mirror of
https://github.com/balena-os/balena-supervisor.git
synced 2024-12-23 15:32:24 +00:00
Migrate update-lock tests as integration tests
Update-lock tests now use the actual filesystem for testing, instead of relying on stubs and spies. This commit also fixes a small bug with update-lock that would cause a `PromiseRejectionHandledWarning` when the lock callback would throw.
This commit is contained in:
Felipe Lalanne
parent
0fb1de2a1a
commit
f19f70d690
@ -22,3 +22,4 @@ testfs:
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# when restoring the filesystem
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cleanup:
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- /data/database.sqlite
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- /mnt/root/tmp/balena-supervisor/**/*.lock
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@ -135,7 +135,7 @@ export async function lock<T extends unknown>(
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}
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}
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// Resolve the function passed
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return fn();
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return await fn();
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} finally {
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for (const [id, release] of releases.entries()) {
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// Try to dispose all the locks
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290
test/integration/lib/update-lock.spec.ts
Normal file
290
test/integration/lib/update-lock.spec.ts
Normal file
@ -0,0 +1,290 @@
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import { expect } from 'chai';
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import * as path from 'path';
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import { promises as fs } from 'fs';
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import { testfs } from 'mocha-pod';
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import * as updateLock from '~/lib/update-lock';
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import * as constants from '~/lib/constants';
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import { UpdatesLockedError } from '~/lib/errors';
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import * as config from '~/src/config';
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import * as lockfile from '~/lib/lockfile';
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describe('lib/update-lock', () => {
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describe('abortIfHUPInProgress', () => {
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const breadcrumbFiles = [
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'rollback-health-breadcrumb',
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'rollback-altboot-breadcrumb',
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];
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const breadcrumbsDir = path.join(
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constants.rootMountPoint,
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constants.stateMountPoint,
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);
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const createBreadcrumb = (breadcrumb: string) =>
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testfs({
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[path.join(breadcrumbsDir, breadcrumb)]: '',
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}).enable();
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before(async () => {
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// Ensure the directory exists for all tests
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await fs.mkdir(breadcrumbsDir, { recursive: true });
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});
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it('should throw if any breadcrumbs exist on host', async () => {
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for (const bc of breadcrumbFiles) {
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const testFs = await createBreadcrumb(bc);
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await expect(updateLock.abortIfHUPInProgress({ force: false }))
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.to.eventually.be.rejectedWith('Waiting for Host OS update to finish')
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.and.be.an.instanceOf(UpdatesLockedError);
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await testFs.restore();
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}
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});
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it('should resolve to false if no breadcrumbs on host', async () => {
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// check that there are no breadcrumbs already on the directory
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expect(await fs.readdir(breadcrumbsDir)).to.have.lengthOf(0);
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await expect(
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updateLock.abortIfHUPInProgress({ force: false }),
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).to.eventually.equal(false);
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});
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it('should resolve to true if breadcrumbs are on host but force is passed', async () => {
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for (const bc of breadcrumbFiles) {
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const testFs = await createBreadcrumb(bc);
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await expect(
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updateLock.abortIfHUPInProgress({ force: true }),
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).to.eventually.equal(true);
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await testFs.restore();
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}
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});
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});
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describe('Lock/dispose functionality', () => {
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const testAppId = 1234567;
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const testServiceName = 'test';
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const supportedLockfiles = ['resin-updates.lock', 'updates.lock'];
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const takeLocks = () =>
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Promise.all(
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supportedLockfiles.map((lf) =>
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lockfile.lock(path.join(lockdir(testAppId, testServiceName), lf)),
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),
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);
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const releaseLocks = async () => {
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await Promise.all(
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lockfile.getLocksTaken().map((lock) => lockfile.unlock(lock)),
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);
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// Remove any other lockfiles created for the testAppId
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await Promise.all(
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supportedLockfiles.map((lf) =>
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lockfile.unlock(path.join(lockdir(testAppId, testServiceName), lf)),
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),
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);
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};
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const lockdir = (appId: number, serviceName: string): string =>
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path.join(
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constants.rootMountPoint,
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updateLock.lockPath(appId, serviceName),
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);
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const expectLocks = async (
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exists: boolean,
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msg?: string,
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appId = testAppId,
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serviceName = testServiceName,
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) =>
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expect(
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fs.readdir(lockdir(appId, serviceName)),
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msg,
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).to.eventually.deep.equal(exists ? supportedLockfiles : []);
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before(async () => {
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await config.initialized();
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await config.set({ lockOverride: false });
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// Ensure the directory is available for all tests
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await fs.mkdir(lockdir(testAppId, testServiceName), {
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recursive: true,
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});
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});
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afterEach(async () => {
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// Cleanup all locks between tests
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await releaseLocks();
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});
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it('should take the lock, run the function, then dispose of locks', async () => {
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await expectLocks(
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false,
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'locks should not exist before the lock is taken',
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);
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await expect(
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updateLock.lock(testAppId, { force: false }, () =>
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// At this point the locks should be taken and not removed
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// until this function has been resolved
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expectLocks(true, 'lockfiles should exist while the lock is active'),
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),
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).to.be.fulfilled;
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await expectLocks(
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false,
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'locks should not exist after the lock is released',
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);
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});
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it('should throw UpdatesLockedError if lockfiles exists', async () => {
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// Take the locks before testing
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await takeLocks();
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await expectLocks(true, 'locks should exist before the lock is taken');
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await updateLock
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.lock(testAppId, { force: false }, () =>
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Promise.reject(
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'the lock function should not invoke the callback if locks are taken',
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),
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)
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.catch((err) => expect(err).to.be.instanceOf(UpdatesLockedError));
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// Since the lock-taking failed, there should be no locks to dispose of
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expect(lockfile.getLocksTaken()).to.have.length(0);
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// Restore the locks that were taken at the beginning of the test
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await releaseLocks();
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});
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it('should dispose of taken locks on any other errors', async () => {
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await expectLocks(false, 'locks should not exist before lock is called');
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await expect(
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updateLock.lock(
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testAppId,
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{ force: false },
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// At this point 2 lockfiles have been written, so this is testing
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// that even if the function rejects, lockfiles will be disposed of
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() =>
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expectLocks(
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true,
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'locks should be owned by the calling function',
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).then(() => Promise.reject('Test error')),
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),
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).to.be.rejectedWith('Test error');
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await expectLocks(
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false,
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'locks should be removed if an error happens within the lock callback',
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);
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});
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it('locks all applications before resolving input function', async () => {
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const appIds = [111, 222, 333];
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// Set up necessary lock directories
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await Promise.all(
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appIds.map((id) =>
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fs.mkdir(lockdir(id, testServiceName), { recursive: true }),
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),
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);
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await expect(
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updateLock.lock(appIds, { force: false }, () =>
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// At this point the locks should be taken and not removed
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// until this function has been resolved
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// Both `updates.lock` and `resin-updates.lock` should have been taken
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Promise.all(
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appIds.map((appId) =>
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expectLocks(
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true,
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`locks for app(${appId}) should exist`,
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appId,
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testServiceName,
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),
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),
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),
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),
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).to.eventually.be.fulfilled;
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// Everything that was locked should have been unlocked after function resolves
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await Promise.all(
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appIds.map((appId) =>
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expectLocks(
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false,
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`locks for app(${appId}) should have been released`,
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appId,
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testServiceName,
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),
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),
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).finally(() =>
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// In case the above fails, we need to make sure to cleanup the lockdir
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Promise.all(
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appIds
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.map((appId) =>
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supportedLockfiles.map((lf) =>
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lockfile.unlock(path.join(lockdir(appId, testServiceName), lf)),
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),
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)
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.flat(),
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),
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);
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});
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it('resolves input function without locking when appId is null', async () => {
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await takeLocks();
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await expect(
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updateLock.lock(null as any, { force: false }, () => Promise.resolve()),
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).to.be.fulfilled;
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await expectLocks(
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true,
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'locks should not be touched by an unrelated lock() call',
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);
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await releaseLocks();
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});
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it('unlocks lockfile to resolve function if force option specified', async () => {
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await takeLocks();
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await expect(
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updateLock.lock(testAppId, { force: true }, () =>
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expectLocks(
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true,
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'locks should be deleted and taken again by the lock() call',
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),
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),
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).to.be.fulfilled;
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await expectLocks(
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false,
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'using force gave lock ownership to the callback, so they should now be deleted',
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);
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});
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it('unlocks lockfile to resolve function if lockOverride option specified', async () => {
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await takeLocks();
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// Change the configuration
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await config.set({ lockOverride: true });
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await expect(
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updateLock.lock(testAppId, { force: false }, () =>
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expectLocks(
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true,
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'locks should be deleted and taken again by the lock() call because of the override',
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),
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),
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).to.be.fulfilled;
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await expectLocks(
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false,
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'using lockOverride gave lock ownership to the callback, so they should now be deleted',
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);
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});
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});
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});
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@ -1,319 +0,0 @@
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import { expect } from 'chai';
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import { SinonSpy, SinonStub, spy, stub } from 'sinon';
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import * as path from 'path';
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import { promises as fs } from 'fs';
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import mockFs = require('mock-fs');
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import * as updateLock from '~/lib/update-lock';
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import * as constants from '~/lib/constants';
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import { UpdatesLockedError } from '~/lib/errors';
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import * as config from '~/src/config';
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import * as lockfile from '~/lib/lockfile';
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import * as fsUtils from '~/lib/fs-utils';
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describe('lib/update-lock', () => {
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const appId = 1234567;
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const serviceName = 'test';
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const mockLockDir = ({
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createLockfile = true,
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}: {
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createLockfile?: boolean;
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}) => {
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const lockDirFiles: any = {};
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if (createLockfile) {
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lockDirFiles['updates.lock'] = mockFs.file({
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uid: updateLock.LOCKFILE_UID,
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});
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lockDirFiles['resin-updates.lock'] = mockFs.file({
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uid: updateLock.LOCKFILE_UID,
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});
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}
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mockFs({
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[path.join(
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constants.rootMountPoint,
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updateLock.lockPath(appId),
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serviceName,
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)]: lockDirFiles,
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});
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};
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// TODO: Remove these hooks when we don't need './test/data' as test process's rootMountPoint
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before(() => {
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// @ts-expect-error // Set rootMountPoint for mockFs
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constants.rootMountPoint = '/mnt/root';
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});
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after(() => {
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// @ts-expect-error
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constants.rootMountPoint = process.env.ROOT_MOUNTPOINT;
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});
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describe('lockPath', () => {
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it('should return path prefix of service lockfiles on host', () => {
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expect(updateLock.lockPath(appId)).to.equal(
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`/tmp/balena-supervisor/services/${appId}`,
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);
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expect(updateLock.lockPath(appId, serviceName)).to.equal(
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`/tmp/balena-supervisor/services/${appId}/${serviceName}`,
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);
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});
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});
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describe('abortIfHUPInProgress', () => {
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const breadcrumbFiles = [
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'rollback-health-breadcrumb',
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'rollback-altboot-breadcrumb',
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];
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const mockBreadcrumbs = (breadcrumb?: string) => {
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mockFs({
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[path.join(
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constants.rootMountPoint,
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constants.stateMountPoint,
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breadcrumb ? breadcrumb : '',
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)]: '',
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});
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};
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afterEach(() => mockFs.restore());
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it('should throw if any breadcrumbs exist on host', async () => {
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for (const bc of breadcrumbFiles) {
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mockBreadcrumbs(bc);
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await expect(updateLock.abortIfHUPInProgress({ force: false }))
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.to.eventually.be.rejectedWith('Waiting for Host OS update to finish')
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.and.be.an.instanceOf(UpdatesLockedError);
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}
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});
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it('should resolve to false if no breadcrumbs on host', async () => {
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mockBreadcrumbs();
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await expect(
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updateLock.abortIfHUPInProgress({ force: false }),
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).to.eventually.equal(false);
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});
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it('should resolve to true if breadcrumbs are on host but force is passed', async () => {
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for (const bc of breadcrumbFiles) {
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mockBreadcrumbs(bc);
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await expect(
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updateLock.abortIfHUPInProgress({ force: true }),
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).to.eventually.equal(true);
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}
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});
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});
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describe('Lock/dispose functionality', () => {
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const getLockParentDir = (): string =>
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`${constants.rootMountPoint}${updateLock.lockPath(appId, serviceName)}`;
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const expectLocks = async (exists: boolean = true) => {
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expect(await fs.readdir(getLockParentDir())).to.deep.equal(
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exists ? ['resin-updates.lock', 'updates.lock'] : [],
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);
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};
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let unlockSpy: SinonSpy;
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let lockSpy: SinonSpy;
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let execStub: SinonStub;
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let configGetStub: SinonStub;
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beforeEach(() => {
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unlockSpy = spy(lockfile, 'unlock');
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lockSpy = spy(lockfile, 'lock');
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// lockfile.lock calls exec to interface with the lockfile binary,
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// so mock it here as we don't have access to the binary in the test env
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// @ts-expect-error
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execStub = stub(fsUtils, 'exec').callsFake(async (command, opts) => {
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// Sanity check for the command call
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expect(command.trim().startsWith('lockfile')).to.be.true;
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// Remove any `lockfile` command options to leave just the command and the target filepath
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const [, targetPath] = command
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.replace(/-v|-nnn|-r\s+\d+|-l\s+\d+|-s\s+\d+|-!|-ml|-mu/g, '')
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.split(/\s+/);
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// Emulate the lockfile binary exec call
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await fsUtils.touch(targetPath);
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await fs.chown(targetPath, opts!.uid!, 0);
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});
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// config.get is called in updateLock.lock to get `lockOverride` value,
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// so mock it here to definitively avoid any side effects
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configGetStub = stub(config, 'get').resolves(false);
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});
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afterEach(async () => {
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unlockSpy.restore();
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lockSpy.restore();
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execStub.restore();
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configGetStub.restore();
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// Even though mock-fs is restored, this is needed to delete any in-memory storage of locks
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for (const lock of lockfile.getLocksTaken()) {
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await lockfile.unlock(lock);
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}
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mockFs.restore();
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});
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it('should take the lock, run the function, then dispose of locks', async () => {
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// Set up fake filesystem for lockfiles
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mockLockDir({ createLockfile: false });
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await expect(
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updateLock.lock(appId, { force: false }, async () => {
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// At this point the locks should be taken and not removed
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// until this function has been resolved
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await expectLocks(true);
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return Promise.resolve();
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}),
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).to.eventually.be.fulfilled;
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// Both `updates.lock` and `resin-updates.lock` should have been taken
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expect(lockSpy.args).to.have.length(2);
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// Everything that was locked should have been unlocked
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expect(lockSpy.args.map(([lock]) => [lock])).to.deep.equal(
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unlockSpy.args,
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);
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});
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it('should throw UpdatesLockedError if lockfile exists', async () => {
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// Set up fake filesystem for lockfiles
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mockLockDir({ createLockfile: true });
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const lockPath = `${getLockParentDir()}/updates.lock`;
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execStub.throws(new lockfile.LockfileExistsError(lockPath));
|
||||
|
||||
try {
|
||||
await updateLock.lock(appId, { force: false }, async () => {
|
||||
await expectLocks(false);
|
||||
return Promise.resolve();
|
||||
});
|
||||
expect.fail('updateLock.lock should throw an UpdatesLockedError');
|
||||
} catch (err) {
|
||||
expect(err).to.be.instanceOf(UpdatesLockedError);
|
||||
}
|
||||
|
||||
// Should only have attempted to take `updates.lock`
|
||||
expect(lockSpy.args.flat()).to.deep.equal([
|
||||
lockPath,
|
||||
updateLock.LOCKFILE_UID,
|
||||
]);
|
||||
|
||||
// Since the lock-taking failed, there should be no locks to dispose of
|
||||
expect(lockfile.getLocksTaken()).to.have.length(0);
|
||||
|
||||
// Since nothing was locked, nothing should be unlocked
|
||||
expect(unlockSpy.args).to.have.length(0);
|
||||
});
|
||||
|
||||
it('should dispose of taken locks on any other errors', async () => {
|
||||
// Set up fake filesystem for lockfiles
|
||||
mockLockDir({ createLockfile: false });
|
||||
|
||||
try {
|
||||
await updateLock.lock(
|
||||
appId,
|
||||
{ force: false },
|
||||
// At this point 2 lockfiles have been written, so this is testing
|
||||
// that even if the function rejects, lockfiles will be disposed of
|
||||
async () => {
|
||||
await expectLocks();
|
||||
return Promise.reject(new Error('Test error'));
|
||||
},
|
||||
);
|
||||
} catch {
|
||||
/* noop */
|
||||
// This just catches the 'Test error' above
|
||||
}
|
||||
|
||||
// Both `updates.lock` and `resin-updates.lock` should have been taken
|
||||
expect(lockSpy.args).to.have.length(2);
|
||||
|
||||
// Everything that was locked should have been unlocked
|
||||
expect(lockSpy.args.map(([lock]) => [lock])).to.deep.equal(
|
||||
unlockSpy.args,
|
||||
);
|
||||
});
|
||||
|
||||
it('locks all applications before resolving input function', async () => {
|
||||
const appIds = [111, 222, 333];
|
||||
// Set up fake filesystem for lockfiles
|
||||
mockFs({
|
||||
[path.join(
|
||||
constants.rootMountPoint,
|
||||
updateLock.lockPath(111),
|
||||
serviceName,
|
||||
)]: {},
|
||||
[path.join(
|
||||
constants.rootMountPoint,
|
||||
updateLock.lockPath(222),
|
||||
serviceName,
|
||||
)]: {},
|
||||
[path.join(
|
||||
constants.rootMountPoint,
|
||||
updateLock.lockPath(333),
|
||||
serviceName,
|
||||
)]: {},
|
||||
});
|
||||
|
||||
await expect(
|
||||
updateLock.lock(appIds, { force: false }, async () => {
|
||||
// At this point the locks should be taken and not removed
|
||||
// until this function has been resolved
|
||||
// Both `updates.lock` and `resin-updates.lock` should have been taken
|
||||
expect(lockSpy.args).to.have.length(6);
|
||||
// Make sure that no locks have been removed also
|
||||
expect(unlockSpy).to.not.be.called;
|
||||
return Promise.resolve();
|
||||
}),
|
||||
).to.eventually.be.fulfilled;
|
||||
|
||||
// Everything that was locked should have been unlocked after function resolves
|
||||
expect(lockSpy.args.map(([lock]) => [lock])).to.deep.equal(
|
||||
unlockSpy.args,
|
||||
);
|
||||
});
|
||||
|
||||
it('resolves input function without locking when appId is null', async () => {
|
||||
mockLockDir({ createLockfile: true });
|
||||
|
||||
await expect(
|
||||
updateLock.lock(null as any, { force: false }, stub().resolves()),
|
||||
).to.be.fulfilled;
|
||||
|
||||
// Since appId is null, updateLock.lock should just run the function, so
|
||||
// there should be no interfacing with the lockfile module
|
||||
expect(unlockSpy).to.not.have.been.called;
|
||||
expect(lockSpy).to.not.have.been.called;
|
||||
});
|
||||
|
||||
it('unlocks lockfile to resolve function if force option specified', async () => {
|
||||
mockLockDir({ createLockfile: true });
|
||||
|
||||
await expect(updateLock.lock(1234567, { force: true }, stub().resolves()))
|
||||
.to.be.fulfilled;
|
||||
|
||||
expect(unlockSpy).to.have.been.called;
|
||||
expect(lockSpy).to.have.been.called;
|
||||
});
|
||||
|
||||
it('unlocks lockfile to resolve function if lockOverride option specified', async () => {
|
||||
configGetStub.resolves(true);
|
||||
mockLockDir({ createLockfile: true });
|
||||
|
||||
await expect(
|
||||
updateLock.lock(1234567, { force: false }, stub().resolves()),
|
||||
).to.be.fulfilled;
|
||||
|
||||
expect(unlockSpy).to.have.been.called;
|
||||
expect(lockSpy).to.have.been.called;
|
||||
});
|
||||
});
|
||||
});
|
||||
17
test/unit/lib/update-lock.spec.ts
Normal file
17
test/unit/lib/update-lock.spec.ts
Normal file
@ -0,0 +1,17 @@
|
||||
import { expect } from 'chai';
|
||||
import * as path from 'path';
|
||||
|
||||
import * as updateLock from '~/lib/update-lock';
|
||||
|
||||
describe('lib/update-lock: unit tests', () => {
|
||||
describe('lockPath', () => {
|
||||
it('should return path prefix of service lockfiles on host', () => {
|
||||
expect(updateLock.lockPath(123)).to.equal(
|
||||
path.join(updateLock.BASE_LOCK_DIR, '123'),
|
||||
);
|
||||
expect(updateLock.lockPath(123, 'main')).to.equal(
|
||||
path.join(updateLock.BASE_LOCK_DIR, '123', 'main'),
|
||||
);
|
||||
});
|
||||
});
|
||||
});
|
||||
Loading…
Reference in New Issue
Block a user