57 lines
1.7 KiB
JavaScript
57 lines
1.7 KiB
JavaScript
// META: global=window,worker
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// META: title=IndexedDB: Index iteration with cursor updates/deletes
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// META: script=resources/support.js
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'use strict';
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const objStoreValues = [
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{name: 'foo', id: 1},
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{name: 'bar', id: 2},
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{name: 'foo', id: 3},
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{name: 'bar', id: 4},
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];
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const objStoreValuesByIndex = [
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objStoreValues[1],
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objStoreValues[3],
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objStoreValues[0],
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objStoreValues[2],
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];
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const functionsThatShouldNotAffectIteration = [
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(cursor) => cursor.update({}),
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(cursor) => cursor.delete(),
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];
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functionsThatShouldNotAffectIteration.forEach(
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(func) => indexeddb_test(
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(t, db) => {
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const objStore = db.createObjectStore('items', {autoIncrement: true});
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objStore.createIndex('name', 'name', {unique: false});
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objStoreValues.forEach((value) => objStore.add(value));
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},
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(t, db) => {
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const txn = db.transaction('items', 'readwrite');
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const objStore = txn.objectStore('items');
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const nameIndex = objStore.index('name');
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const cursorValues = [];
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nameIndex.openCursor().onsuccess = (evt) => {
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const cursor = evt.target.result;
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if (cursor) {
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func(cursor);
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cursorValues.push(cursor.value);
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cursor.continue();
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} else {
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assert_equals(
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cursorValues.length, 4,
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`Cursor should iterate over 4 records`);
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cursorValues.forEach((value, i) => {
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assert_object_equals(value, objStoreValuesByIndex[i]);
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});
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t.done();
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}
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};
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},
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`Calling ${func} doesn't affect index iteration`));
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