<!DOCTYPE HTML>
<html>
<script src='test.js'></script>
<script src='call_function.js'></script>
<script>

function clearCache() {
  getPageCache().cache_ = {};
}

function testCallFunctionNoArgs() {
  clearCache();

  var result = callFunction(null, function() { return 1; }, []);
  assertEquals(0, result.status);
  assertEquals(1, result.value);
}

function testCallFunctionThrows() {
  clearCache();

  var result = callFunction(null, function() { throw new Error('fake error'); },
      []);
  assertEquals(StatusCode.UNKNOWN_ERROR, result.status);
  assertEquals('fake error', result.value);

  result = callFunction(null, function() {
    var e = new Error('fake error');
    e.code = 77;
    e.message = 'CUSTOM';
    throw e;
  }, []);
  assertEquals(77, result.status);
  assertEquals('CUSTOM', result.value);
}

function testCallFunctionArgs() {
  clearCache();

  function func(primitive, elem) {
    return [primitive, elem.querySelector('div')];
  }
  var result = callFunction(null, func, [1, wrap(document)]);
  assertEquals(0, result.status);
  assertEquals(1, result.value[0]);
  var cache = getPageCache();
  assertEquals(document.querySelector('div'), unwrap(result.value[1], cache));
}

function testCallFunctionArgsUnwrappedReturn() {
  clearCache();

  function func(elem) {
    return elem.querySelector('div');
  }
  var result = callFunction(null, func, [wrap(document)], true);
  assertEquals(document.querySelector('div'), result);
}

function testCacheWrap() {
  clearCache();

  assertEquals(1, wrap(1));
  assertEquals(1, unwrap(1));
  assertEquals("1", wrap("1"));
  assertEquals("1", unwrap("1"));
  assertEquals(false, wrap(false));
  assertEquals(false, unwrap(false));
  assertEquals(null, wrap(null));
  assertEquals(null, unwrap(null));
  assertEquals(undefined, wrap(undefined));
  assertEquals(undefined, unwrap(undefined));
  function func() {}
  assertEquals(func, wrap(func));
  assertEquals(func, unwrap(func));

  var cache = getPageCache();
  var arr = [1, new Array(1, new Object({a: 1, b: {a: 1, b: {}, c: 3}}), 3)];
  var originalJson = JSON.stringify(arr);
  arr[1][1].b.b[ELEMENT_KEY] = cache.idPrefix_ + '-' + cache.nextId_;
  var wrappedJson = JSON.stringify(arr);
  arr[1][1].b.b = document;
  assertEquals(wrappedJson, JSON.stringify(wrap(arr)));
  var unwrapped = unwrap(JSON.parse(wrappedJson), cache);
  assertEquals(document, unwrapped[1][1].b.b);
  unwrapped[1][1].b.b = {};
  assertEquals(originalJson, JSON.stringify(unwrapped));
}

function testCacheDoubleWrap() {
  clearCache();

  assertEquals(wrap(document)[ELEMENT_KEY], wrap(document)[ELEMENT_KEY]);
}

function testCacheUnwrapThrows() {
  clearCache();

  try {
    var wrapped = {};
    wrapped[ELEMENT_KEY] = '1';
    unwrap(wrapped, getPageCache());
    assert(false);
  } catch (e) {
  }
}

function testClearStale() {
  clearCache();

  var doc = document;
  var div = doc.querySelector('div');
  var span = doc.querySelector('span');

  var wrappedDoc = wrap(doc);
  var wrappedDiv = wrap(div);
  var wrappedSpan = wrap(span);

  var cache = getPageCache();
  cache.clearStale();
  assertEquals(doc, unwrap(wrappedDoc, cache));
  assertEquals(div, unwrap(wrappedDiv, cache));
  assertEquals(span, unwrap(wrappedSpan, cache));

  div.removeChild(span);
  cache.clearStale();
  assertEquals(doc, unwrap(wrappedDoc, cache));
  assertEquals(div, unwrap(wrappedDiv, cache));
  try {
    unwrap(wrappedSpan, cache);
    assert(false);
  } catch (e) {
  }
}

function testCacheQuerySelector() {
  clearCache();

  var cache = getPageCache();
  assertEquals(document.querySelector('div'),
               unwrap(wrap(document.querySelector('div')), cache));
  assertEquals(document.querySelectorAll('div')[0],
               unwrap(wrap(document.querySelectorAll('div')), cache)[0]);
}

function testCacheStaleRef() {
  clearCache();

  var cache = getPageCache();
  var img = document.createElement('img');
  document.body.appendChild(img);
  var wrappedImg = wrap(img);
  document.body.removeChild(img);
  cache.clearStale();
  try {
    unwrap(wrappedImg, cache);
    assert(false);
  } catch (e) {
    assertEquals(StatusCode.STALE_ELEMENT_REFERENCE, e.code);
  }
}

function testCallFunctionWithShadowHost() {
  clearCache();

  // Set up something in the shadow DOM.
  var host = document.body.appendChild(document.createElement('div'));
  var root = host.webkitCreateShadowRoot();
  var shadowDiv = root.appendChild(document.createElement('div'));

  function func(element) {
    return element;
  }
  var wrappedHost = wrap(host);
  
  var result = callFunction(null, func, [wrappedHost]);
  assertEquals(0, result.status);
  assertEquals(wrappedHost['ELEMENT'], result.value['ELEMENT']);
  var cache = getPageCache();
  assertEquals(host, unwrap(result.value, cache));
  
  document.body.removeChild(host);
}

function testCallFunctionWithShadowRoot() {
  clearCache();

  // Set up something in the shadow DOM.
  var host = document.body.appendChild(document.createElement('div'));
  var root = host.webkitCreateShadowRoot();
  var shadowDiv = root.appendChild(document.createElement('div'));

  function func(element) {
    return element;
  }
  var wrappedHost = wrap(host);
  var wrappedRoot = wrap(root);
  
  // Trying without setting the shadow_path should fail.
  var result = callFunction(null, func, [wrappedRoot]);
  assertEquals(StatusCode.STALE_ELEMENT_REFERENCE, result.status);
  // Should succeed with the shadow_path.
  result = callFunction([wrappedHost['ELEMENT']], func, [wrappedRoot]);
  assertEquals(0, result.status);
  assertEquals(wrappedRoot['ELEMENT'], result.value['ELEMENT']);
  var cache = getPageCache(root);
  assertEquals(root, unwrap(result.value, cache));
  
  document.body.removeChild(host);
}

function testCacheWithShadowDomAttached() {
  clearCache();
  var pageCache = getPageCache();
  
  // Set up something in the shadow DOM.
  var host = document.body.appendChild(document.createElement('div'));
  var root = host.webkitCreateShadowRoot();
  var shadowDiv = root.appendChild(document.createElement('div'));
  
  // Test with attached element in shadow DOM.
  var wrappedDiv = wrap(shadowDiv);
  // It should NOT be in the page cache.
  try {
    unwrap(wrappedDiv, pageCache);
    assert(false);
  } catch (e) {
    assertEquals(StatusCode.STALE_ELEMENT_REFERENCE, e.code);
  }
  // It should be in the shadow root cache.
  var rootCache = getPageCache(root);
  rootCache.clearStale();
  var unwrappedDiv = unwrap(wrappedDiv, rootCache);
  assertEquals(shadowDiv, unwrappedDiv);
  
  document.body.removeChild(host);
}

function testCacheWithShadowDomDetachedChild() {
  clearCache();

  // Set up something in the shadow DOM.
  var host = document.body.appendChild(document.createElement('div'));
  var root = host.webkitCreateShadowRoot();
  var shadowDiv = root.appendChild(document.createElement('div'));

  // Test with detached element in shadow DOM.
  var wrappedDiv = wrap(shadowDiv);
  root.removeChild(shadowDiv);
  var rootCache = getPageCache(root);
  rootCache.clearStale();
  try {
    unwrap(wrappedDiv, rootCache);
    assert(false);
  } catch (e) {
    assertEquals(StatusCode.STALE_ELEMENT_REFERENCE, e.code);
  }
  
  document.body.removeChild(host);
}

</script>
<body>
<div><span></span></div>
</body>
</html>