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240 lines
9 KiB
CoffeeScript
240 lines
9 KiB
CoffeeScript
sinon = require('sinon')
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chai = require('chai')
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should = chai.should()
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expect = chai.expect
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modulePath = "../../../../app/js/DiffManager.js"
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SandboxedModule = require('sandboxed-module')
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describe "DiffManager", ->
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beforeEach ->
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@DiffManager = SandboxedModule.require modulePath, requires:
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"logger-sharelatex": @logger = { log: sinon.stub(), error: sinon.stub(), warn: sinon.stub() }
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"./UpdatesManager": @UpdatesManager = {}
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"./DocumentUpdaterManager": @DocumentUpdaterManager = {}
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"./DiffGenerator": @DiffGenerator = {}
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@callback = sinon.stub()
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@from = new Date()
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@to = new Date(Date.now() + 10000)
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@project_id = "mock-project-id"
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@doc_id = "mock-doc-id"
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describe "getLatestDocAndUpdates", ->
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beforeEach ->
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@content = "hello world"
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@version = 42
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@updates = [ "mock-update-1", "mock-update-2" ]
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@DocumentUpdaterManager.getDocument = sinon.stub().callsArgWith(2, null, @content, @version)
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@UpdatesManager.getDocUpdatesWithUserInfo = sinon.stub().callsArgWith(3, null, @updates)
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describe "with a fromVersion", ->
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beforeEach ->
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@DiffManager.getLatestDocAndUpdates @project_id, @doc_id, @from, @callback
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it "should get the latest version of the doc", ->
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@DocumentUpdaterManager.getDocument
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.calledWith(@project_id, @doc_id)
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.should.equal true
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it "should get the latest updates", ->
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@UpdatesManager.getDocUpdatesWithUserInfo
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.calledWith(@project_id, @doc_id, from: @from)
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.should.equal true
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it "should call the callback with the content, version and updates", ->
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@callback.calledWith(null, @content, @version, @updates).should.equal true
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describe "with no fromVersion", ->
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beforeEach ->
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@DiffManager.getLatestDocAndUpdates @project_id, @doc_id, null, @callback
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it "should get the latest version of the doc", ->
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@DocumentUpdaterManager.getDocument
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.calledWith(@project_id, @doc_id)
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.should.equal true
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it "should not get the latest updates", ->
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@UpdatesManager.getDocUpdatesWithUserInfo
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.called.should.equal false
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it "should call the callback with the content, version and blank updates", ->
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@callback.calledWith(null, @content, @version, []).should.equal true
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describe "getDiff", ->
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beforeEach ->
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@content = "hello world"
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# Op versions are the version they were applied to, so doc is always one version
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# ahead.s
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@version = 43
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@updates = [
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{ op: "mock-4", v: 42, meta: { start_ts: new Date(@to.getTime() + 20)} }
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{ op: "mock-3", v: 41, meta: { start_ts: new Date(@to.getTime() + 10)} }
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{ op: "mock-2", v: 40, meta: { start_ts: new Date(@to.getTime() - 10)} }
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{ op: "mock-1", v: 39, meta: { start_ts: new Date(@to.getTime() - 20)} }
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]
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@fromVersion = 39
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@toVersion = 40
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@diffed_updates = @updates.slice(2)
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@rewound_content = "rewound-content"
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@diff = [ u: "mock-diff" ]
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describe "with matching versions", ->
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beforeEach ->
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@DiffManager.getDocumentBeforeVersion = sinon.stub().callsArgWith(3, null, @rewound_content, @updates)
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@DiffGenerator.buildDiff = sinon.stub().returns(@diff)
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@DiffManager.getDiff @project_id, @doc_id, @fromVersion, @toVersion, @callback
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it "should get the latest doc and version with all recent updates", ->
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@DiffManager.getDocumentBeforeVersion
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.calledWith(@project_id, @doc_id, @fromVersion)
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.should.equal true
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it "should generate the diff", ->
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@DiffGenerator.buildDiff
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.calledWith(@rewound_content, @diffed_updates.slice().reverse())
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.should.equal true
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it "should call the callback with the diff", ->
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@callback.calledWith(null, @diff).should.equal true
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describe "when the updates are inconsistent", ->
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beforeEach ->
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@DiffManager.getLatestDocAndUpdates = sinon.stub().callsArgWith(3, null, @content, @version, @updates)
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@DiffGenerator.buildDiff = sinon.stub().throws(@error = new Error("inconsistent!"))
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@DiffManager.getDiff @project_id, @doc_id, @fromVersion, @toVersion, @callback
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it "should call the callback with an error", ->
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@callback
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.calledWith(@error)
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.should.equal true
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describe "getDocumentBeforeVersion", ->
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beforeEach ->
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@DiffManager._tryGetDocumentBeforeVersion = sinon.stub()
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@document = "mock-documents"
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@rewound_updates = "mock-rewound-updates"
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describe "succesfully", ->
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beforeEach ->
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@DiffManager._tryGetDocumentBeforeVersion.yields(null, @document, @rewound_updates)
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@DiffManager.getDocumentBeforeVersion @project_id, @doc_id, @version, @callback
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it "should call _tryGetDocumentBeforeVersion", ->
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@DiffManager._tryGetDocumentBeforeVersion
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.calledWith(@project_id, @doc_id, @version)
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.should.equal true
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it "should call the callback with the response", ->
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@callback.calledWith(null, @document, @rewound_updates).should.equal true
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describe "with a retry needed", ->
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beforeEach ->
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retried = false
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@DiffManager._tryGetDocumentBeforeVersion = (project_id, doc_id, version, callback) =>
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if !retried
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retried = true
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error = new Error()
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error.retry = true
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callback error
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else
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callback(null, @document, @rewound_updates)
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sinon.spy @DiffManager, "_tryGetDocumentBeforeVersion"
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@DiffManager.getDocumentBeforeVersion @project_id, @doc_id, @version, @callback
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it "should call _tryGetDocumentBeforeVersion twice", ->
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@DiffManager._tryGetDocumentBeforeVersion
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.calledTwice
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.should.equal true
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it "should call the callback with the response", ->
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@callback.calledWith(null, @document, @rewound_updates).should.equal true
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describe "with a non-retriable error", ->
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beforeEach ->
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@error = new Error("oops")
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@DiffManager._tryGetDocumentBeforeVersion.yields(@error)
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@DiffManager.getDocumentBeforeVersion @project_id, @doc_id, @version, @callback
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it "should call _tryGetDocumentBeforeVersion once", ->
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@DiffManager._tryGetDocumentBeforeVersion
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.calledOnce
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.should.equal true
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it "should call the callback with the error", ->
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@callback.calledWith(@error).should.equal true
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describe "when retry limit is matched", ->
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beforeEach ->
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@error = new Error("oops")
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@error.retry = true
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@DiffManager._tryGetDocumentBeforeVersion.yields(@error)
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@DiffManager.getDocumentBeforeVersion @project_id, @doc_id, @version, @callback
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it "should call _tryGetDocumentBeforeVersion three times (max retries)", ->
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@DiffManager._tryGetDocumentBeforeVersion
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.calledThrice
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.should.equal true
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it "should call the callback with the error", ->
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@callback.calledWith(@error).should.equal true
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describe "_tryGetDocumentBeforeVersion", ->
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beforeEach ->
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@content = "hello world"
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# Op versions are the version they were applied to, so doc is always one version
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# ahead.s
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@version = 43
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@updates = [
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{ op: "mock-4", v: 42, meta: { start_ts: new Date(@to.getTime() + 20)} }
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{ op: "mock-3", v: 41, meta: { start_ts: new Date(@to.getTime() + 10)} }
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{ op: "mock-2", v: 40, meta: { start_ts: new Date(@to.getTime() - 10)} }
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{ op: "mock-1", v: 39, meta: { start_ts: new Date(@to.getTime() - 20)} }
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]
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@fromVersion = 39
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@rewound_content = "rewound-content"
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@diff = [ u: "mock-diff" ]
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describe "with matching versions", ->
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beforeEach ->
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@DiffManager.getLatestDocAndUpdates = sinon.stub().callsArgWith(3, null, @content, @version, @updates)
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@DiffGenerator.rewindUpdates = sinon.spy (content, updates) =>
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# the rewindUpdates method reverses the 'updates' array
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updates.reverse()
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return @rewound_content
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@rewindUpdatesWithArgs = @DiffGenerator.rewindUpdates.withArgs(@content, @updates.slice().reverse())
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@DiffManager._tryGetDocumentBeforeVersion @project_id, @doc_id, @fromVersion, @callback
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it "should get the latest doc and version with all recent updates", ->
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@DiffManager.getLatestDocAndUpdates
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.calledWith(@project_id, @doc_id, @fromVersion)
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.should.equal true
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it "should rewind the diff", ->
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sinon.assert.calledOnce(@rewindUpdatesWithArgs)
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it "should call the callback with the rewound document and updates", ->
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@callback.calledWith(null, @rewound_content, @updates).should.equal true
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describe "with mismatching versions", ->
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beforeEach ->
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@version = 50
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@updates = [ { op: "mock-1", v: 40 }, { op: "mock-1", v: 39 } ]
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@DiffManager.getLatestDocAndUpdates = sinon.stub().callsArgWith(3, null, @content, @version, @updates)
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@DiffManager._tryGetDocumentBeforeVersion @project_id, @doc_id, @fromVersion, @callback
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it "should call the callback with an error with retry = true set", ->
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@callback.calledOnce.should.equal true
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error = @callback.args[0][0]
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expect(error.retry).to.equal true
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describe "when the updates are inconsistent", ->
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beforeEach ->
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@DiffManager.getLatestDocAndUpdates = sinon.stub().callsArgWith(3, null, @content, @version, @updates)
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@DiffGenerator.rewindUpdates = sinon.stub().throws(@error = new Error("inconsistent!"))
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@DiffManager.getDocumentBeforeVersion @project_id, @doc_id, @fromVersion, @callback
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it "should call the callback with an error", ->
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@callback
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.calledWith(@error)
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.should.equal true
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