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<!DOCTYPE html>
<meta charset="utf-8">
<title>Key Generator behavior with explicit keys generator overflow</title>
<link rel=help href="https://w3c.github.io/IndexedDB/#key-generator-construct">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="resources/support.js"></script>
<script>
function big_key_test(key, description) {
indexeddb_test(
(t, db) => {
assert_equals(indexedDB.cmp(key, key), 0, 'Key is valid');
db.createObjectStore('store', {autoIncrement: true});
},
(t, db) => {
const tx = db.transaction('store', 'readwrite', {durability: 'relaxed'});
const store = tx.objectStore('store');
const value = 0;
let request;
request = store.put(value);
request.onerror = t.unreached_func('put should succeed');
request.onsuccess = t.step_func(e => {
assert_equals(e.target.result, 1,
'Key generator should initially be 1');
});
request = store.put(value);
request.onerror = t.unreached_func('put should succeed');
request.onsuccess = t.step_func(e => {
assert_equals(e.target.result, 2,
'Key generator should increment');
});
request = store.put(value, 1000);
request.onerror = t.unreached_func('put should succeed');
request.onsuccess = t.step_func(e => {
assert_equals(e.target.result, 1000,
'Explicit key should be used');
});
request = store.put(value);
request.onerror = t.unreached_func('put should succeed');
request.onsuccess = t.step_func(e => {
assert_equals(e.target.result, 1001,
'Key generator should have updated');
});
request = store.put(value, key);
request.onerror = t.unreached_func('put should succeed');
request.onsuccess = t.step_func(e => {
assert_equals(e.target.result, key,
'Explicit key should be used');
});
if (key >= 0) {
// Large positive values will max out the key generator, so it
// can no longer produce keys.
request = store.put(value);
request.onsuccess = t.unreached_func('put should fail');
request.onerror = t.step_func(e => {
e.preventDefault();
assert_equals(e.target.error.name, 'ConstraintError',
'Key generator should have returned failure');
});
} else {
// Large negative values are always lower than the key generator's
// current number, so have no effect on the generator.
request = store.put(value);
request.onerror = t.unreached_func('put should succeed');
request.onsuccess = t.step_func(e => {
assert_equals(e.target.result, 1002,
'Key generator should have updated');
});
}
request = store.put(value, 2000);
request.onerror = t.unreached_func('put should succeed');
request.onsuccess = t.step_func(e => {
assert_equals(e.target.result, 2000,
'Explicit key should be used');
});
tx.onabort = t.step_func(() => {
assert_unreached(`Transaction aborted: ${tx.error.message}`);
});
tx.oncomplete = t.step_func(() => { t.done(); });
},
description);
}
[
{
key: Number.MAX_SAFE_INTEGER + 1,
description: '53 bits'
},
{
key: Math.pow(2, 60),
description: 'greater than 53 bits, less than 64 bits'
},
{
key: -Math.pow(2, 60),
description: 'greater than 53 bits, less than 64 bits (negative)'
},
{
key: Math.pow(2, 63),
description: '63 bits'
},
{
key: -Math.pow(2, 63),
description: '63 bits (negative)'
},
{
key: Math.pow(2, 64),
description: '64 bits'
},
{
key: -Math.pow(2, 64),
description: '64 bits (negative)'
},
{
key: Math.pow(2, 70),
description: 'greater than 64 bits, but still finite'
},
{
key: -Math.pow(2, 70),
description: 'greater than 64 bits, but still finite (negative)'
},
{
key: Infinity,
description: 'equal to Infinity'
},
{
key: -Infinity,
description: 'equal to -Infinity'
}
].forEach(function(testCase) {
big_key_test(testCase.key,
`Key generator vs. explicit key ${testCase.description}`);
});
</script>
|
