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<script>
function log(msg)
{
// alert(msg);
window.webkit.messageHandlers.testHandler.postMessage(msg);
}
function shouldBeType(_a, _type)
{
var exception;
var _av;
try {
_av = eval(_a);
} catch (e) {
exception = e;
}
var _typev = eval(_type);
if (_av instanceof _typev) {
return true;
} else {
return false;
}
}
// Values that are used to infer the type of a given primitive type.
var testValues = [
undefined,
null,
5, // Int
0,
1,
false,
true,
5.5, // Double
"Hello,World!",
""
];
// Values that are used to infer the type of a given Boolean/String type.
var testTypeValues = [
{ item: new Boolean(true), type: "Boolean", value: true },
{ item: new Boolean(false), type: "Boolean", value: false },
{ item: new String(), type: "String", value: "" }
];
indexedDB.deleteDatabase("backward_compatibility");
var openRequest = indexedDB.open("backward_compatibility");
openRequest.onupgradeneeded = function(event) {
// This objectStore stores elements that we only need to check its type to determine its serialization tag.
var objectStore = event.target.result.createObjectStore("type");
// This objectStore stores elements that we need to check its value to determine its serialization tag.
var objectStore = event.target.result.createObjectStore("value", { autoIncrement : true });
// This objectStore stores elements that we need to check both its type and its value to determine its serialization tag.
var objectStore = event.target.result.createObjectStore("typeValue", { autoIncrement : true });
}
openRequest.onerror = function(event) {
log("Error: " + event.target.error.name);
}
openRequest.onsuccess = function(event) {
db = event.target.result;
storeType();
}
function storeType()
{
var transaction = db.transaction("type", "readwrite");
transaction.onerror = function(event) {
log("Error: " + event.target.error.name);
}
transaction.oncomplete = function(event) { storeValue(); }
var objectStore = transaction.objectStore("type");
// The key of an item is the type of its value, hence we could determine type mismatch, i.e. serialization tag reorder
// simply by using an item's key and value.
objectStore.add([1, 2], "Array");
objectStore.add({ property: null }, "Object");
objectStore.add(new Date(), "Date");
objectStore.add(new File(["foo"], "foo.txt"), "File");
objectStore.add(new ImageData(100, 100), "ImageData");
objectStore.add(new Blob(["foo"]), "Blob");
objectStore.add(new RegExp(''), "RegExp");
objectStore.add(new ArrayBuffer(1), "ArrayBuffer");
objectStore.add(new String(''), "String");
objectStore.add(new Number(12), "Number");
objectStore.add(new Set([1, 2]), "Set");
objectStore.add(new Map(), "Map");
// Typed arrays
objectStore.add(new Int8Array(), "Int8Array");
objectStore.add(new Uint8Array(), "Uint8Array");
objectStore.add(new Uint8ClampedArray(), "Uint8ClampedArray");
objectStore.add(new Int16Array(), "Int16Array");
objectStore.add(new Uint16Array(), "Uint16Array");
objectStore.add(new Int32Array(), "Int32Array");
objectStore.add(new Uint32Array(), "Uint32Array");
objectStore.add(new Float32Array(), "Float32Array");
objectStore.add(new Float64Array(), "Float64Array");
}
function storeValue()
{
var transaction = db.transaction("value", "readwrite");
transaction.onerror = function(event) {
log("Error: " + event.target.error.name);
}
transaction.oncomplete = function(event) { storeTypeValue(); }
var objectStore = transaction.objectStore("value");
// Here we store values in the test matrix in order and read them in order to see if any mismatch happens.
for (var i = 0; i < testValues.length; i++)
objectStore.add(testValues[i]);
}
function storeTypeValue()
{
var transaction = db.transaction("typeValue", "readwrite");
transaction.onerror = function(event) {
log("Error: " + event.target.error.name);
}
transaction.oncomplete = function(event) { readType(); }
var objectStore = transaction.objectStore("typeValue");
// Here we store items in the test matrix in order and read them in order to see if any mismatches its type and value.
for (var i = 0; i < testTypeValues.length; i++)
objectStore.add(testTypeValues[i].item);
}
var result = true;
function readType()
{
var objectStore = db.transaction("type").objectStore("type");
objectStore.openCursor().onsuccess = function(event) {
cursor = event.target.result;
if (cursor) {
result = result && shouldBeType("cursor.value", cursor.key);
cursor.continue();
} else
readValue();
};
}
function readValue()
{
var objectStore = db.transaction("value").objectStore("value");
objectStore.openCursor().onsuccess = function(event) {
cursor = event.target.result;
if (cursor) {
result = result && (cursor.value === testValues[cursor.key - 1]);
cursor.continue();
} else
readTypeValue();
};
}
function readTypeValue()
{
var objectStore = db.transaction("typeValue").objectStore("typeValue");
objectStore.openCursor().onsuccess = function(event) {
cursor = event.target.result;
if (cursor) {
result = result && shouldBeType("cursor.value", testTypeValues[cursor.key - 1].type) && (cursor.value == testTypeValues[cursor.key - 1].value);
cursor.continue();
} else {
if (result)
log("Pass");
else
log("Fail");
}
};
}
</script>
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