| <!doctype html> |
| <meta charset=utf-8> |
| <title>IndexedDB: Binary keys written to a database and read back</title> |
| <meta name=timeout content=long> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <script src="support.js"></script> |
| <script> |
| |
| const sample = [0x44, 0x33, 0x22, 0x11, 0xFF, 0xEE, 0xDD, 0xCC]; |
| const buffer = new Uint8Array(sample).buffer; |
| |
| function assert_key_valid(a, message) { |
| assert_equals(indexedDB.cmp(a, a), 0, message); |
| } |
| |
| function assert_buffer_equals(a, b, message) { |
| assert_array_equals( |
| Array.from(new Uint8Array(a)), Array.from(new Uint8Array(b)), message); |
| } |
| |
| // Verifies that a JavaScript value round-trips through IndexedDB as a key. |
| function check_key_roundtrip_and_done(t, db, key, key_buffer) { |
| const tx = db.transaction('store', 'readwrite'); |
| const store = tx.objectStore('store'); |
| |
| // Verify put with key |
| const put_request = store.put('value', key); |
| put_request.onerror = t.unreached_func('put should succeed'); |
| |
| // Verify get with key |
| const get_request = store.get(key); |
| get_request.onerror = t.unreached_func('get should succeed'); |
| get_request.onsuccess = t.step_func(() => { |
| assert_equals( |
| get_request.result, 'value', |
| 'get should retrieve the value given to put'); |
| |
| // Verify iteration returning key |
| const cursor_request = store.openCursor(); |
| cursor_request.onerror = t.unreached_func('openCursor should succeed'); |
| cursor_request.onsuccess = t.step_func(() => { |
| assert_not_equals( |
| cursor_request.result, null, 'cursor should be present'); |
| const retrieved_key = cursor_request.result.key; |
| assert_true( |
| retrieved_key instanceof ArrayBuffer, |
| 'IndexedDB binary keys should be returned in ArrayBuffer instances'); |
| assert_key_equals( |
| retrieved_key, key, |
| 'The key returned by IndexedDB should equal the key given to put()'); |
| assert_buffer_equals( |
| retrieved_key, key_buffer, |
| 'The ArrayBuffer returned by IndexedDB should equal the buffer ' + |
| 'backing the key given to put()'); |
| |
| t.done(); |
| }); |
| }); |
| } |
| |
| // Checks that IndexedDB handles the given view type for binary keys correctly. |
| function view_type_test(type) { |
| indexeddb_test( |
| (t, db) => { db.createObjectStore('store'); }, |
| (t, db) => { |
| const key = new self[type](buffer); |
| assert_key_valid(key, `${type} should be usable as an IndexedDB key`); |
| assert_key_equals(key, buffer, |
| 'Binary keys with the same data but different view types should be ' + |
| ' equal'); |
| check_key_roundtrip_and_done(t, db, key, buffer); |
| }, |
| `Binary keys can be supplied using the view type ${type}`, |
| ); |
| } |
| |
| [ |
| 'Uint8Array', |
| 'Uint8ClampedArray', |
| 'Int8Array', |
| 'Uint16Array', |
| 'Int16Array', |
| 'Uint32Array', |
| 'Int32Array', |
| 'Float32Array', |
| 'Float64Array' |
| ].forEach((type) => { view_type_test(type); }); |
| |
| // Checks that IndexedDB |
| function value_test(value_description, value, value_buffer) { |
| indexeddb_test( |
| (t, db) => { db.createObjectStore('store'); }, |
| (t, db) => { |
| assert_key_valid( |
| value, value_description + ' should be usable as an valid key'); |
| check_key_roundtrip_and_done(t, db, value, value_buffer); |
| }, |
| `${value_description} can be used to supply a binary key` |
| ); |
| } |
| |
| value_test('ArrayBuffer', buffer, buffer); |
| value_test('DataView', new DataView(buffer), buffer); |
| value_test('DataView with explicit offset', new DataView(buffer, 3), |
| new Uint8Array([0x11, 0xFF, 0xEE, 0xDD, 0xCC]).buffer); |
| value_test('DataView with explicit offset and length', |
| new DataView(buffer, 3, 4), |
| new Uint8Array([0x11, 0xFF, 0xEE, 0xDD]).buffer); |
| value_test('Uint8Array with explicit offset', new Uint8Array(buffer, 3), |
| new Uint8Array([0x11, 0xFF, 0xEE, 0xDD, 0xCC]).buffer); |
| value_test('Uint8Array with explicit offset and length', |
| new Uint8Array(buffer, 3, 4), |
| new Uint8Array([0x11, 0xFF, 0xEE, 0xDD]).buffer); |
| |
| </script> |
