aws-cdk/test/rwlock.test.js

CDK Toolkit, the command line tool for CDK apps

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
/* eslint-disable import/order */
const os = require("os");
const path = require("path");
const rwlock_1 = require("../lib/api/util/rwlock");
function testDir() {
    return path.join(os.tmpdir(), 'rwlock-tests');
}
test('writer lock excludes other locks', async () => {
    // GIVEN
    const lock = new rwlock_1.RWLock(testDir());
    const w = await lock.acquireWrite();
    // WHEN
    try {
        await expect(lock.acquireWrite()).rejects.toThrow(/currently synthing/);
        await expect(lock.acquireRead()).rejects.toThrow(/currently synthing/);
    }
    finally {
        await w.release();
    }
});
test('reader lock allows other readers but not writers', async () => {
    // GIVEN
    const lock = new rwlock_1.RWLock(testDir());
    const r = await lock.acquireRead();
    // WHEN
    try {
        await expect(lock.acquireWrite()).rejects.toThrow(/currently reading/);
        const r2 = await lock.acquireRead();
        await r2.release();
    }
    finally {
        await r.release();
    }
});
test('can convert writer to reader lock', async () => {
    // GIVEN
    const lock = new rwlock_1.RWLock(testDir());
    const w = await lock.acquireWrite();
    // WHEN
    const r = await w.convertToReaderLock();
    try {
        const r2 = await lock.acquireRead();
        await r2.release();
    }
    finally {
        await r.release();
    }
});
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