const chai = require('chai') const expect = chai.expect const mock = require('mock-fs') const path = require('path') chai.use(require('chai-as-promised')) var engine = require('../..')() var strictEngine = require('../..')({ strict_variables: true, strict_filters: true }) describe('error', function () { afterEach(function () { mock.restore() }) describe('TokenizationError', function () { it('should throw TokenizationError when tag illegal', function () { return expect(engine.parseAndRender('{% . a %}', {})).to.eventually .be.rejected .then(function (err) { expect(err.name).to.equal('TokenizationError') expect(err.message).to.contain('illegal tag syntax') }) }) it('should contain template content in err.message', function () { var html = ['1st', '2nd', 'X{% . a %} Y', '4th'] var message = [ ' 1| 1st', ' 2| 2nd', '>> 3| X{% . a %} Y', ' 4| 4th', 'TokenizationError' ] return expect(engine.parseAndRender(html.join('\n'))).to.eventually .be.rejected .then(function (err) { expect(err.message).to.equal('illegal tag syntax, line:3') expect(err.stack).to.contain(message.join('\n')) expect(err.name).to.equal('TokenizationError') }) }) it('should contain the whole template content in err.input', function () { var html = 'bar\nfoo{% . a %}\nfoo' return expect(engine.parseAndRender(html)).to.eventually .be.rejected .then(function (err) { expect(err.input).to.equal(html) }) }) it('should contain line number in err.line', function () { return expect(engine.parseAndRender('1\n2\n{% . a %}\n4', {})).to.eventually .be.rejected .then(function (err) { expect(err.name).to.equal('TokenizationError') expect(err.line).to.equal(3) }) }) it('should contain stack in err.stack', function () { return expect(engine.parseAndRender('{% . a %}')).to.eventually .be.rejected .then(function (err) { expect(err.message).to.contain('illegal tag syntax') expect(err.stack).to.contain('at Object.parse') }) }) describe('captureStackTrace compatibility', function () { var captureStackTrace = Error.captureStackTrace before(() => (Error.captureStackTrace = null)) after(() => (Error.captureStackTrace = captureStackTrace)) it('should use empty string if captureStackTrace not defined', function () { return expect(engine.parseAndRender('{% . a %}')).to.eventually .be.rejected .then(function (err) { expect(err.stack).to.contain('illegal tag syntax') expect(err.stack).to.not.contain('at Object.parse') }) }) }) it('should contain file path in err.file', function () { var html = '\n\n\n{% . a %}\n\n' mock({ '/foo.html': html }) return expect(engine.renderFile('/foo.html')).to.eventually .be.rejected .then(function (err) { mock.restore() expect(err.name).to.equal('TokenizationError') expect(err.file).to.equal(path.resolve('/foo.html')) }) }) }) describe('RenderError', function () { beforeEach(function () { engine = require('../..')({ root: '/' }) engine.registerTag('throwingTag', { render: function () { throw new Error('intended render error') } }) engine.registerTag('rejectingTag', { render: function () { return Promise.reject(new Error('intended render reject')) } }) engine.registerFilter('throwingFilter', () => { throw new Error('throwed by filter') }) }) it('should throw RenderError when tag throws', function () { var src = '{%throwingTag%}' return expect(engine.parseAndRender(src)).to.eventually .be.rejected .then(function (err) { expect(err.name).to.equal('RenderError') expect(err.message).to.contain('intended render error') }) }) it('should throw RenderError when tag rejects', function () { var src = '{%rejectingTag%}' return expect(engine.parseAndRender(src)).to.eventually .be.rejected .then(function (err) { expect(err.name).to.equal('RenderError') expect(err.message).to.contain('intended render reject') }) }) it('should throw RenderError when filter throws', function () { var src = '{{1|throwingFilter}}' return expect(engine.parseAndRender(src)).to.eventually .be.rejected .then(function (err) { expect(err.name).to.equal('RenderError') expect(err.message).to.contain('throwed by filter') }) }) it('should not throw when variable undefined by default', function () { return expect(engine.parseAndRender('X{{a}}Y')).to.eventually.equal('XY') }) it('should throw RenderError when variable not defined', function () { return expect(strictEngine.parseAndRender('{{a}}')).to.eventually .be.rejected .then(function (e) { expect(e).to.have.property('name', 'RenderError') expect(e.message).to.contain('undefined variable: a') }) }) it('should contain template context in err.stack', function () { var html = ['1st', '2nd', '3rd', 'X{%throwingTag%} Y', '5th', '6th', '7th'] var message = [ ' 2| 2nd', ' 3| 3rd', '>> 4| X{%throwingTag%} Y', ' 5| 5th', ' 6| 6th', ' 7| 7th', 'RenderError' ] return expect(engine.parseAndRender(html.join('\n'))).to.eventually .be.rejected .then(function (err) { expect(err.message).to.equal('intended render error, line:4') expect(err.stack).to.contain(message.join('\n')) expect(err.name).to.equal('RenderError') }) }) it('should contain original error info for {% layout %}', function () { mock({ '/throwing-tag.html': [ '1st', '2nd', '3rd', 'X{%throwingTag%} Y', '5th', '{%block%}{%endblock%}', '7th' ].join('\n') }) var html = '{%layout "throwing-tag.html"%}' var message = [ ' 2| 2nd', ' 3| 3rd', '>> 4| X{%throwingTag%} Y', ' 5| 5th', ' 6| {%block%}{%endblock%}', ' 7| 7th', 'RenderError' ] return expect(engine.parseAndRender(html)).to.eventually .be.rejected .then(function (err) { console.log(err.message) console.log(err.stack) expect(err.message).to.equal(`intended render error, file:${path.resolve('/throwing-tag.html')}, line:4`) expect(err.stack).to.contain(message.join('\n')) expect(err.name).to.equal('RenderError') }) }) it('should contain original error info for {% include %}', function () { var origin = ['1st', '2nd', '3rd', 'X{%throwingTag%} Y', '5th', '6th', '7th'] mock({ '/throwing-tag.html': origin.join('\n') }) var html = '{%include "throwing-tag.html"%}' var message = [ ' 2| 2nd', ' 3| 3rd', '>> 4| X{%throwingTag%} Y', ' 5| 5th', ' 6| 6th', ' 7| 7th', 'RenderError' ] return expect(engine.parseAndRender(html)).to.eventually .be.rejected .then(function (err) { expect(err.message).to.equal(`intended render error, file:${path.resolve('/throwing-tag.html')}, line:4`) expect(err.stack).to.contain(message.join('\n')) expect(err.name).to.equal('RenderError') }) }) it('should contain the whole template content in err.input', function () { var html = 'bar\nfoo{%throwingTag%}\nfoo' return expect(engine.parseAndRender(html)).to.eventually .be.rejected .then(function (err) { expect(err.input).to.equal(html) expect(err.name).to.equal('RenderError') }) }) it('should contain line number in err.line', function () { var src = '1\n2\n{{1|throwingFilter}}\n4' return expect(engine.parseAndRender(src)).to.eventually .be.rejected .then(function (err) { expect(err.line).to.equal(3) expect(err.name).to.equal('RenderError') }) }) it('should contain stack in err.stack', function () { return expect(engine.parseAndRender('{%rejectingTag%}')).to.eventually .be.rejected .then(function (err) { expect(err.message).to.contain('intended render reject') expect(err.stack).to.match(/at .*:\d+:\d+/) }) }) it('should contain file path in err.file', function () { var html = '\n\n\n{% throwingTag %}\n\n' mock({ '/foo.html': html }) return expect(engine.renderFile('/foo.html')).to.eventually .be.rejected .then(function (err) { mock.restore() console.log(err, err.name) expect(err.name).to.equal('RenderError') expect(err.file).to.equal(path.resolve('/foo.html')) }) }) }) describe('ParseError', function () { beforeEach(function () { engine = require('../..')() engine.registerTag('throwsOnParse', { parse: function () { throw new Error('intended parse error') } }) }) it('should throw RenderError when filter not defined', function () { return expect(strictEngine.parseAndRender('{{1 | a}}')).to.eventually .be.rejected .then(function (e) { expect(e).to.have.property('name', 'ParseError') expect(e.message).to.contain('undefined filter: a') }) }) it('should throw ParseError when tag not closed', function () { return expect(engine.parseAndRender('{% if %}')).to.eventually .be.rejected .then(function (err) { expect(err.name).to.equal('ParseError') expect(err.message).to.contain('tag {% if %} not closed') }) }) it('should throw ParseError when tag parse throws', function () { var src = '{%throwsOnParse%}' return expect(engine.parseAndRender(src)).to.eventually .be.rejected .then(function (err) { expect(err.name).to.equal('ParseError') expect(err.message).to.contain('intended parse error') }) }) it('should throw ParseError when tag not found', function () { var src = '{%if true%}\naaa{%endif%}\n{% -a %}\n3' return expect(engine.parseAndRender(src)).to.eventually .be.rejected .then(function (err) { expect(err.name).to.equal('ParseError') expect(err.message).to.contain('tag -a not found') }) }) it('should throw ParseError when tag not exist', function () { return expect(engine.parseAndRender('{% a %}')).to.eventually .be.rejected .then(function (err) { expect(err.name).to.equal('ParseError') expect(err.message).to.contain('tag a not found') }) }) it('should contain template context in err.stack', function () { var html = ['1st', '2nd', '3rd', 'X{% a %} {% enda %} Y', '5th', '6th', '7th'] var message = [ ' 2| 2nd', ' 3| 3rd', '>> 4| X{% a %} {% enda %} Y', ' 5| 5th', ' 6| 6th', ' 7| 7th', 'ParseError: tag a not found' ] return expect(engine.parseAndRender(html.join('\n'))).to.eventually .be.rejected .then(function (err) { expect(err.message).to.equal('tag a not found, line:4') expect(err.stack).to.contain(message.join('\n')) expect(err.name).to.equal('ParseError') }) }) it('should handle err.message when context not enough', function () { var html = ['1st', 'X{% a %} {% enda %} Y', '3rd', '4th'] var message = [ ' 1| 1st', '>> 2| X{% a %} {% enda %} Y', ' 3| 3rd', ' 4| 4th', 'ParseError: tag a not found' ] return expect(engine.parseAndRender(html.join('\n'))).to.eventually .be.rejected .then(function (err) { expect(err.message).to.equal('tag a not found, line:2') expect(err.stack).to.contain(message.join('\n')) }) }) it('should contain line number in err.line', function () { var html = '\n\n\n{% raw %}\n\n' return expect(engine.parseAndRender(html)).to.eventually .be.rejected .then(function (err) { expect(err.line).to.equal(4) }) }) it('should contain stack in err.stack', function () { return expect(engine.parseAndRender('{% -a %}')).to.eventually .be.rejected .then(function (err) { expect(err.stack).to.contain('ParseError: tag -a not found') expect(err.stack).to.match(/at .*:\d+:\d+\)/) }) }) it('should contain file path in err.file', function () { var html = '\n\n\n{% raw %}\n\n' mock({ '/foo.html': html }) return expect(engine.renderFile('/foo.html')).to.eventually .be.rejected .then(function (err) { mock.restore() expect(err.name).to.equal('ParseError') expect(err.file).to.equal(path.resolve('/foo.html')) }) }) }) })