439 lines
12 KiB
JavaScript
439 lines
12 KiB
JavaScript
var async = require('async');
|
|
var expect = require('chai').expect;
|
|
|
|
var Change;
|
|
var TestModel;
|
|
|
|
describe('Change', function() {
|
|
beforeEach(function() {
|
|
var memory = loopback.createDataSource({
|
|
connector: loopback.Memory
|
|
});
|
|
TestModel = loopback.PersistedModel.extend('ChangeTestModel',
|
|
{
|
|
id: { id: true, type: 'string', defaultFn: 'guid' }
|
|
},
|
|
{
|
|
trackChanges: true
|
|
});
|
|
this.modelName = TestModel.modelName;
|
|
TestModel.attachTo(memory);
|
|
Change = TestModel.getChangeModel();
|
|
});
|
|
|
|
beforeEach(function(done) {
|
|
var test = this;
|
|
test.data = {
|
|
foo: 'bar'
|
|
};
|
|
TestModel.create(test.data, function(err, model) {
|
|
if (err) return done(err);
|
|
test.model = model;
|
|
test.modelId = model.id;
|
|
test.revisionForModel = Change.revisionForInst(model);
|
|
done();
|
|
});
|
|
});
|
|
|
|
describe('Change.getCheckpointModel()', function() {
|
|
it('Shouldnt create two models if called twice', function() {
|
|
assert.equal(Change.getCheckpointModel(), Change.getCheckpointModel());
|
|
});
|
|
});
|
|
|
|
describe('change.id', function() {
|
|
it('should be a hash of the modelName and modelId', function() {
|
|
var change = new Change({
|
|
rev: 'abc',
|
|
modelName: 'foo',
|
|
modelId: 'bar'
|
|
});
|
|
|
|
var hash = Change.hash([change.modelName, change.modelId].join('-'));
|
|
|
|
assert.equal(change.id, hash);
|
|
});
|
|
});
|
|
|
|
describe('Change.rectifyModelChanges(modelName, modelIds, callback)', function() {
|
|
describe('using an existing untracked model', function() {
|
|
beforeEach(function(done) {
|
|
var test = this;
|
|
Change.rectifyModelChanges(this.modelName, [this.modelId], function(err, trackedChanges) {
|
|
if (err) return done(err);
|
|
done();
|
|
});
|
|
});
|
|
|
|
it('should create an entry', function(done) {
|
|
var test = this;
|
|
Change.find(function(err, trackedChanges) {
|
|
assert.equal(trackedChanges[0].modelId, test.modelId.toString());
|
|
done();
|
|
});
|
|
});
|
|
|
|
it('should only create one change', function(done) {
|
|
Change.count(function(err, count) {
|
|
assert.equal(count, 1);
|
|
done();
|
|
});
|
|
});
|
|
});
|
|
});
|
|
|
|
describe('Change.findOrCreateChange(modelName, modelId, callback)', function() {
|
|
|
|
describe('when a change doesnt exist', function() {
|
|
beforeEach(function(done) {
|
|
var test = this;
|
|
Change.findOrCreateChange(this.modelName, this.modelId, function(err, result) {
|
|
if (err) return done(err);
|
|
test.result = result;
|
|
done();
|
|
});
|
|
});
|
|
|
|
it('should create an entry', function(done) {
|
|
var test = this;
|
|
Change.findById(this.result.id, function(err, change) {
|
|
if (err) return done(err);
|
|
assert.equal(change.id, test.result.id);
|
|
done();
|
|
});
|
|
});
|
|
});
|
|
|
|
describe('when a change does exist', function() {
|
|
beforeEach(function(done) {
|
|
var test = this;
|
|
Change.create({
|
|
modelName: test.modelName,
|
|
modelId: test.modelId
|
|
}, function(err, change) {
|
|
test.existingChange = change;
|
|
done();
|
|
});
|
|
});
|
|
|
|
beforeEach(function(done) {
|
|
var test = this;
|
|
Change.findOrCreateChange(this.modelName, this.modelId, function(err, result) {
|
|
if (err) return done(err);
|
|
test.result = result;
|
|
done();
|
|
});
|
|
});
|
|
|
|
it('should find the entry', function(done) {
|
|
var test = this;
|
|
assert.equal(test.existingChange.id, test.result.id);
|
|
done();
|
|
});
|
|
});
|
|
});
|
|
|
|
describe('change.rectify(callback)', function() {
|
|
var change;
|
|
beforeEach(function(done) {
|
|
Change.findOrCreate(
|
|
{
|
|
modelName: this.modelName,
|
|
modelId: this.modelId
|
|
},
|
|
function(err, ch) {
|
|
change = ch;
|
|
done(err);
|
|
});
|
|
});
|
|
|
|
it('should create a new change with the correct revision', function(done) {
|
|
var test = this;
|
|
change.rectify(function(err, ch) {
|
|
assert.equal(ch.rev, test.revisionForModel);
|
|
done();
|
|
});
|
|
});
|
|
|
|
// This test is a low-level equivalent of the test in replication.test.js
|
|
// called "replicates multiple updates within the same CP"
|
|
it('should merge updates within the same checkpoint', function(done) {
|
|
var test = this;
|
|
var originalRev = this.revisionForModel;
|
|
var cp;
|
|
|
|
async.series([
|
|
rectify,
|
|
checkpoint,
|
|
update,
|
|
rectify,
|
|
update,
|
|
rectify,
|
|
function(next) {
|
|
expect(change.checkpoint, 'checkpoint').to.equal(cp);
|
|
expect(change.type(), 'type').to.equal('update');
|
|
expect(change.prev, 'prev').to.equal(originalRev);
|
|
expect(change.rev, 'rev').to.equal(test.revisionForModel);
|
|
next();
|
|
}
|
|
], done);
|
|
|
|
function rectify(next) {
|
|
change.rectify(next);
|
|
}
|
|
|
|
function checkpoint(next) {
|
|
TestModel.checkpoint(function(err, inst) {
|
|
if (err) return next(err);
|
|
cp = inst.seq;
|
|
next();
|
|
});
|
|
}
|
|
|
|
function update(next) {
|
|
var model = test.model;
|
|
|
|
model.name += 'updated';
|
|
model.save(function(err) {
|
|
test.revisionForModel = Change.revisionForInst(model);
|
|
next(err);
|
|
});
|
|
}
|
|
});
|
|
});
|
|
|
|
describe('change.currentRevision(callback)', function() {
|
|
it('should get the correct revision', function(done) {
|
|
var test = this;
|
|
var change = new Change({
|
|
modelName: this.modelName,
|
|
modelId: this.modelId
|
|
});
|
|
|
|
change.currentRevision(function(err, rev) {
|
|
assert.equal(rev, test.revisionForModel);
|
|
done();
|
|
});
|
|
});
|
|
});
|
|
|
|
describe('Change.hash(str)', function() {
|
|
// todo(ritch) test other hashing algorithms
|
|
it('should hash the given string', function() {
|
|
var str = 'foo';
|
|
var hash = Change.hash(str);
|
|
assert(hash !== str);
|
|
assert(typeof hash === 'string');
|
|
});
|
|
});
|
|
|
|
describe('Change.revisionForInst(inst)', function() {
|
|
it('should return the same revision for the same data', function() {
|
|
var a = {
|
|
b: {
|
|
b: ['c', 'd'],
|
|
c: ['d', 'e']
|
|
}
|
|
};
|
|
var b = {
|
|
b: {
|
|
c: ['d', 'e'],
|
|
b: ['c', 'd']
|
|
}
|
|
};
|
|
|
|
var aRev = Change.revisionForInst(a);
|
|
var bRev = Change.revisionForInst(b);
|
|
assert.equal(aRev, bRev);
|
|
});
|
|
});
|
|
|
|
describe('change.type()', function() {
|
|
it('CREATE', function() {
|
|
var change = new Change({
|
|
rev: this.revisionForModel
|
|
});
|
|
assert.equal(Change.CREATE, change.type());
|
|
});
|
|
it('UPDATE', function() {
|
|
var change = new Change({
|
|
rev: this.revisionForModel,
|
|
prev: this.revisionForModel
|
|
});
|
|
assert.equal(Change.UPDATE, change.type());
|
|
});
|
|
it('DELETE', function() {
|
|
var change = new Change({
|
|
prev: this.revisionForModel
|
|
});
|
|
assert.equal(Change.DELETE, change.type());
|
|
});
|
|
it('UNKNOWN', function() {
|
|
var change = new Change();
|
|
assert.equal(Change.UNKNOWN, change.type());
|
|
});
|
|
});
|
|
|
|
describe('change.getModelCtor()', function() {
|
|
it('should get the correct model class', function() {
|
|
var change = new Change({
|
|
modelName: this.modelName
|
|
});
|
|
|
|
assert.equal(change.getModelCtor(), TestModel);
|
|
});
|
|
});
|
|
|
|
describe('change.equals(otherChange)', function() {
|
|
it('should return true when the change is equal', function() {
|
|
var change = new Change({
|
|
rev: this.revisionForModel
|
|
});
|
|
|
|
var otherChange = new Change({
|
|
rev: this.revisionForModel
|
|
});
|
|
|
|
assert.equal(change.equals(otherChange), true);
|
|
});
|
|
|
|
it('should return true when both changes are deletes', function() {
|
|
var REV = 'foo';
|
|
var change = new Change({
|
|
rev: null,
|
|
prev: REV,
|
|
});
|
|
|
|
var otherChange = new Change({
|
|
rev: undefined,
|
|
prev: REV
|
|
});
|
|
|
|
assert.equal(change.type(), Change.DELETE);
|
|
assert.equal(otherChange.type(), Change.DELETE);
|
|
|
|
assert.equal(change.equals(otherChange), true);
|
|
});
|
|
});
|
|
|
|
describe('change.isBasedOn(otherChange)', function() {
|
|
it('should return true when the change is based on the other', function() {
|
|
var change = new Change({
|
|
prev: this.revisionForModel
|
|
});
|
|
|
|
var otherChange = new Change({
|
|
rev: this.revisionForModel
|
|
});
|
|
|
|
assert.equal(change.isBasedOn(otherChange), true);
|
|
});
|
|
});
|
|
|
|
describe('Change.diff(modelName, since, remoteChanges, callback)', function() {
|
|
beforeEach(function(done) {
|
|
Change.create([
|
|
{rev: 'foo', modelName: this.modelName, modelId: 9, checkpoint: 1},
|
|
{rev: 'bar', modelName: this.modelName, modelId: 10, checkpoint: 1},
|
|
{rev: 'bat', modelName: this.modelName, modelId: 11, checkpoint: 1},
|
|
], done);
|
|
});
|
|
|
|
it('should return delta and conflict lists', function(done) {
|
|
var remoteChanges = [
|
|
// an update => should result in a delta
|
|
{rev: 'foo2', prev: 'foo', modelName: this.modelName, modelId: 9, checkpoint: 1},
|
|
// no change => should not result in a delta / conflict
|
|
{rev: 'bar', prev: 'bar', modelName: this.modelName, modelId: 10, checkpoint: 1},
|
|
// a conflict => should result in a conflict
|
|
{rev: 'bat2', prev: 'bat0', modelName: this.modelName, modelId: 11, checkpoint: 1},
|
|
];
|
|
|
|
Change.diff(this.modelName, 0, remoteChanges, function(err, diff) {
|
|
if (err) return done(err);
|
|
assert.equal(diff.deltas.length, 1);
|
|
assert.equal(diff.conflicts.length, 1);
|
|
done();
|
|
});
|
|
});
|
|
|
|
it('should set "prev" to local revision in non-conflicting delta', function(done) {
|
|
var updateRecord = {
|
|
rev: 'foo-new',
|
|
prev: 'foo',
|
|
modelName: this.modelName,
|
|
modelId: '9',
|
|
checkpoint: 2
|
|
};
|
|
Change.diff(this.modelName, 0, [updateRecord], function(err, diff) {
|
|
if (err) return done(err);
|
|
expect(diff.conflicts, 'conflicts').to.have.length(0);
|
|
expect(diff.deltas, 'deltas').to.have.length(1);
|
|
var actual = diff.deltas[0].toObject();
|
|
delete actual.id;
|
|
expect(actual).to.eql({
|
|
checkpoint: 2,
|
|
modelId: '9',
|
|
modelName: updateRecord.modelName,
|
|
prev: 'foo', // this is the current local revision
|
|
rev: 'foo-new',
|
|
});
|
|
done();
|
|
});
|
|
});
|
|
|
|
it('should set "prev" to local revision in remote-only delta', function(done) {
|
|
var updateRecord = {
|
|
rev: 'foo-new',
|
|
prev: 'foo-prev',
|
|
modelName: this.modelName,
|
|
modelId: '9',
|
|
checkpoint: 2
|
|
};
|
|
// IMPORTANT: the diff call excludes the local change
|
|
// with rev=foo CP=1
|
|
Change.diff(this.modelName, 2, [updateRecord], function(err, diff) {
|
|
if (err) return done(err);
|
|
expect(diff.conflicts, 'conflicts').to.have.length(0);
|
|
expect(diff.deltas, 'deltas').to.have.length(1);
|
|
var actual = diff.deltas[0].toObject();
|
|
delete actual.id;
|
|
expect(actual).to.eql({
|
|
checkpoint: 2,
|
|
modelId: '9',
|
|
modelName: updateRecord.modelName,
|
|
prev: 'foo', // this is the current local revision
|
|
rev: 'foo-new',
|
|
});
|
|
done();
|
|
});
|
|
});
|
|
|
|
it('should set "prev" to null for a new instance', function(done) {
|
|
var updateRecord = {
|
|
rev: 'new-rev',
|
|
prev: 'new-prev',
|
|
modelName: this.modelName,
|
|
modelId: 'new-id',
|
|
checkpoint: 2
|
|
};
|
|
|
|
Change.diff(this.modelName, 0, [updateRecord], function(err, diff) {
|
|
if (err) return done(err);
|
|
expect(diff.conflicts).to.have.length(0);
|
|
expect(diff.deltas).to.have.length(1);
|
|
var actual = diff.deltas[0].toObject();
|
|
delete actual.id;
|
|
expect(actual).to.eql({
|
|
checkpoint: 2,
|
|
modelId: 'new-id',
|
|
modelName: updateRecord.modelName,
|
|
prev: null, // this is the current local revision
|
|
rev: 'new-rev',
|
|
});
|
|
done();
|
|
});
|
|
});
|
|
});
|
|
});
|