'use strict'; 
function test_valid_value(property, value, serializedValue){ 
if (_AN_Read_length('length', arguments) < 3) serializedValue = value; 
var stringifiedValue = JSON.stringify(value); 
test(function (){ 
var div = document.getElementById('target') || _AN_Call_createelement('createElement', document, 'div'); 
div.style[property] = ""; 
div.style[property] = value; 
var readValue = div.style.getPropertyValue(property); 
assert_not_equals(readValue, "", "property should be set"); 
if (Array.isArray(serializedValue)) assert_in_array(readValue, serializedValue, "serialization should be sound"); 
 else assert_equals(readValue, serializedValue, "serialization should be canonical"); 
div.style[property] = readValue; 
assert_equals(div.style.getPropertyValue(property), readValue, "serialization should round-trip"); 
} 
, "e.style['" + property + "'] = " + stringifiedValue + " should set the property value"); 
} 
function test_invalid_value(property, value){ 
var stringifiedValue = JSON.stringify(value); 
test(function (){ 
var div = document.getElementById('target') || _AN_Call_createelement('createElement', document, 'div'); 
div.style[property] = ""; 
div.style[property] = value; 
assert_equals(div.style.getPropertyValue(property), ""); 
} 
, "e.style['" + property + "'] = " + stringifiedValue + " should not set the property value"); 
}