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This commit is contained in:
Fedor Indutny
2022-12-22 16:32:03 -08:00
committed by GitHub
parent f92f81dfd6
commit 55a1c5f6c5
11 changed files with 442 additions and 562 deletions
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62
ts/test-both/util/memoizeByRoot.ts
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// Copyright 2021 Signal Messenger, LLC
// SPDX-License-Identifier: AGPL-3.0-only
import { assert } from 'chai';
import * as sinon from 'sinon';
import { memoizeByRoot } from '../../util/memoizeByRoot';
class Root {}
describe('memoizeByRoot', () => {
it('should memoize by last passed arguments', () => {
const root = new Root();
const stub = sinon.stub();
stub.withArgs(sinon.match.same(root), 1).returns(1);
stub.withArgs(sinon.match.same(root), 2).returns(2);
const fn = memoizeByRoot(stub);
assert.strictEqual(fn(root, 1), 1);
assert.strictEqual(fn(root, 1), 1);
assert.isTrue(stub.calledOnce);
assert.strictEqual(fn(root, 2), 2);
assert.strictEqual(fn(root, 2), 2);
assert.isTrue(stub.calledTwice);
assert.strictEqual(fn(root, 1), 1);
assert.strictEqual(fn(root, 1), 1);
assert.isTrue(stub.calledThrice);
});
it('should memoize results by root', () => {
const rootA = new Root();
const rootB = new Root();
const stub = sinon.stub();
stub.withArgs(sinon.match.same(rootA), 1).returns(1);
stub.withArgs(sinon.match.same(rootA), 2).returns(2);
stub.withArgs(sinon.match.same(rootB), 1).returns(3);
stub.withArgs(sinon.match.same(rootB), 2).returns(4);
const fn = memoizeByRoot(stub);
assert.strictEqual(fn(rootA, 1), 1);
assert.strictEqual(fn(rootB, 1), 3);
assert.strictEqual(fn(rootA, 1), 1);
assert.strictEqual(fn(rootB, 1), 3);
assert.isTrue(stub.calledTwice);
assert.strictEqual(fn(rootA, 2), 2);
assert.strictEqual(fn(rootB, 2), 4);
assert.strictEqual(fn(rootA, 2), 2);
assert.strictEqual(fn(rootB, 2), 4);
assert.strictEqual(stub.callCount, 4);
assert.strictEqual(fn(rootA, 1), 1);
assert.strictEqual(fn(rootB, 1), 3);
assert.strictEqual(stub.callCount, 6);
});
});