URL: stripping of tab and newlines in setters

For whatwg/url#419.

url/url-setters-stripping.any.js

@@ -0,0 +1,79 @@
+function urlString({ scheme = "https",
+                     username = "username",
+                     password = "password",
+                     host = "host",
+                     port = "8000",
+                     pathname = "path",
+                     search = "query",
+                     hash = "fragment" }) {
+  return `${scheme}://${username}:${password}@${host}:${port}/${pathname}?${search}#${hash}`;
+}
+
+function urlRecord() {
+  return new URL(urlString({}));
+}
+
+for(let i = 0; i < 0x20; i++) {
+  const stripped = i === 0x09 || i === 0x0A || i === 0x0D;
+
+  // It turns out that user agents are surprisingly similar for these ranges so generate fewer
+  // tests. If this is changed also change the logic for host below.
+  if (i !== 0 && i !== 0x1F && !stripped) {
+    continue;
+  }
+
+  const cpString = String.fromCodePoint(i);
+  const cpReference = "U+" + i.toString(16).toUpperCase().padStart(4, "0");
+
+  test(() => {
+    const expected = stripped ? "http" : "https";
+    const url = urlRecord();
+    url.protocol = String.fromCodePoint(i) + "http";
+    assert_equals(url.protocol, expected + ":", "property");
+    assert_equals(url.href, urlString({ scheme: expected }), "href");
+  }, `Setting protocol with leading ${cpReference}`);
+
+  for (const property of ["username", "password"]) {
+    test(() => {
+      const expected = stripped ? "test" : encodeURIComponent(cpString) + "test";
+      const url = urlRecord();
+      url[property] = String.fromCodePoint(i) + "test";
+      assert_equals(url[property], expected, "property");
+      assert_equals(url.href, urlString({ [property]: expected }), "href");
+    }, `Setting ${property} with leading ${cpReference}`);
+  }
+
+  test(() => {
+    const expected = i === 0x00 ? "host" : stripped ? "test" : cpString + "test";
+    const url = urlRecord();
+    url.host = String.fromCodePoint(i) + "test";
+    assert_equals(url.host, expected + ":8000", "property");
+    assert_equals(url.href, urlString({ host: expected }), "href");
+  }, `Setting host with leading ${cpReference}`);
+
+  test(() => {
+    const expected = i === 0x00 ? "host" : stripped ? "test" : cpString + "test";
+    const url = urlRecord();
+    url.hostname = String.fromCodePoint(i) + "test";
+    assert_equals(url.hostname, expected, "property");
+    assert_equals(url.href, urlString({ host: expected }), "href");
+  }, `Setting hostname with leading ${cpReference}`);
+
+  test(() => {
+    const expected = stripped ? "9000" : "8000";
+    const url = urlRecord();
+    url.port = String.fromCodePoint(i) + "9000";
+    assert_equals(url.port, expected, "property");
+    assert_equals(url.href, urlString({ port: expected }), "href");
+  }, `Setting port with leading ${cpReference}`);
+
+  for (const [property, separator] of [["pathname", "/"], ["search", "?"], ["hash", "#"]]) {
+    test(() => {
+      const expected = stripped ? "test" : encodeURIComponent(cpString) + "test";
+      const url = urlRecord();
+      url[property] = String.fromCodePoint(i) + "test";
+      assert_equals(url[property], separator + expected, "property");
+      assert_equals(url.href, urlString({ [property]: expected }), "href");
+    }, `Setting ${property} with leading ${cpReference}`);
+  }
+}