Jaco Greeff
5f3928a78e
* Add db-diskdown (simple disk-based LRU KV map) * TODOs * Split path based on key mapping * Swap back to in-memory trie
74 lines
2.0 KiB
JavaScript
74 lines
2.0 KiB
JavaScript
// Copyright 2015-2018 authors & contributors of https://github.com/ethereumjs/merkle-patricia-tree
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// Copyright 2017-2018 @polkadot/trie-db authors & contributors
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// This software may be modified and distributed under the terms
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// of the MPL-2.0 license. See the LICENSE file for details.
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import mkdirp from 'mkdirp';
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import toU8a from '@polkadot/util/u8a/toU8a';
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// import diskdown from '@polkadot/db-diskdown/index';
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import Trie from '../src/index';
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// const DISKPATH = `${process.cwd()}/--test--db--`;
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// mkdirp(DISKPATH);
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describe('testing checkpoints', () => {
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let trie, preRoot, postRoot;
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it('sets up the trie', async () => {
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// trie = new Trie(diskdown(DISKPATH));
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trie = new Trie();
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await trie.put(toU8a('do'), toU8a('verb'));
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await trie.put(toU8a('doge'), toU8a('coin'));
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preRoot = trie.root;
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});
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it('should create a checkpoint', async () => {
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await trie.checkpoint();
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});
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it('should save to the cache', async () => {
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await trie.put(toU8a('test'), toU8a('something'));
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await trie.put(toU8a('love'), toU8a('emotion'));
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postRoot = trie.root;
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});
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it('should revert to the orginal root', async () => {
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expect(trie.isCheckpoint).toEqual(true);
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await trie.revert();
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expect(trie.root).toEqual(preRoot);
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expect(trie.isCheckpoint).toEqual(false);
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});
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it('should commit a checkpoint', async () => {
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await trie.checkpoint();
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await trie.put(toU8a('test'), toU8a('something'));
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await trie.put(toU8a('love'), toU8a('emotion'));
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await trie.commit();
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expect(trie.isCheckpoint).toEqual(false);
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expect(trie.root).toEqual(postRoot);
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});
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it('should commit a nested checkpoint', async () => {
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await trie.checkpoint();
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await trie.put(toU8a('test'), toU8a('something else'));
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const root = trie.root;
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await trie.checkpoint();
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await trie.put(toU8a('the feels'), toU8a('emotion'));
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await trie.revert();
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await trie.commit();
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expect(trie.isCheckpoint).toEqual(false);
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expect(trie.root).toEqual(root);
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});
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});
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