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Test Info:

[
{
"input": "z=b&a=b&z=a&a=a",
"output": [["a", "b"], ["a", "a"], ["z", "b"], ["z", "a"]]
},
{
"input": "\uFFFD=x&\uFFFC&\uFFFD=a",
"output": [["\uFFFC", ""], ["\uFFFD", "x"], ["\uFFFD", "a"]]
},
{
"input": "ffi&🌈", // 🌈 > code point, but < code unit because two code units
"output": [["🌈", ""], ["ffi", ""]]
},
{
"input": "é&e\uFFFD&e\u0301",
"output": [["e\u0301", ""], ["e\uFFFD", ""], ["é", ""]]
},
{
"input": "z=z&a=a&z=y&a=b&z=x&a=c&z=w&a=d&z=v&a=e&z=u&a=f&z=t&a=g",
"output": [["a", "a"], ["a", "b"], ["a", "c"], ["a", "d"], ["a", "e"], ["a", "f"], ["a", "g"], ["z", "z"], ["z", "y"], ["z", "x"], ["z", "w"], ["z", "v"], ["z", "u"], ["z", "t"]]
},
{
"input": "bbb&bb&aaa&aa=x&aa=y",
"output": [["aa", "x"], ["aa", "y"], ["aaa", ""], ["bb", ""], ["bbb", ""]]
},
{
"input": "z=z&=f&=t&=x",
"output": [["", "f"], ["", "t"], ["", "x"], ["z", "z"]]
},
{
"input": "a🌈&a💩",
"output": [["a🌈", ""], ["a💩", ""]]
}
].forEach((val) => {
test(() => {
let params = new URLSearchParams(val.input),
i = 0
params.sort()
for(let param of params) {
assert_array_equals(param, val.output[i])
i++
}
}, "Parse and sort: " + val.input)
test(() => {
let url = new URL("?" + val.input, "https://example/")
url.searchParams.sort()
let params = new URLSearchParams(url.search),
i = 0
for(let param of params) {
assert_array_equals(param, val.output[i])
i++
}
}, "URL parse and sort: " + val.input)
})
test(function() {
const url = new URL("http://example.com/?")
url.searchParams.sort()
assert_equals(url.href, "http://example.com/")
assert_equals(url.search, "")
}, "Sorting non-existent params removes ? from URL")