JS: Add test for URL and URLSearchParams

Author: asgerf

javascript/ql/test/library-tests/TripleDot/urlsearchparams.js

@@ -0,0 +1,15 @@
+function u1() {
+    const searchParams = new URLSearchParams(source("u1.1"));
+    sink(searchParams.get("x")); // $ MISSING: hasTaintFlow=u1.1
+    sink(searchParams.get(unknown())); // $ MISSING: hasTaintFlow=u1.1
+    sink(searchParams.getAll("x")); // $ MISSING: hasTaintFlow=u1.1
+    sink(searchParams.getAll(unknown())); // $ MISSING: hasTaintFlow=u1.1
+}
+
+function u2() {
+    const url = new URL(source("u2.1"));
+    sink(url.searchParams.get("x")); // $ MISSING: hasTaintFlow=u2.1
+    sink(url.searchParams.get(unknown())); // $ MISSING: hasTaintFlow=u2.1
+    sink(url.searchParams.getAll("x")); // $ MISSING: hasTaintFlow=u2.1
+    sink(url.searchParams.getAll(unknown())); // $ MISSING: hasTaintFlow=u2.1
+}