loopback-datasource-juggler/test/persistence-hooks.suite.js

1277 lines
41 KiB
JavaScript

var ValidationError = require('../').ValidationError;
var traverse = require('traverse');
module.exports = function(dataSource, should) {
describe('Persistence hooks', function() {
var observedContexts, expectedError, observersCalled;
var TestModel, existingInstance;
var migrated = false, lastId;
beforeEach(function setupDatabase(done) {
observedContexts = "hook not called";
expectedError = new Error('test error');
observersCalled = [];
TestModel = dataSource.createModel('TestModel', {
id: { type: String, id: true, default: uid },
name: { type: String, required: true },
extra: { type: String, required: false }
});
lastId = 0;
if (migrated) {
TestModel.deleteAll(done);
} else {
dataSource.automigrate(TestModel.modelName, function(err) {
migrated = true;
done(err);
});
}
});
beforeEach(function createTestData(done) {
TestModel.create({ name: 'first' }, function(err, instance) {
if (err) return done(err);
existingInstance = instance;
TestModel.create({ name: 'second' }, function(err) {
if (err) return done(err);
done();
});
});
});
describe('PersistedModel.find', function() {
it('triggers `access` hook', function(done) {
TestModel.observe('access', pushContextAndNext());
TestModel.find({ where: { id: '1' } }, function(err, list) {
if (err) return done(err);
observedContexts.should.eql(aTestModelCtx({
query: { where: { id: '1' } }
}));
done();
});
});
it('aborts when `access` hook fails', function(done) {
TestModel.observe('access', nextWithError(expectedError));
TestModel.find(function(err, list) {
[err].should.eql([expectedError]);
done();
});
});
it('applies updates from `access` hook', function(done) {
TestModel.observe('access', function(ctx, next) {
ctx.query = { where: { id: existingInstance.id } };
next();
});
TestModel.find(function(err, list) {
if (err) return done(err);
list.map(get('name')).should.eql([existingInstance.name]);
done();
});
});
it('triggers `access` hook for geo queries', function(done) {
TestModel.observe('access', pushContextAndNext());
TestModel.find({ where: { geo: { near: '10,20' }}}, function(err, list) {
if (err) return done(err);
observedContexts.should.eql(aTestModelCtx({
query: { where: { geo: { near: '10,20' } } }
}));
done();
});
});
it('applies updates from `access` hook for geo queries', function(done) {
TestModel.observe('access', function(ctx, next) {
ctx.query = { where: { id: existingInstance.id } };
next();
});
TestModel.find({ where: { geo: { near: '10,20' } } }, function(err, list) {
if (err) return done(err);
list.map(get('name')).should.eql([existingInstance.name]);
done();
});
});
});
describe('PersistedModel.create', function() {
it('triggers `before save` hook', function(done) {
TestModel.observe('before save', pushContextAndNext());
TestModel.create({ name: 'created' }, function(err, instance) {
if (err) return done(err);
observedContexts.should.eql(aTestModelCtx({ instance: {
id: instance.id,
name: 'created',
extra: undefined
}}));
done();
});
});
it('aborts when `before save` hook fails', function(done) {
TestModel.observe('before save', nextWithError(expectedError));
TestModel.create({ name: 'created' }, function(err, instance) {
[err].should.eql([expectedError]);
done();
});
});
it('applies updates from `before save` hook', function(done) {
TestModel.observe('before save', function(ctx, next) {
ctx.instance.should.be.instanceOf(TestModel);
ctx.instance.extra = 'hook data';
next();
});
TestModel.create({ id: uid(), name: 'a-name' }, function(err, instance) {
if (err) return done(err);
instance.should.have.property('extra', 'hook data');
done();
});
});
it('sends `before save` for each model in an array', function(done) {
TestModel.observe('before save', pushContextAndNext());
TestModel.create(
[{ name: 'one' }, { name: 'two' }],
function(err, list) {
if (err) return done(err);
observedContexts.should.eql([
aTestModelCtx({
instance: { id: list[0].id, name: 'one', extra: undefined }
}),
aTestModelCtx({
instance: { id: list[1].id, name: 'two', extra: undefined }
}),
]);
done();
});
});
it('validates model after `before save` hook', function(done) {
TestModel.observe('before save', invalidateTestModel());
TestModel.create({ name: 'created' }, function(err) {
(err || {}).should.be.instanceOf(ValidationError);
(err.details.codes || {}).should.eql({ name: ['presence'] });
done();
});
});
it('triggers `after save` hook', function(done) {
TestModel.observe('after save', pushContextAndNext());
TestModel.create({ name: 'created' }, function(err, instance) {
if (err) return done(err);
observedContexts.should.eql(aTestModelCtx({ instance: {
id: instance.id,
name: 'created',
extra: undefined
}}));
done();
});
});
it('aborts when `after save` hook fails', function(done) {
TestModel.observe('after save', nextWithError(expectedError));
TestModel.create({ name: 'created' }, function(err, instance) {
[err].should.eql([expectedError]);
done();
});
});
it('applies updates from `after save` hook', function(done) {
TestModel.observe('after save', function(ctx, next) {
ctx.instance.should.be.instanceOf(TestModel);
ctx.instance.extra = 'hook data';
next();
});
TestModel.create({ name: 'a-name' }, function(err, instance) {
if (err) return done(err);
instance.should.have.property('extra', 'hook data');
done();
});
});
it('sends `after save` for each model in an array', function(done) {
TestModel.observe('after save', pushContextAndNext());
TestModel.create(
[{ name: 'one' }, { name: 'two' }],
function(err, list) {
if (err) return done(err);
observedContexts.should.eql([
aTestModelCtx({
instance: { id: list[0].id, name: 'one', extra: undefined }
}),
aTestModelCtx({
instance: { id: list[1].id, name: 'two', extra: undefined }
}),
]);
done();
});
});
it('emits `after save` when some models were not saved', function(done) {
TestModel.observe('before save', function(ctx, next) {
if (ctx.instance.name === 'fail')
next(expectedError);
else
next();
});
TestModel.observe('after save', pushContextAndNext());
TestModel.create(
[{ name: 'ok' }, { name: 'fail' }],
function(err, list) {
(err || []).should.have.length(2);
err[1].should.eql(expectedError);
// NOTE(bajtos) The current implementation of `Model.create(array)`
// passes all models in the second callback argument, including
// the models that were not created due to an error.
list.map(get('name')).should.eql(['ok', 'fail']);
observedContexts.should.eql(aTestModelCtx({
instance: { id: list[0].id, name: 'ok', extra: undefined }
}));
done();
});
});
});
describe('PersistedModel.findOrCreate', function() {
it('triggers `access` hook', function(done) {
TestModel.observe('access', pushContextAndNext());
TestModel.findOrCreate(
{ where: { name: 'new-record' } },
{ name: 'new-record' },
function(err, record, created) {
if (err) return done(err);
observedContexts.should.eql(aTestModelCtx({ query: {
where: { name: 'new-record' },
limit: 1,
offset: 0,
skip: 0
}}));
done();
});
});
if (dataSource.connector.findOrCreate) {
it('triggers `before save` hook when found', function(done) {
TestModel.observe('before save', pushContextAndNext());
TestModel.findOrCreate(
{ where: { name: existingInstance.name } },
{ name: existingInstance.name },
function(err, record, created) {
if (err) return done(err);
record.id.should.eql(existingInstance.id);
observedContexts.should.eql(aTestModelCtx({ instance: {
id: getLastGeneratedUid(),
name: existingInstance.name,
extra: undefined
}}));
done();
});
});
}
it('triggers `before save` hook when not found', function(done) {
TestModel.observe('before save', pushContextAndNext());
TestModel.findOrCreate(
{ where: { name: 'new-record' } },
{ name: 'new-record' },
function(err, record, created) {
if (err) return done(err);
observedContexts.should.eql(aTestModelCtx({ instance: {
id: record.id,
name: 'new-record',
extra: undefined
}}));
done();
});
});
it('validates model after `before save` hook', function(done) {
TestModel.observe('before save', invalidateTestModel());
TestModel.findOrCreate(
{ where: { name: 'new-record' } },
{ name: 'new-record' },
function(err) {
(err || {}).should.be.instanceOf(ValidationError);
(err.details.codes || {}).should.eql({ name: ['presence'] });
done();
});
});
it('triggers hooks in the correct order when not found', function(done) {
var triggered = [];
TestModel._notify = TestModel.notifyObserversOf;
TestModel.notifyObserversOf = function(operation, context, callback) {
triggered.push(operation);
this._notify.apply(this, arguments);
};
TestModel.findOrCreate(
{ where: { name: 'new-record' } },
{ name: 'new-record' },
function(err, record, created) {
if (err) return done(err);
triggered.should.eql([
'access',
'before save',
'after save'
]);
done();
});
});
it('aborts when `access` hook fails', function(done) {
TestModel.observe('access', nextWithError(expectedError));
TestModel.findOrCreate(
{ where: { id: 'does-not-exist' } },
{ name: 'does-not-exist' },
function(err, instance) {
[err].should.eql([expectedError]);
done();
});
});
it('aborts when `before save` hook fails', function(done) {
TestModel.observe('before save', nextWithError(expectedError));
TestModel.findOrCreate(
{ where: { id: 'does-not-exist' } },
{ name: 'does-not-exist' },
function(err, instance) {
[err].should.eql([expectedError]);
done();
});
});
it('triggers `after save` hook when not found', function(done) {
TestModel.observe('after save', pushContextAndNext());
TestModel.findOrCreate(
{ where: { name: 'new name' } },
{ name: 'new name' },
function(err, instance) {
if (err) return done(err);
observedContexts.should.eql(aTestModelCtx({ instance: {
id: instance.id,
name: 'new name',
extra: undefined
}}));
done();
});
});
it('does not trigger `after save` hook when found', function(done) {
TestModel.observe('after save', pushContextAndNext());
TestModel.findOrCreate(
{ where: { id: existingInstance.id } },
{ name: existingInstance.name },
function(err, instance) {
if (err) return done(err);
observedContexts.should.eql("hook not called");
done();
});
});
});
describe('PersistedModel.count', function(done) {
it('triggers `access` hook', function(done) {
TestModel.observe('access', pushContextAndNext());
TestModel.count({ id: existingInstance.id }, function(err, count) {
if (err) return done(err);
observedContexts.should.eql(aTestModelCtx({ query: {
where: { id: existingInstance.id }
}}));
done();
});
});
it('applies updates from `access` hook', function(done) {
TestModel.observe('access', function(ctx, next) {
ctx.query.where = { id: existingInstance.id };
next();
});
TestModel.count(function(err, count) {
if (err) return done(err);
count.should.equal(1);
done();
});
});
});
describe('PersistedModel.prototype.save', function() {
it('triggers `before save` hook', function(done) {
TestModel.observe('before save', pushContextAndNext());
existingInstance.name = 'changed';
existingInstance.save(function(err, instance) {
if (err) return done(err);
observedContexts.should.eql(aTestModelCtx({ instance: {
id: existingInstance.id,
name: 'changed',
extra: undefined
}}));
done();
});
});
it('aborts when `before save` hook fails', function(done) {
TestModel.observe('before save', nextWithError(expectedError));
existingInstance.save(function(err, instance) {
[err].should.eql([expectedError]);
done();
});
});
it('applies updates from `before save` hook', function(done) {
TestModel.observe('before save', function(ctx, next) {
ctx.instance.should.be.instanceOf(TestModel);
ctx.instance.extra = 'hook data';
next();
});
existingInstance.save(function(err, instance) {
if (err) return done(err);
instance.should.have.property('extra', 'hook data');
done();
});
});
it('validates model after `before save` hook', function(done) {
TestModel.observe('before save', invalidateTestModel());
existingInstance.save(function(err) {
(err || {}).should.be.instanceOf(ValidationError);
(err.details.codes || {}).should.eql({ name: ['presence'] });
done();
});
});
it('triggers `after save` hook', function(done) {
TestModel.observe('after save', pushContextAndNext());
existingInstance.name = 'changed';
existingInstance.save(function(err, instance) {
if (err) return done(err);
observedContexts.should.eql(aTestModelCtx({ instance: {
id: existingInstance.id,
name: 'changed',
extra: undefined
}}));
done();
});
});
it('aborts when `after save` hook fails', function(done) {
TestModel.observe('after save', nextWithError(expectedError));
existingInstance.save(function(err, instance) {
[err].should.eql([expectedError]);
done();
});
});
it('applies updates from `after save` hook', function(done) {
TestModel.observe('after save', function(ctx, next) {
ctx.instance.should.be.instanceOf(TestModel);
ctx.instance.extra = 'hook data';
next();
});
existingInstance.save(function(err, instance) {
if (err) return done(err);
instance.should.have.property('extra', 'hook data');
done();
});
});
});
describe('PersistedModel.prototype.updateAttributes', function() {
it('triggers `before save` hook', function(done) {
TestModel.observe('before save', pushContextAndNext());
existingInstance.name = 'changed';
existingInstance.updateAttributes({ name: 'changed' }, function(err) {
if (err) return done(err);
observedContexts.should.eql(aTestModelCtx({
where: { id: existingInstance.id },
data: { name: 'changed' }
}));
done();
});
});
it('aborts when `before save` hook fails', function(done) {
TestModel.observe('before save', nextWithError(expectedError));
existingInstance.updateAttributes({ name: 'updated' }, function(err) {
[err].should.eql([expectedError]);
done();
});
});
it('applies updates from `before save` hook', function(done) {
TestModel.observe('before save', function(ctx, next) {
ctx.data.extra = 'extra data';
ctx.data.name = 'hooked name';
next();
});
existingInstance.updateAttributes({ name: 'updated' }, function(err) {
if (err) return done(err);
// We must query the database here because `updateAttributes`
// returns effectively `this`, not the data from the datasource
TestModel.findById(existingInstance.id, function(err, instance) {
if (err) return done(err);
instance.toObject(true).should.eql({
id: existingInstance.id,
name: 'hooked name',
extra: 'extra data'
});
done();
});
});
});
it('validates model after `before save` hook', function(done) {
TestModel.observe('before save', invalidateTestModel());
existingInstance.updateAttributes({ name: 'updated' }, function(err) {
(err || {}).should.be.instanceOf(ValidationError);
(err.details.codes || {}).should.eql({ name: ['presence'] });
done();
});
});
it('triggers `after save` hook', function(done) {
TestModel.observe('after save', pushContextAndNext());
existingInstance.name = 'changed';
existingInstance.updateAttributes({ name: 'changed' }, function(err) {
if (err) return done(err);
observedContexts.should.eql(aTestModelCtx({ instance: {
id: existingInstance.id,
name: 'changed',
extra: undefined
}}));
done();
});
});
it('aborts when `after save` hook fails', function(done) {
TestModel.observe('after save', nextWithError(expectedError));
existingInstance.updateAttributes({ name: 'updated' }, function(err) {
[err].should.eql([expectedError]);
done();
});
});
it('applies updates from `after save` hook', function(done) {
TestModel.observe('after save', function(ctx, next) {
ctx.instance.should.be.instanceOf(TestModel);
ctx.instance.extra = 'hook data';
next();
});
existingInstance.updateAttributes({ name: 'updated' }, function(err, instance) {
if (err) return done(err);
instance.should.have.property('extra', 'hook data');
done();
});
});
});
describe('PersistedModel.updateOrCreate', function() {
it('triggers `access` hook on create', function(done) {
TestModel.observe('access', pushContextAndNext());
TestModel.updateOrCreate(
{ id: 'not-found', name: 'not found' },
function(err, instance) {
if (err) return done(err);
observedContexts.should.eql(aTestModelCtx({ query: {
where: { id: 'not-found' }
}}));
done();
});
});
it('triggers `access` hook on update', function(done) {
TestModel.observe('access', pushContextAndNext());
TestModel.updateOrCreate(
{ id: existingInstance.id, name: 'new name' },
function(err, instance) {
if (err) return done(err);
observedContexts.should.eql(aTestModelCtx({ query: {
where: { id: existingInstance.id }
}}));
done();
});
});
it('does not trigger `access` on missing id', function(done) {
TestModel.observe('access', pushContextAndNext());
TestModel.updateOrCreate(
{ name: 'new name' },
function(err, instance) {
if (err) return done(err);
observedContexts.should.equal('hook not called');
done();
});
});
it('applies updates from `access` hook when found', function(done) {
TestModel.observe('access', function(ctx, next) {
ctx.query = { where: { id: { neq: existingInstance.id } } };
next();
});
TestModel.updateOrCreate(
{ id: existingInstance.id, name: 'new name' },
function(err, instance) {
if (err) return done(err);
findTestModels({ fields: ['id', 'name' ] }, function(err, list) {
if (err) return done(err);
(list||[]).map(toObject).should.eql([
{ id: existingInstance.id, name: existingInstance.name, extra: undefined },
{ id: instance.id, name: 'new name', extra: undefined }
]);
done();
});
});
});
it('applies updates from `access` hook when not found', function(done) {
TestModel.observe('access', function(ctx, next) {
ctx.query = { where: { id: 'not-found' } };
next();
});
TestModel.updateOrCreate(
{ id: existingInstance.id, name: 'new name' },
function(err, instance) {
if (err) return done(err);
findTestModels({ fields: ['id', 'name' ] }, function(err, list) {
if (err) return done(err);
(list||[]).map(toObject).should.eql([
{ id: existingInstance.id, name: existingInstance.name, extra: undefined },
{ id: list[1].id, name: 'second', extra: undefined },
{ id: instance.id, name: 'new name', extra: undefined }
]);
done();
});
});
});
it('triggers hooks only once', function(done) {
TestModel.observe('access', pushNameAndNext('access'));
TestModel.observe('before save', pushNameAndNext('before save'));
TestModel.observe('access', function(ctx, next) {
ctx.query = { where: { id: { neq: existingInstance.id } } };
next();
});
TestModel.updateOrCreate(
{ id: 'ignored', name: 'new name' },
function(err, instance) {
if (err) return done(err);
observersCalled.should.eql(['access', 'before save']);
done();
});
});
it('triggers `before save` hook on update', function(done) {
TestModel.observe('before save', pushContextAndNext());
TestModel.updateOrCreate(
{ id: existingInstance.id, name: 'updated name' },
function(err, instance) {
if (err) return done(err);
observedContexts.should.eql(aTestModelCtx({
where: { id: existingInstance.id },
data: { id: existingInstance.id, name: 'updated name' }
}));
done();
});
});
it('triggers `before save` hook on create', function(done) {
TestModel.observe('before save', pushContextAndNext());
TestModel.updateOrCreate(
{ id: 'new-id', name: 'a name' },
function(err, instance) {
if (err) return done(err);
if (dataSource.connector.updateOrCreate) {
// Atomic implementations of `updateOrCreate` cannot
// provide full instance as that depends on whether
// UPDATE or CREATE will be triggered
observedContexts.should.eql(aTestModelCtx({
where: { id: 'new-id' },
data: { id: 'new-id', name: 'a name' }
}));
} else {
// The default unoptimized implementation runs
// `instance.save` and thus a full instance is availalbe
observedContexts.should.eql(aTestModelCtx({
instance: { id: 'new-id', name: 'a name', extra: undefined }
}));
}
done();
});
});
it('applies updates from `before save` hook on update', function(done) {
TestModel.observe('before save', function(ctx, next) {
ctx.data.name = 'hooked';
next();
});
TestModel.updateOrCreate(
{ id: existingInstance.id, name: 'updated name' },
function(err, instance) {
if (err) return done(err);
instance.name.should.equal('hooked');
done();
});
});
it('applies updates from `before save` hook on create', function(done) {
TestModel.observe('before save', function(ctx, next) {
if (ctx.instance) {
ctx.instance.name = 'hooked';
} else {
ctx.data.name = 'hooked';
}
next();
});
TestModel.updateOrCreate(
{ id: 'new-id', name: 'new name' },
function(err, instance) {
if (err) return done(err);
instance.name.should.equal('hooked');
done();
});
});
// FIXME(bajtos) this fails with connector-specific updateOrCreate
// implementations, see the comment inside lib/dao.js (updateOrCreate)
it.skip('validates model after `before save` hook on update', function(done) {
TestModel.observe('before save', invalidateTestModel());
TestModel.updateOrCreate(
{ id: existingInstance.id, name: 'updated name' },
function(err, instance) {
(err || {}).should.be.instanceOf(ValidationError);
(err.details.codes || {}).should.eql({ name: ['presence'] });
done();
});
});
// FIXME(bajtos) this fails with connector-specific updateOrCreate
// implementations, see the comment inside lib/dao.js (updateOrCreate)
it.skip('validates model after `before save` hook on create', function(done) {
TestModel.observe('before save', invalidateTestModel());
TestModel.updateOrCreate(
{ id: 'new-id', name: 'new name' },
function(err, instance) {
(err || {}).should.be.instanceOf(ValidationError);
(err.details.codes || {}).should.eql({ name: ['presence'] });
done();
});
});
it('triggers `after save` hook on update', function(done) {
TestModel.observe('after save', pushContextAndNext());
TestModel.updateOrCreate(
{ id: existingInstance.id, name: 'updated name' },
function(err, instance) {
if (err) return done(err);
observedContexts.should.eql(aTestModelCtx({ instance: {
id: existingInstance.id,
name: 'updated name',
extra: undefined
}}));
done();
});
});
it('triggers `after save` hook on create', function(done) {
TestModel.observe('after save', pushContextAndNext());
TestModel.updateOrCreate(
{ id: 'new-id', name: 'a name' },
function(err, instance) {
if (err) return done(err);
observedContexts.should.eql(aTestModelCtx({ instance: {
id: instance.id,
name: 'a name',
extra: undefined
}}));
done();
});
});
});
describe('PersistedModel.deleteAll', function() {
it('triggers `access` hook with query', function(done) {
TestModel.observe('access', pushContextAndNext());
TestModel.deleteAll({ name: existingInstance.name }, function(err) {
if (err) return done(err);
observedContexts.should.eql(aTestModelCtx({
query: { where: { name: existingInstance.name } }
}));
done();
});
});
it('triggers `access` hook without query', function(done) {
TestModel.observe('access', pushContextAndNext());
TestModel.deleteAll(function(err) {
if (err) return done(err);
observedContexts.should.eql(aTestModelCtx({ query: { where: {} } }));
done();
});
});
it('applies updates from `access` hook', function(done) {
TestModel.observe('access', function(ctx, next) {
ctx.query = { where: { id: { neq: existingInstance.id } } };
next();
});
TestModel.deleteAll(function(err) {
if (err) return done(err);
findTestModels(function(err, list) {
if (err) return done(err);
(list || []).map(get('id')).should.eql([existingInstance.id]);
done();
});
});
});
it('triggers `before delete` hook with query', function(done) {
TestModel.observe('before delete', pushContextAndNext());
TestModel.deleteAll({ name: existingInstance.name }, function(err) {
if (err) return done(err);
observedContexts.should.eql(aTestModelCtx({
where: { name: existingInstance.name }
}));
done();
});
});
it('triggers `before delete` hook without query', function(done) {
TestModel.observe('before delete', pushContextAndNext());
TestModel.deleteAll(function(err) {
if (err) return done(err);
observedContexts.should.eql(aTestModelCtx({ where: {} }));
done();
});
});
it('applies updates from `before delete` hook', function(done) {
TestModel.observe('before delete', function(ctx, next) {
ctx.where = { id: { neq: existingInstance.id } };
next();
});
TestModel.deleteAll(function(err) {
if (err) return done(err);
findTestModels(function(err, list) {
if (err) return done(err);
(list || []).map(get('id')).should.eql([existingInstance.id]);
done();
});
});
});
it('aborts when `before delete` hook fails', function(done) {
TestModel.observe('before delete', nextWithError(expectedError));
TestModel.deleteAll(function(err, list) {
[err].should.eql([expectedError]);
TestModel.findById(existingInstance.id, function(err, inst) {
if (err) return done(err);
(inst ? inst.toObject() : 'null').should.eql(existingInstance.toObject());
done();
});
});
});
it('triggers `after delete` hook without query', function(done) {
TestModel.observe('after delete', pushContextAndNext());
TestModel.deleteAll(function(err) {
if (err) return done(err);
observedContexts.should.eql(aTestModelCtx({ where: {} }));
done();
});
});
it('triggers `after delete` hook without query', function(done) {
TestModel.observe('after delete', pushContextAndNext());
TestModel.deleteAll({ name: existingInstance.name }, function(err) {
if (err) return done(err);
observedContexts.should.eql(aTestModelCtx({
where: { name: existingInstance.name }
}));
done();
});
});
it('aborts when `after delete` hook fails', function(done) {
TestModel.observe('after delete', nextWithError(expectedError));
TestModel.deleteAll(function(err) {
[err].should.eql([expectedError]);
done();
});
});
});
describe('PersistedModel.prototype.delete', function() {
it('triggers `access` hook', function(done) {
TestModel.observe('access', pushContextAndNext());
existingInstance.delete(function(err) {
if (err) return done(err);
observedContexts.should.eql(aTestModelCtx({
query: { where: { id: existingInstance.id } }
}));
done();
});
});
it('applies updated from `access` hook', function(done) {
TestModel.observe('access', function(ctx, next) {
ctx.query = { where: { id: { neq: existingInstance.id } } };
next();
});
existingInstance.delete(function(err) {
if (err) return done(err);
findTestModels(function(err, list) {
if (err) return done(err);
(list || []).map(get('id')).should.eql([existingInstance.id]);
done();
});
});
});
it('triggers `before delete` hook', function(done) {
TestModel.observe('before delete', pushContextAndNext());
existingInstance.delete(function(err) {
if (err) return done(err);
observedContexts.should.eql(aTestModelCtx({
where: { id: existingInstance.id }
}));
done();
});
});
it('applies updated from `before delete` hook', function(done) {
TestModel.observe('before delete', function(ctx, next) {
ctx.where = { id: { neq: existingInstance.id } };
next();
});
existingInstance.delete(function(err) {
if (err) return done(err);
findTestModels(function(err, list) {
if (err) return done(err);
(list || []).map(get('id')).should.eql([existingInstance.id]);
done();
});
});
});
it('aborts when `before delete` hook fails', function(done) {
TestModel.observe('before delete', nextWithError(expectedError));
existingInstance.delete(function(err, list) {
[err].should.eql([expectedError]);
TestModel.findById(existingInstance.id, function(err, inst) {
if (err) return done(err);
(inst ? inst.toObject() : 'null').should.eql(existingInstance.toObject());
done();
});
});
});
it('triggers `after delete` hook', function(done) {
TestModel.observe('after delete', pushContextAndNext());
existingInstance.delete(function(err) {
if (err) return done(err);
observedContexts.should.eql(aTestModelCtx({
where: { id: existingInstance.id }
}));
done();
});
});
it('triggers `after delete` hook without query', function(done) {
TestModel.observe('after delete', pushContextAndNext());
TestModel.deleteAll({ name: existingInstance.name }, function(err) {
if (err) return done(err);
observedContexts.should.eql(aTestModelCtx({
where: { name: existingInstance.name }
}));
done();
});
});
it('aborts when `after delete` hook fails', function(done) {
TestModel.observe('after delete', nextWithError(expectedError));
TestModel.deleteAll(function(err) {
[err].should.eql([expectedError]);
done();
});
});
it('triggers hooks only once', function(done) {
TestModel.observe('access', pushNameAndNext('access'));
TestModel.observe('after delete', pushNameAndNext('after delete'));
TestModel.observe('access', function(ctx, next) {
ctx.query = { where: { id: { neq: existingInstance.id } } };
next();
});
existingInstance.delete(function(err) {
if (err) return done(err);
observersCalled.should.eql(['access', 'after delete']);
done();
});
});
});
describe('PersistedModel.updateAll', function() {
it('triggers `access` hook', function(done) {
TestModel.observe('access', pushContextAndNext());
TestModel.updateAll(
{ name: 'searched' },
{ name: 'updated' },
function(err, instance) {
if (err) return done(err);
observedContexts.should.eql(aTestModelCtx({ query: {
where: { name: 'searched' }
}}));
done();
});
});
it('applies updates from `access` hook', function(done) {
TestModel.observe('access', function(ctx, next) {
ctx.query = { where: { id: { neq: existingInstance.id } } };
next();
});
TestModel.updateAll(
{ id: existingInstance.id },
{ name: 'new name' },
function(err) {
if (err) return done(err);
findTestModels({ fields: ['id', 'name' ] }, function(err, list) {
if (err) return done(err);
(list||[]).map(toObject).should.eql([
{ id: existingInstance.id, name: existingInstance.name, extra: undefined },
{ id: '2', name: 'new name', extra: undefined }
]);
done();
});
});
});
it('triggers `before save` hook', function(done) {
TestModel.observe('before save', pushContextAndNext());
TestModel.updateAll(
{ name: 'searched' },
{ name: 'updated' },
function(err, instance) {
if (err) return done(err);
observedContexts.should.eql(aTestModelCtx({
where: { name: 'searched' },
data: { name: 'updated' },
}));
done();
});
});
it('applies updates from `before save` hook', function(done) {
TestModel.observe('before save', function(ctx, next) {
ctx.data = { name: 'hooked', extra: 'added' };
next();
});
TestModel.updateAll(
{ id: existingInstance.id },
{ name: 'updated name' },
function(err) {
if (err) return done(err);
loadTestModel(existingInstance.id, function(err, instance) {
if (err) return done(err);
instance.should.have.property('name', 'hooked');
instance.should.have.property('extra', 'added');
done();
});
});
});
it('triggers `after save` hook', function(done) {
TestModel.observe('after save', pushContextAndNext());
TestModel.updateAll(
{ id: existingInstance.id },
{ name: 'updated name' },
function(err) {
if (err) return done(err);
observedContexts.should.eql(aTestModelCtx({
where: { id: existingInstance.id },
data: { name: 'updated name' }
}));
done();
});
});
});
function pushContextAndNext() {
return function(context, next) {
context = deepCloneToObject(context);
if (typeof observedContexts === 'string') {
observedContexts = context;
return next();
}
if (!Array.isArray(observedContexts)) {
observedContexts = [observedContexts];
}
observedContexts.push(context);
next();
};
}
function pushNameAndNext(name) {
return function(context, next) {
observersCalled.push(name);
next();
};
}
function nextWithError(err) {
return function(context, next) {
next(err);
};
}
function invalidateTestModel() {
return function(context, next) {
if (context.instance) {
context.instance.name = '';
} else {
context.data.name = '';
}
next();
};
}
function aTestModelCtx(ctx) {
ctx.Model = TestModel;
return deepCloneToObject(ctx);
}
function findTestModels(query, cb) {
if (cb === undefined && typeof query === 'function') {
cb = query;
query = null;
}
TestModel.find(query, { notify: false }, cb);
}
function loadTestModel(id, cb) {
TestModel.findOne({ where: { id: id } }, { notify: false }, cb);
}
function uid() {
lastId += 1;
return '' + lastId;
}
function getLastGeneratedUid() {
return '' + lastId;
}
});
function deepCloneToObject(obj) {
return traverse(obj).map(function(x) {
if (x && x.toObject)
return x.toObject(true);
if (x && typeof x === 'function' && x.modelName)
return '[ModelCtor ' + x.modelName + ']';
});
}
function get(propertyName) {
return function(obj) {
return obj[propertyName];
};
}
function toObject(obj) {
return obj.toObject ? obj.toObject() : obj;
}
};