackets.js - [ ] browser_webconsole_bug_580454_timestamp_l10n.js - [ ] browser_webconsole_bug_1010953_cspro.js - [ ] browser_console_consolejsm_output.js - [ ] browser_webconsole_bug_630733_response_redirect_headers.js