const chai = require("chai"); const expect = chai.expect; const mock = require('mock-fs'); 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: illegal tag syntax', ]; 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.stack).to.contain('illegal tag syntax'); expect(err.stack).to.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('/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', 'Error: intended render error', ]; 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', 'Error: intended render error', ]; 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:/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', 'Error: intended render error', ]; return expect(engine.parseAndRender(html)).to.eventually .be.rejected .then(function(err) { expect(err.message).to.equal('intended render error, file:/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.stack).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(); expect(err.name).to.equal('RenderError'); expect(err.file).to.equal('/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', 'AssertionError: 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', 'AssertionError: 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 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() { 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('AssertionError: 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('/foo.html'); }); }); }); });