<!DOCTYPE html>
<head>
  <meta name="timeout" content="long">
  <meta name="variant" content="?01-05">
  <meta name="variant" content="?06-10">
  <meta name="variant" content="?11-15">
  <meta name="variant" content="?16-20">
  <meta name="variant" content="?21-25">
  <meta name="variant" content="?26-30">
  <meta name="variant" content="?31-35">
  <meta name="variant" content="?36-last">
  <script src="/resources/testharness.js"></script>
  <script src="/resources/testharnessreport.js"></script>
  <script src="support/navigation-support.js"></script>
  <script src="/common/subset-tests.js"></script>
</head>
<body>
<script>
  "use strict";

  function violationMessage(sample) {
    return e => {
      const result = (e.data.effectiveDirective == "require-trusted-types-for" &&
                         (!sample || e.data.sample.startsWith(sample)));
      if (result) {
        assert_true(true, "Expected violation as message: " + sample);
      }

      return result;
    };
  }

  function loadedMessage(searchParams, originAndPathName) {
    return e => {
      if (e.data.type != "DOMContentLoaded") {
        return false;
      }
      let url = new URL(e.data.uri);
      if (!url.pathname.endsWith(originAndPathName)) {
        return false;
      }
      let keys = Object.keys(searchParams);
      if (url.searchParams.size != keys.length ||
          !keys.every(key =>
            url.searchParams.get(key) === searchParams[key].toString())) {
        return false;
      }

      assert_true(true, `Expected loaded as message: ${joinToHref(searchParams, originAndPathName)}`);
      return true;
    };
  }

  function openWindowAndWaitMessages(test, uri, expectedMessages) {
    const win = window.open(uri);
    let messageSeen = (new Array(expectedMessages.length)).fill(false);
    return new Promise((resolve, reject) => {
      function listener(e) {
        let receivedUnexpectedMessage = true;
        expectedMessages.forEach((message, index) => {
          if (message(e)) {
            receivedUnexpectedMessage = false;
            if (!messageSeen[index]) {
              messageSeen[index] = true;
              if (messageSeen.every(seen => seen)) {
                resolve();
              }
            }
          }
        });
        if (receivedUnexpectedMessage) {
          reject(`Unexpected message received: ${JSON.stringify(e.data)}`);
        }
      }
      test.add_cleanup(_ => {
        window.removeEventListener("message", listener);
        win.close();
      });
      window.addEventListener("message", listener);
    });
  }

  // When adding more elements, adapt all functions consuming the existing elements.
  const kNavigationElements =
  [
    "anchor",
    "area",
    "form-submission",
  ];

  function maybeAddNavigationElementToSearchParams(navigationElement, searchParams) {
    if (navigationElement == "anchor") {
      return searchParams;
    }
    let extraParam = {};
    extraParam[navigationElement] = 1;
    return Object.assign(extraParam, searchParams);
  }

  function joinToHref(searchParams, originAndPathName) {
    let urlSearchParams = new URLSearchParams(searchParams);
    if (urlSearchParams.size > 0) {
      return originAndPathName + "?" + urlSearchParams.toString();
    }

    return originAndPathName;
  }

  const kNavigationSupport = "navigation-support.html";
  const kNavigationSupportReportOnly = "navigation-report-only-support.html";

  for (const navigationElement of kNavigationElements) {
    subsetTest(promise_test, t => {
      const params = maybeAddNavigationElementToSearchParams(navigationElement, {});
      return openWindowAndWaitMessages(t, `support/${joinToHref(params, kNavigationSupport)}`, [
        loadedMessage(params, kNavigationSupport),
        violationMessage("Location href"),
      ]);
    }, `Navigate a window via ${navigationElement} with javascript:-urls in enforcing mode.`);

    subsetTest(promise_test, t => {
      const params = maybeAddNavigationElementToSearchParams(navigationElement, {defaultpolicy: 'replace'});
      return openWindowAndWaitMessages(t, `support/${joinToHref(params, kNavigationSupport)}`, [
        loadedMessage(params, kNavigationSupport),
        loadedMessage(Object.assign({navigationattempted: 1, defaultpolicywashere: 1}, params), kNavigationSupport),
      ]);
    }, `Navigate a window via ${navigationElement} with javascript:-urls w/ default policy in enforcing mode.`);

    subsetTest(promise_test, t => {
      const params = maybeAddNavigationElementToSearchParams(navigationElement, {});
      return openWindowAndWaitMessages(t, `support/${joinToHref(params, kNavigationSupportReportOnly)}`, [
        loadedMessage(params, kNavigationSupportReportOnly),
        violationMessage("Location href"),
        loadedMessage(Object.assign({navigationattempted: 1, continue: 1}, params), kNavigationSupport),
      ]);
    }, `Navigate a window via ${navigationElement} with javascript:-urls in report-only mode.`);

    subsetTest(promise_test, t => {
      const params = maybeAddNavigationElementToSearchParams(navigationElement, {defaultpolicy: 'replace'});
      return openWindowAndWaitMessages(t, `support/${joinToHref(params, kNavigationSupportReportOnly)}`, [
        loadedMessage(params, kNavigationSupportReportOnly),
        loadedMessage(Object.assign({navigationattempted: 1, defaultpolicywashere: 1}, params), kNavigationSupport),
      ]);
    }, `Navigate a window via ${navigationElement} with javascript:-urls w/ default policy in report-only mode.`);

    subsetTest(promise_test, t => {
      const params = maybeAddNavigationElementToSearchParams(navigationElement, {frame: 1});
      return openWindowAndWaitMessages(t, `support/${joinToHref(params, kNavigationSupport)}`, [
        loadedMessage(params, kNavigationSupport),
        violationMessage("Location href"),
      ]);
    }, `Navigate a frame via ${navigationElement} with javascript:-urls in enforcing mode.`);

    subsetTest(promise_test, t => {
      const params = maybeAddNavigationElementToSearchParams(navigationElement,
        {defaultpolicy: 'replace', frame: 1});
      return openWindowAndWaitMessages(t, `support/${joinToHref(params, kNavigationSupport)}`, [
        loadedMessage(params, kNavigationSupport),
        loadedMessage(Object.assign({navigationattempted: 1, defaultpolicywashere: 1}, params), kNavigationSupport),
      ]);
    }, `Navigate a frame via ${navigationElement} with javascript:-urls w/ default policy in enforcing mode.`);

    subsetTest(promise_test, t => {
      const params = maybeAddNavigationElementToSearchParams(navigationElement, {frame: 1})
      return openWindowAndWaitMessages(t, `support/${joinToHref(params, kNavigationSupportReportOnly)}`, [
        loadedMessage(params, kNavigationSupportReportOnly),
        violationMessage("Location href"),
        loadedMessage(Object.assign({navigationattempted: 1, continue: 1}, params), kNavigationSupport),
      ]);
    }, `Navigate a frame via ${navigationElement} with javascript:-urls in report-only mode.`);

    subsetTest(promise_test, t => {
      const params = maybeAddNavigationElementToSearchParams(navigationElement,
                                                          {defaultpolicy: 'replace', frame: 1});
      return openWindowAndWaitMessages(t, `support/${joinToHref(params, kNavigationSupportReportOnly)}`, [
        loadedMessage(params, kNavigationSupportReportOnly),
        loadedMessage(Object.assign({navigationattempted: 1, defaultpolicywashere: 1}, params), kNavigationSupport),
      ]);
    }, `Navigate a frame via ${navigationElement} with javascript:-urls w/ default policy in report-only mode.`);

    subsetTest(promise_test, t => {
      // This test navigates to a 'javascript:location.href=...' URL with a CSP
      // policy in enforcing mode and a default policy throwing an exception.
      // "require-trusted-types-for Pre-Navigation check" returns "Blocked"
      // per step 4 of https://w3c.github.io/trusted-types/dist/spec/#require-trusted-types-for-pre-navigation-check
      // Then a violation is reported and the navigation is blocked per steps 4 and 5 of https://w3c.github.io/webappsec-csp/#should-block-navigation-request
      const params = maybeAddNavigationElementToSearchParams(navigationElement, {defaultpolicy: 'throw'});
      return openWindowAndWaitMessages(t, `support/${joinToHref(params, kNavigationSupport)}`, [
        loadedMessage(params, kNavigationSupport),
        violationMessage("Location href"),
      ]);
    }, `Navigate a window via ${navigationElement} with javascript:-urls w/ a default policy throwing an exception in enforcing mode.`);

    subsetTest(promise_test, t => {
      // This test navigates to a 'javascript:location.href=...' URL with a CSP
      // policy in report-only mode and a default policy throwing an exception.
      // "require-trusted-types-for Pre-Navigation check" returns "Blocked"
      // per step 4 of https://w3c.github.io/trusted-types/dist/spec/#require-trusted-types-for-pre-navigation-check
      // Then a violation is reported per step 4 of https://w3c.github.io/webappsec-csp/#should-block-navigation-request
      // The "location.href=..." is executed, causing a second navigation.
      const params = maybeAddNavigationElementToSearchParams(navigationElement, {defaultpolicy: 'throw'});
      return openWindowAndWaitMessages(t, `support/${joinToHref(params, kNavigationSupportReportOnly)}`, [
        loadedMessage(params, kNavigationSupportReportOnly),
        violationMessage("Location href"),
        loadedMessage(Object.assign({navigationattempted: 1, continue: 1}, params), kNavigationSupport),
      ]);
    }, `Navigate a window via ${navigationElement} with javascript:-urls w/ a default policy throwing an exception in report-only mode.`);

    subsetTest(promise_test, t => {
      // This test navigates to a 'javascript:location.href=...' URL with a CSP
      // policy in enforcing mode and a default policy making the URL invalid.
      // "require-trusted-types-for Pre-Navigation check" returns "Blocked"
      // per step 6 of https://w3c.github.io/trusted-types/dist/spec/#require-trusted-types-for-pre-navigation-check
      // Then a violation is reported and the navigation is blocked per steps 4 and 5 of https://w3c.github.io/webappsec-csp/#should-block-navigation-request
      const params = maybeAddNavigationElementToSearchParams(navigationElement, {defaultpolicy: 'make-invalid'});
      return openWindowAndWaitMessages(t, `support/${joinToHref(params, kNavigationSupport)}`, [
        loadedMessage(params, kNavigationSupport),
        violationMessage("Location href"),
      ]);
    }, `Navigate a window via ${navigationElement} with javascript:-urls w/ a default policy making the URL invalid in enforcing mode.`);

    subsetTest(promise_test, t => {
      // This test navigates to a 'javascript:location.href=...' URL with a CSP
      // policy in report-only mode and a default policy making the URL invalid.
      // "require-trusted-types-for Pre-Navigation check" returns "Blocked"
      // per step 6 of https://w3c.github.io/trusted-types/dist/spec/#require-trusted-types-for-pre-navigation-check
      // Then a violation is reported per step 4 of https://w3c.github.io/webappsec-csp/#should-block-navigation-request
      // The "location.href=..." is executed, causing a second navigation.
      const params = maybeAddNavigationElementToSearchParams(navigationElement, {defaultpolicy: 'make-invalid'});
      return openWindowAndWaitMessages(t, `support/${joinToHref(params, kNavigationSupportReportOnly)}`, [
        loadedMessage(params, kNavigationSupportReportOnly),
        violationMessage("Location href"),
        loadedMessage(Object.assign({navigationattempted: 1, continue: 1}, params), kNavigationSupport),
      ]);
    }, `Navigate a window via ${navigationElement} with javascript:-urls w/ a default policy making the URL invalid in report-only mode.`);
  }
</script>
</body>