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Test Info:

test(function() {
var params = new URLSearchParams('a=1&b=2&c=3');
var keys = [];
var values = [];
params.forEach(function(value, key) {
keys.push(key);
values.push(value);
});
assert_array_equals(keys, ['a', 'b', 'c']);
assert_array_equals(values, ['1', '2', '3']);
}, "ForEach Check");
test(function() {
let a = new URL("http://a.b/c?a=1&b=2&c=3&d=4");
let b = a.searchParams;
var c = [];
for (const i of b) {
a.search = "x=1&y=2&z=3";
c.push(i);
}
assert_array_equals(c[0], ["a","1"]);
assert_array_equals(c[1], ["y","2"]);
assert_array_equals(c[2], ["z","3"]);
}, "For-of Check");
test(function() {
let a = new URL("http://a.b/c");
let b = a.searchParams;
for (const i of b) {
assert_unreached(i);
}
}, "empty");
test(function() {
const searchParams = url.searchParams;
const seen = [];
for (const param of searchParams) {
if (param[0] === 'param0') {
searchParams.delete('param1');
}
seen.push(param);
}
assert_array_equals(seen[0], ["param0", "0"]);
assert_array_equals(seen[1], ["param2", "2"]);
}, "delete next param during iteration");
test(function() {
const searchParams = url.searchParams;
const seen = [];
for (const param of searchParams) {
if (param[0] === 'param0') {
searchParams.delete('param0');
// 'param1=1' is now in the first slot, so the next iteration will see 'param2=2'.
} else {
seen.push(param);
}
}
assert_array_equals(seen[0], ["param2", "2"]);
}, "delete current param during iteration");
test(function() {
const searchParams = url.searchParams;
const seen = [];
for (const param of searchParams) {
seen.push(param[0]);
searchParams.delete(param[0]);
}
assert_array_equals(seen, ["param0", "param2"], "param1 should not have been seen by the loop");
assert_equals(String(searchParams), "param1=1", "param1 should remain");
}, "delete every param seen during iteration");