1 files changed, 145 insertions, 0 deletions
diff --git a/testing/web-platform/tests/url/urlsearchparams-stringifier.any.js b/testing/web-platform/tests/url/urlsearchparams-stringifier.any.js
new file mode 100644
index 0000000000..6187db64b1
--- /dev/null
+++ b/testing/web-platform/tests/url/urlsearchparams-stringifier.any.js
@@ -0,0 +1,145 @@
+test(function() {
+    var params = new URLSearchParams();
+    params.append('a', 'b c');
+    assert_equals(params + '', 'a=b+c');
+    params.delete('a');
+    params.append('a b', 'c');
+    assert_equals(params + '', 'a+b=c');
+}, 'Serialize space');
+
+test(function() {
+    var params = new URLSearchParams();
+    params.append('a', '');
+    assert_equals(params + '', 'a=');
+    params.append('a', '');
+    assert_equals(params + '', 'a=&a=');
+    params.append('', 'b');
+    assert_equals(params + '', 'a=&a=&=b');
+    params.append('', '');
+    assert_equals(params + '', 'a=&a=&=b&=');
+    params.append('', '');
+    assert_equals(params + '', 'a=&a=&=b&=&=');
+}, 'Serialize empty value');
+
+test(function() {
+    var params = new URLSearchParams();
+    params.append('', 'b');
+    assert_equals(params + '', '=b');
+    params.append('', 'b');
+    assert_equals(params + '', '=b&=b');
+}, 'Serialize empty name');
+
+test(function() {
+    var params = new URLSearchParams();
+    params.append('', '');
+    assert_equals(params + '', '=');
+    params.append('', '');
+    assert_equals(params + '', '=&=');
+}, 'Serialize empty name and value');
+
+test(function() {
+    var params = new URLSearchParams();
+    params.append('a', 'b+c');
+    assert_equals(params + '', 'a=b%2Bc');
+    params.delete('a');
+    params.append('a+b', 'c');
+    assert_equals(params + '', 'a%2Bb=c');
+}, 'Serialize +');
+
+test(function() {
+    var params = new URLSearchParams();
+    params.append('=', 'a');
+    assert_equals(params + '', '%3D=a');
+    params.append('b', '=');
+    assert_equals(params + '', '%3D=a&b=%3D');
+}, 'Serialize =');
+
+test(function() {
+    var params = new URLSearchParams();
+    params.append('&', 'a');
+    assert_equals(params + '', '%26=a');
+    params.append('b', '&');
+    assert_equals(params + '', '%26=a&b=%26');
+}, 'Serialize &');
+
+test(function() {
+    var params = new URLSearchParams();
+    params.append('a', '*-._');
+    assert_equals(params + '', 'a=*-._');
+    params.delete('a');
+    params.append('*-._', 'c');
+    assert_equals(params + '', '*-._=c');
+}, 'Serialize *-._');
+
+test(function() {
+    var params = new URLSearchParams();
+    params.append('a', 'b%c');
+    assert_equals(params + '', 'a=b%25c');
+    params.delete('a');
+    params.append('a%b', 'c');
+    assert_equals(params + '', 'a%25b=c');
+
+    params = new URLSearchParams('id=0&value=%')
+    assert_equals(params + '', 'id=0&value=%25')
+}, 'Serialize %');
+
+test(function() {
+    var params = new URLSearchParams();
+    params.append('a', 'b\0c');
+    assert_equals(params + '', 'a=b%00c');
+    params.delete('a');
+    params.append('a\0b', 'c');
+    assert_equals(params + '', 'a%00b=c');
+}, 'Serialize \\0');
+
+test(function() {
+    var params = new URLSearchParams();
+    params.append('a', 'b\uD83D\uDCA9c');
+    assert_equals(params + '', 'a=b%F0%9F%92%A9c');
+    params.delete('a');
+    params.append('a\uD83D\uDCA9b', 'c');
+    assert_equals(params + '', 'a%F0%9F%92%A9b=c');
+}, 'Serialize \uD83D\uDCA9');  // Unicode Character 'PILE OF POO' (U+1F4A9)
+
+test(function() {
+    var params;
+    params = new URLSearchParams('a=b&c=d&&e&&');
+    assert_equals(params.toString(), 'a=b&c=d&e=');
+    params = new URLSearchParams('a = b &a=b&c=d%20');
+    assert_equals(params.toString(), 'a+=+b+&a=b&c=d+');
+    // The lone '=' _does_ survive the roundtrip.
+    params = new URLSearchParams('a=&a=b');
+    assert_equals(params.toString(), 'a=&a=b');
+
+    params = new URLSearchParams('b=%2sf%2a');
+    assert_equals(params.toString(), 'b=%252sf*');
+
+    params = new URLSearchParams('b=%2%2af%2a');
+    assert_equals(params.toString(), 'b=%252*f*');
+
+    params = new URLSearchParams('b=%%2a');
+    assert_equals(params.toString(), 'b=%25*');
+}, 'URLSearchParams.toString');
+
+test(() => {
+    const url = new URL('http://www.example.com/?a=b,c');
+    const params = url.searchParams;
+
+    assert_equals(url.toString(), 'http://www.example.com/?a=b,c');
+    assert_equals(params.toString(), 'a=b%2Cc');
+
+    params.append('x', 'y');
+
+    assert_equals(url.toString(), 'http://www.example.com/?a=b%2Cc&x=y');
+    assert_equals(params.toString(), 'a=b%2Cc&x=y');
+}, 'URLSearchParams connected to URL');
+
+test(() => {
+    const url = new URL('http://www.example.com/');
+    const params = url.searchParams;
+
+    params.append('a\nb', 'c\rd');
+    params.append('e\n\rf', 'g\r\nh');
+
+    assert_equals(params.toString(), "a%0Ab=c%0Dd&e%0A%0Df=g%0D%0Ah");
+}, 'URLSearchParams must not do newline normalization');