1 files changed, 65 insertions, 0 deletions
diff --git a/tests/unit/urlpattern_test.ts b/tests/unit/urlpattern_test.ts
new file mode 100644
index 000000000..7730dbe40
--- /dev/null
+++ b/tests/unit/urlpattern_test.ts
@@ -0,0 +1,65 @@
+// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
+import { assert, assertEquals } from "./test_util.ts";
+import { assertType, IsExact } from "@test_util/std/testing/types.ts";
+
+Deno.test(function urlPatternFromString() {
+  const pattern = new URLPattern("https://deno.land/foo/:bar");
+  assertEquals(pattern.protocol, "https");
+  assertEquals(pattern.hostname, "deno.land");
+  assertEquals(pattern.pathname, "/foo/:bar");
+
+  assert(pattern.test("https://deno.land/foo/x"));
+  assert(!pattern.test("https://deno.com/foo/x"));
+  const match = pattern.exec("https://deno.land/foo/x");
+  assert(match);
+  assertEquals(match.pathname.input, "/foo/x");
+  assertEquals(match.pathname.groups, { bar: "x" });
+
+  // group values should be nullable
+  const val = match.pathname.groups.val;
+  assertType<IsExact<typeof val, string | undefined>>(true);
+});
+
+Deno.test(function urlPatternFromStringWithBase() {
+  const pattern = new URLPattern("/foo/:bar", "https://deno.land");
+  assertEquals(pattern.protocol, "https");
+  assertEquals(pattern.hostname, "deno.land");
+  assertEquals(pattern.pathname, "/foo/:bar");
+
+  assert(pattern.test("https://deno.land/foo/x"));
+  assert(!pattern.test("https://deno.com/foo/x"));
+  const match = pattern.exec("https://deno.land/foo/x");
+  assert(match);
+  assertEquals(match.pathname.input, "/foo/x");
+  assertEquals(match.pathname.groups, { bar: "x" });
+});
+
+Deno.test(function urlPatternFromInit() {
+  const pattern = new URLPattern({
+    pathname: "/foo/:bar",
+  });
+  assertEquals(pattern.protocol, "*");
+  assertEquals(pattern.hostname, "*");
+  assertEquals(pattern.pathname, "/foo/:bar");
+
+  assert(pattern.test("https://deno.land/foo/x"));
+  assert(pattern.test("https://deno.com/foo/x"));
+  assert(!pattern.test("https://deno.com/bar/x"));
+
+  assert(pattern.test({ pathname: "/foo/x" }));
+});
+
+Deno.test(function urlPatternWithPrototypePollution() {
+  const originalExec = RegExp.prototype.exec;
+  try {
+    RegExp.prototype.exec = () => {
+      throw Error();
+    };
+    const pattern = new URLPattern({
+      pathname: "/foo/:bar",
+    });
+    assert(pattern.test("https://deno.land/foo/x"));
+  } finally {
+    RegExp.prototype.exec = originalExec;
+  }
+});