Tests that URLSearchParams is iterable.

On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".


PASS pair.length is 2
PASS pair[0] is "key1"
PASS pair[1] is "value1"
PASS pair.length is 2
PASS pair[0] is "key2"
PASS pair[1] is "value2"
PASS pair.length is 2
PASS pair[0] is "key3"
PASS pair[1] is "value3"
PASS iteration_count is 3
PASS successfullyParsed is true

TEST COMPLETE