1 files changed, 76 insertions, 0 deletions
diff --git a/testing/web-platform/tests/url/urlsearchparams-foreach.any.js b/testing/web-platform/tests/url/urlsearchparams-foreach.any.js
new file mode 100644
index 0000000000..ff19643ac2
--- /dev/null
+++ b/testing/web-platform/tests/url/urlsearchparams-foreach.any.js
@@ -0,0 +1,76 @@
+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 url = new URL("http://localhost/query?param0=0&param1=1&param2=2");
+    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 url = new URL("http://localhost/query?param0=0&param1=1&param2=2");
+    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 url = new URL("http://localhost/query?param0=0&param1=1&param2=2");
+    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");