engines/test/shared/index.js

Template engine library with fast, synchronous rendering, based on consolidate.

'use strict';

var fs = require('fs');
var readFile = fs.readFile;
var readFileSync = fs.readFileSync;
var engines = require('../..');

exports.test = function (name) {
  var user = {
    name: 'Assemble'
  };

  describe(name, function () {
    afterEach(function () {
      fs.readFile = readFile;
      fs.readFileSync = readFileSync;
    });

    it('should support locals', function (done) {
      var path = 'test/fixtures/' + name + '/user.' + name;
      var str = fs.readFileSync(path).toString();
      var locals = {
        user: user,
        str: str
      };
      var html = engines[name](path, locals);
      html.should.equal('<p>Assemble</p>');
      done();
    });

    it('should not cache by default', function (done) {
      var path = 'test/fixtures/' + name + '/user.' + name;
      var str = fs.readFileSync(path).toString();
      var locals = {
        user: user,
        str: str
      };
      var calls = 0;
      var callMap = {
        atpl: 2,
        toffee: 2,
        jade: 2,
        ect: 2
      };
      var expected = callMap[name] || 0;

      fs.readFileSync = function () {
        ++calls;
        return readFileSync.apply(this, arguments);
      };

      fs.readFile = function () {
        ++calls;
        readFile.apply(this, arguments);
      };

      var html = engines[name](path, locals);
      html.should.equal('<p>Assemble</p>');
      html = engines[name](path, locals);
      html.should.equal('<p>Assemble</p>');
      calls.should.equal(expected);
      done();
    });

    it('should support caching', function (done) {
      var path = 'test/fixtures/' + name + '/user.' + name;
      var str = fs.readFileSync(path).toString();
      var locals = {
        user: user,
        cache: true,
        str: str
      };

      var html = engines[name](path, locals);

      fs.readFile = function (path) {
        done(new Error('fs.readFile() called with ' + path));
      };

      fs.readFileSync = function (path) {
        done(new Error('fs.readFileSync() called with ' + path));
      };

      html.should.equal('<p>Assemble</p>');
      html = engines[name](path, locals);
      html.should.equal('<p>Assemble</p>');
      done();
    });

    it('should support rendering a string', function (done) {
      var str = fs.readFileSync('test/fixtures/' + name + '/user.' + name).toString();
      var locals = {user: user, str: str};

      if ('renderSync' in engines[name]) {
        var html = engines[name].renderSync(str, locals);
        html.should.equal('<p>Assemble</p>');
      }

      done();
    });
  });
};