overleaf/services/document-updater/test/unit/coffee/LockManager/getLockTests.coffee

79 lines
2.3 KiB
CoffeeScript

sinon = require('sinon')
chai = require('chai')
should = chai.should()
modulePath = "../../../../app/js/LockManager.js"
SandboxedModule = require('sandboxed-module')
describe 'LockManager - getting the lock', ->
beforeEach ->
@LockManager = SandboxedModule.require modulePath, requires:
"logger-sharelatex": log:->
"redis-sharelatex":
createClient : () =>
auth:->
"./Metrics": {inc: () ->}
"./Profiler": class Profiler
log: sinon.stub().returns { end: sinon.stub() }
end: sinon.stub()
@callback = sinon.stub()
@doc_id = "doc-id-123"
describe "when the lock is not set", ->
beforeEach (done) ->
@lockValue = "mock-lock-value"
@LockManager.tryLock = sinon.stub().callsArgWith(1, null, true, @lockValue)
@LockManager.getLock @doc_id, (args...) =>
@callback(args...)
done()
it "should try to get the lock", ->
@LockManager.tryLock
.calledWith(@doc_id)
.should.equal true
it "should only need to try once", ->
@LockManager.tryLock.callCount.should.equal 1
it "should return the callback with the lock value", ->
@callback.calledWith(null, @lockValue).should.equal true
describe "when the lock is initially set", ->
beforeEach (done) ->
@lockValue = "mock-lock-value"
startTime = Date.now()
tries = 0
@LockManager.LOCK_TEST_INTERVAL = 5
@LockManager.tryLock = (doc_id, callback = (error, isFree) ->) =>
if (Date.now() - startTime < 20) or (tries < 2)
tries = tries + 1
callback null, false
else
callback null, true, @lockValue
sinon.spy @LockManager, "tryLock"
@LockManager.getLock @doc_id, (args...) =>
@callback(args...)
done()
it "should call tryLock multiple times until free", ->
(@LockManager.tryLock.callCount > 1).should.equal true
it "should return the callback with the lock value", ->
@callback.calledWith(null, @lockValue).should.equal true
describe "when the lock times out", ->
beforeEach (done) ->
time = Date.now()
@LockManager.MAX_LOCK_WAIT_TIME = 5
@LockManager.tryLock = sinon.stub().callsArgWith(1, null, false)
@LockManager.getLock @doc_id, (args...) =>
@callback(args...)
done()
it "should return the callback with an error", ->
e = new Error("Timeout")
e.doc_id = @doc_id
@callback.calledWith(e).should.equal true