1 Tests that adding a new event listener from a callback works as expected.
3 On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
6 PASS typeof connection.bandwidth is "number"
7 PASS typeof connection.metered is "boolean"
8 PASS typeof connection.bandwidth is "number"
9 PASS typeof connection.metered is "boolean"
10 PASS typeof connection.bandwidth is "number"
11 PASS typeof connection.metered is "boolean"
12 PASS successfullyParsed is true