mozilla-central/testing/web-platform/tests/IndexedDB/large-requests-abort.html

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<!doctype html>
<meta charset="utf8">
<meta name="timeout" content="long">
<title>IndexedDB: transactions with large request results are aborted correctly</title>
<link rel="author" href="pwnall@chromium.org" title="Victor Costan">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="resources/support-promises.js"></script>
<script>
'use strict';
// Should be large enough to trigger large value handling in the IndexedDB
// engines that have special code paths for large values.
const wrapThreshold = 128 * 1024;
function populateStore(store) {
store.put({id: 1, key: 'k1', value: largeValue(wrapThreshold, 1) });
store.put({id: 2, key: 'k2', value: ['small-2'] });
store.put({id: 3, key: 'k3', value: largeValue(wrapThreshold, 3) });
store.put({id: 4, key: 'k4', value: ['small-4'] });
}
// Opens index cursors for operations that require open cursors.
//
// onsuccess is called if all cursors are opened successfully. Otherwise,
// onerror will be called at least once.
function openCursors(testCase, index, operations, onerror, onsuccess) {
let pendingCursors = 0;
for (let operation of operations) {
const opcode = operation[0];
const primaryKey = operation[1];
let request;
switch (opcode) {
case 'continue':
request = index.openCursor(
IDBKeyRange.lowerBound(`k${primaryKey - 1}`));
break;
case 'continue-empty':
// k4 is the last key in the data set, so calling continue() will get
// the cursor past the end of the store.
request = index.openCursor(IDBKeyRange.lowerBound('k4'));
break;
default:
continue;
}
operation[2] = request;
++pendingCursors;
request.onsuccess = testCase.step_func(() => {
--pendingCursors;
if (!pendingCursors)
onsuccess();
});
request.onerror = testCase.step_func(onerror);
}
if (!pendingCursors)
onsuccess();
}
function doOperation(testCase, store, index, operation, requestId, results) {
const opcode = operation[0];
const primaryKey = operation[1];
const cursor = operation[2];
return new Promise((resolve, reject) => {
let request;
switch (opcode) {
case 'add': // Tests returning a primary key.
request = store.add(
{ key: `k${primaryKey}`, value: [`small-${primaryKey}`] });
break;
case 'put': // Tests returning a primary key.
request = store.put(
{ key: `k${primaryKey}`, value: [`small-${primaryKey}`] });
break;
case 'put-with-id': // Tests returning success or a primary key.
request = store.put(
{ key: `k${primaryKey}`, value: [`small-${primaryKey}`],
id: primaryKey });
break;
case 'get': // Tests returning a value.
case 'get-empty': // Tests returning undefined.
request = store.get(primaryKey);
break;
case 'getall': // Tests returning an array of values.
request = store.getAll();
break;
case 'error': // Tests returning an error.
request = store.put(
{ key: `k${primaryKey}`, value: [`small-${primaryKey}`] });
break;
case 'continue': // Tests returning a key, primary key, and value.
case 'continue-empty': // Tests returning null.
request = cursor;
cursor.result.continue();
break;
case 'open': // Tests returning a cursor, key, primary key, and value.
case 'open-empty': // Tests returning null.
request = index.openCursor(IDBKeyRange.lowerBound(`k${primaryKey}`));
break;
case 'count': // Tests returning a numeric result.
request = index.count();
break;
};
request.onsuccess = testCase.step_func(() => {
reject(new Error(
'requests should not succeed after the transaction is aborted'));
});
request.onerror = testCase.step_func(event => {
event.preventDefault();
results.push([requestId, request.error]);
resolve();
});
});
}
function abortTest(label, operations) {
promise_test(testCase => {
return createDatabase(testCase, (database, transaction) => {
const store = database.createObjectStore(
'test-store', { autoIncrement: true, keyPath: 'id' });
store.createIndex('test-index', 'key', { unique: true });
populateStore(store);
}).then(database => {
const transaction = database.transaction(['test-store'], 'readwrite');
const store = transaction.objectStore('test-store');
const index = store.index('test-index');
return new Promise((resolve, reject) => {
openCursors(testCase, index, operations, reject, () => {
const results = [];
const promises = [];
for (let i = 0; i < operations.length; ++i) {
const promise = doOperation(
testCase, store, index, operations[i], i, results);
promises.push(promise);
};
transaction.abort();
resolve(Promise.all(promises).then(() => results));
});
});
}).then(results => {
assert_equals(
results.length, operations.length,
'Promise.all should resolve after all sub-promises resolve');
for (let i = 0; i < operations.length; ++i) {
assert_equals(
results[i][0], i,
'error event order should match request order');
assert_equals(
results[i][1].name, 'AbortError',
'transaction aborting should result in AbortError on all requests');
}
});
}, label);
}
abortTest('small values', [
['get', 2],
['count', null],
['continue-empty', null],
['get-empty', 5],
['add', 5],
['open', 2],
['continue', 2],
['get', 4],
['get-empty', 6],
['count', null],
['put-with-id', 5],
['put', 6],
['error', 3],
['continue', 4],
['count', null],
['get-empty', 7],
['open', 4],
['open-empty', 7],
['add', 7],
]);
abortTest('large values', [
['open', 1],
['get', 1],
['getall', 4],
['get', 3],
['continue', 3],
['open', 3],
]);
abortTest('large value followed by small values', [
['get', 1],
['getall', null],
['open', 2],
['continue-empty', null],
['get', 2],
['get-empty', 5],
['count', null],
['continue-empty', null],
['open-empty', 5],
['add', 5],
['error', 1],
['continue', 2],
['get-empty', 6],
['put-with-id', 5],
['put', 6],
]);
abortTest('large values mixed with small values', [
['get', 1],
['get', 2],
['get-empty', 5],
['count', null],
['continue-empty', null],
['open', 1],
['continue', 2],
['open-empty', 5],
['getall', 4],
['open', 2],
['continue-empty', null],
['add', 5],
['get', 3],
['count', null],
['get-empty', 6],
['put-with-id', 5],
['getall', null],
['continue', 3],
['open-empty', 6],
['put', 6],
['error', 1],
['continue', 2],
['open', 4],
['get-empty', 7],
['count', null],
['continue', 3],
['add', 7],
['getall', null],
['error', 3],
['count', null],
]);
</script>