Function runTests

test/fixtures/wpt/common/object-association.js:21–74

(propertyName, equalityOrInequalityAsserter, mustOrMustNotReplace)

};

function runTests(propertyName, equalityOrInequalityAsserter, mustOrMustNotReplace) {
  async_test(t => {
    const iframe = document.createElement("iframe");
    document.body.appendChild(iframe);
    const frame = iframe.contentWindow;

    const before = frame[propertyName];
    assert_implements(before, `window.${propertyName} must be implemented`);

    iframe.onload = t.step_func_done(() => {
      const after = frame[propertyName];
      equalityOrInequalityAsserter(after, before);
    });

    iframe.src = "/common/blank.html";
  }, `Navigating from the initial about:blank ${mustOrMustNotReplace} replace window.${propertyName}`);

  // Per spec, discarding a browsing context should not change any of the global objects.
  test(() => {
    const iframe = document.createElement("iframe");
    document.body.appendChild(iframe);
    const frame = iframe.contentWindow;

    const before = frame[propertyName];
    assert_implements(before, `window.${propertyName} must be implemented`);

    iframe.remove();

    const after = frame[propertyName];
    assert_equals(after, before, `window.${propertyName} should not change after iframe.remove()`);
  }, `Discarding the browsing context must not change window.${propertyName}`);

  // Per spec, document.open() should not change any of the global objects. In historical versions
  // of the spec, it did, so we test here.
  async_test(t => {
    const iframe = document.createElement("iframe");

    iframe.onload = t.step_func_done(() => {
      const frame = iframe.contentWindow;
      const before = frame[propertyName];
      assert_implements(before, `window.${propertyName} must be implemented`);

      frame.document.open();

      const after = frame[propertyName];
      assert_equals(after, before);

      frame.document.close();
    });

    iframe.src = "/common/blank.html";
    document.body.appendChild(iframe);
  }, `document.open() must not replace window.${propertyName}`);
}