CONSOLE ERROR: line 1: Uncaught ReferenceError: undefined_variable is not defined
This is a testharness.js-based test.
FAIL window.onerror - runtime error in setInterval assert_equals: second arg expected "http://web-platform.test:8001/html/webappapis/scripting/processing-model-2/runtime-error-in-setInterval.html" "file:///.../html/webappapis/scripting/processing-model-2/runtime-error-in-setInterval.html" but got ""
PASS window.onerror - runtime error in setInterval (column) 
Harness: the test ran to completion.