Merge pull request #18 from spenceralger/master

Implemented code coverage

package.json

@@ -17,7 +17,9 @@
     "grunt-contrib-watch": "~0.5.3",
     "grunt-contrib-jade": "~0.10.0",
     "grunt-contrib-less": "~0.9.0",
-    "grunt-cli": "~0.1.13"
+    "grunt-cli": "~0.1.13",
+    "istanbul": "~0.2.4",
+    "path-browserify": "0.0.0"
   },
   "scripts": {
     "test": "grunt test",

src/courier/courier.js

@@ -286,5 +286,17 @@ define(function (require) {
     this.fetch('doc');
   };
 
+  // get the list of open data source objects
+  // primarily for testing purposes
+  Courier.prototype._openSources = function (type) {
+    if (!type) {
+      return _.transform(this._refs, function (open, refs) {
+        [].push.apply(open, refs);
+      }, []);
+    }
+
+    return this._refs[type] || [];
+  };
+
   return Courier;
 });

src/kibana/require.config.js

@@ -15,7 +15,8 @@ require.config({
     lodash: '../bower_components/lodash/dist/lodash',
     moment: '../bower_components/moment/moment',
     gridster: '../bower_components/gridster/dist/jquery.gridster',
-    config: '../config'
+    configFile: '../config',
+    bower_components: '../bower_components'
   },
   shim: {
     angular: {

tasks/config/connect.js

@@ -1,20 +1,59 @@
 module.exports = function (grunt) {
+  var instrumentationMiddleware = require('../utils/instrumentation');
+  var amdWrapMiddleware = require('../utils/amd-wrapper');
+
   return {
     dev: {
       options: {
-        base: '<%= src %>'
+        middleware: function (connect, options, stack) {
+          stack = stack || [];
+
+          var root = grunt.config.get('root');
+
+          // when a request for an intrumented file comes in (?instrument=true)
+          // and it is included in `pattern`, it will be handled
+          // by this middleware
+          stack.push(instrumentationMiddleware({
+            // root that files should be served from
+            root: root,
+
+            // make file names easier to read
+            displayRoot: grunt.config.get('src'),
+
+            // filter the filenames that will be served
+            filter: function (filename) {
+              // return true if the filename should be
+              // included in the coverage report (results are cached)
+              return grunt.file.isMatch([
+                '**/src/**/*.js',
+                '!**/src/bower_components/**/*',
+                '!**/src/kibana/utils/{event_emitter,next_tick}.js'
+              ], filename);
+            }
+          }));
+
+          // minimize code duplication (especially in the istanbul reporter)
+          // by allowing node_modules to be requested in an AMD wrapper
+          stack.push(amdWrapMiddleware({
+            root: root
+          }));
+
+          // standard static middleware reading from the root
+          stack.push(connect.static(root));
+
+          // allow browsing directories
+          stack.push(connect.directory(root));
+
+          // redirect requests for '/' to '/src/'
+          stack.push(function (req, res, next) {
+            if (req.url !== '/') return next();
+            res.statusCode = 303;
+            res.setHeader('Location', '/src/');
+            res.end();
+          });
+
+          return stack;
         }
-    },
-    test: {
-      options: {
-        base: [
-          '<%= unitTestDir %>',
-          '<%= testUtilsDir %>',
-          '<%= src %>',
-          '<%= root %>/node_modules/mocha',
-          '<%= root %>/node_modules/expect.js'
-        ],
-        port: 8001
       }
     }
   };

tasks/config/jade.js

@@ -1,24 +1,41 @@
 module.exports = function (grunt) {
+  var path = require('path');
+
   return {
+    options: {
+      compileDebug: false
+    },
     test: {
-      src: [
+      files: {
-        '<%= unitTestDir %>/**/*.jade',
+        '<%= unitTestDir %>/index.html': '<%= unitTestDir %>/index.jade'
-        '<%= app %>/partials/**/*.jade',
+      },
-        '<%= app %>/apps/**/*.jade'
-      ],
-      expand: true,
-      ext: '.html',
       options: {
         data: function (src, dest) {
-          var pattern = grunt.config.process('<%= unitTestDir %>/**/*.js');
+          var unitTestDir = grunt.config.get('unitTestDir');
-          var tests = grunt.file.expand({}, pattern).map(function (filename) {
-            return filename.replace(grunt.config.get('unitTestDir'), '');
-          });
-          return { tests: JSON.stringify(tests) };
-        },
-        client: false
-      }
-    }
-  };
-};
 
+          // filter for non unit test related files
+          if (!~path.dirname(src).indexOf(unitTestDir)) return;
+
+          var pattern = unitTestDir + '/specs/**/*.js';
+          var appdir = grunt.config.get('app');
+
+          return {
+            tests: grunt.file.expand({}, pattern).map(function (filename) {
+              return path.relative(appdir, filename).replace(/\.js$/, '');
+            })
+          };
+        }
+      }
+    },
+    clientside: {
+      files: {
+        '<%= testUtilsDir %>/istanbul_reporter/report.jade.js': '<%= testUtilsDir %>/istanbul_reporter/report.clientside-jade'
+      },
+      options: {
+        client: true,
+        amd: true,
+        namespace: false // return the template directly in the amd wrapper
+      }
+    }
+  };
+};

tasks/config/jshint.js

@@ -3,7 +3,12 @@ module.exports = function (config) {
     // just lint the source dir
     source: {
       files: {
-        src: ['Gruntfile.js', '<%= src %>/**/*.js', '<%= unitTestDir %>/**/*.js', '<%= root %>/tasks/**/*.js']
+        src: [
+          'Gruntfile.js',
+          '<%= src %>/**/*.js',
+          '<%= unitTestDir %>/**/*.js',
+          '<%= root %>/tasks/**/*.js'
+        ]
       }
     },
     options: {

tasks/config/less.js

@@ -1,8 +1,7 @@
 module.exports = {
   src: {
     src: [
-      '<%= app %>/styles/**/*.less',
+      '<%= app %>/**/styles/**/*.less',
-      '<%= app %>/apps/**/*.less',
       '!<%= src %>/**/_*.less'
     ],
     expand: true,

tasks/config/mocha.js

@@ -1,12 +1,14 @@
 module.exports = {
-  unit: {
   options: {
     log: true,
     logErrors: true,
-      urls: [
-        'http://localhost:8001/'
-      ],
     run: false
+  },
+  unit: {
+    options: {
+      urls: [
+        'http://localhost:8000/test/unit/'
+      ]
     }
   }
 };

tasks/config/watch.js

@@ -1,23 +1,29 @@
 module.exports = function (grunt) {
   return {
     test: {
-      files: ['<%= unitTestDir %>/*.jade', '<%= unitTestDir %>/**/*.js'],
+      files: [
-      tasks: ['jade:test', 'mocha:unit']
+        '<%= unitTestDir %>/**/*.js'
+      ],
+      tasks: ['mocha:unit']
     },
     less: {
       files: [
-        '<%= app %>/**/*.less',
+        '<%= app %>/**/styles/**/*.less',
-        '<%= src %>/courier/**/*.less'
+        '!<%= src %>/**/_*.less'
       ],
       tasks: ['less']
     },
     jade: {
       files: [
-        '<%= app %>/**/*.jade',
+        '<%= unitTestDir %>/index.jade'
-        '<%= src %>/courier/**/*.jade',
-        '!<%= unitTestDir %>/**/*.jade'
       ],
-      tasks: ['jade']
+      tasks: ['jade:test']
+    },
+    clientside_jade: {
+      files: [
+        '<%= testUtilsDir %>/istanbul_reporter/report.clientside-jade'
+      ],
+      tasks: ['jade:clientside']
     }
   };
 };

tasks/dev.js

@@ -1,3 +1,8 @@
 module.exports = function (grunt) {
-  grunt.registerTask('dev', ['less', 'jade', 'connect:dev', 'watch']);
+  grunt.registerTask('dev', [
+    'less',
+    'jade',
+    'connect:dev',
+    'watch'
+  ]);
 };

tasks/server.js

@@ -1,4 +1,3 @@
 module.exports = function (grunt) {
   grunt.registerTask('server', ['connect:dev:keepalive']);
-  grunt.registerTask('test_server', ['connect:test:keepalive']);
 };

tasks/test.js

@@ -2,13 +2,19 @@ module.exports = function (grunt) {
   /* jshint scripturl:true */
   grunt.registerTask('test', [
     'jshint',
-    'connect:test',
+    'connect:dev',
-    'jade:test',
+    'jade',
     'mocha:unit'
   ]);
 
+  grunt.registerTask('coverage', [
+    'blanket',
+    'connect:dev',
+    'mocha:coverage'
+  ]);
+
   grunt.registerTask('test:watch', [
-    'connect:test',
+    'connect:dev',
     'watch:test'
   ]);
 };

tasks/utils/amd-wrapper.js

@@ -0,0 +1,26 @@
+module.exports = function amdWrapMiddleware(opts) {
+  opts = opts || {};
+
+  var root = opts.root || '/';
+  var path = require('path');
+  var fs = require('fs');
+  var pathPrefix = opts.pathPrefix || '/amd-wrap/';
+
+  return function (req, res, next) {
+    // only allow prefixed requests
+    if (req.url.substring(0, pathPrefix.length) !== pathPrefix) return next();
+
+    // strip the prefix and form the filename
+    var filename = path.join(root, req._parsedUrl.pathname.replace('/amd-wrap/', ''));
+
+    fs.readFile(filename, 'utf8', function (err, contents) {
+      // file does not exist
+      if (err) return next(err.code === 'ENOENT' ? void 0 : err);
+
+      // respond with the wrapped code
+      res.statusCode = 200;
+      res.setHeader('Content-Type', 'application/javascript');
+      res.end('define(function (require, exports, module) {\n' + contents + '\n});');
+    });
+  };
+};

tasks/utils/instrumentation.js

@@ -0,0 +1,77 @@
+var Istanbul = require('istanbul');
+var i = new Istanbul.Instrumenter({
+  embedSource: true,
+  preserveComments: true,
+  noAutoWrap: true
+});
+
+module.exports = function instrumentationMiddleware(opts) {
+  var fs = require('fs');
+  var path = require('path');
+
+  // for root directory that files will be served from
+  var root = opts.root || '/';
+
+  // the root directory used to create a relative file path
+  // for display in coverage reports
+  var displayRoot = opts.displayRoot || null;
+
+  // filter the files in root that can be instrumented
+  var filter = opts.filter || function (filename) {
+    // by default only instrument *.js files
+    return /\.js$/.test(filename);
+  };
+
+  // cache filename resolution
+  var fileMap = {};
+
+  function filenameForReq(req) {
+    if (!~req.url.indexOf('instrument=true')) return false;
+
+    // expected absolute path to the file
+    var filename = path.join(root, req._parsedUrl.pathname);
+
+    // shortcut for dev where we could be reloading on every save
+    if (fileMap[filename] !== void 0) return fileMap[filename];
+
+    var ret = filename;
+
+    if (!fs.existsSync(filename) || !opts.filter(filename)) {
+      ret = false;
+    }
+
+    // cache the return value for next time
+    fileMap[filename] = ret;
+    return ret;
+  }
+
+  return function (req, res, next) {
+    // resolve the request to a readable filename
+    var filename = filenameForReq(req);
+    // the file either doesn't exist of it was filtered out by opts.filter
+    if (!filename) return next();
+
+    fs.readFile(filename, 'utf8', function (err, content) {
+      if (err) {
+        if (err.code !== 'ENOENT') {
+          // other issue, report!
+          return next(err);
+        }
+
+        // file was deleted, clear cache and move on
+        delete fileMap[filename];
+        return next();
+      }
+
+      res.statusCode = 200;
+      res.setHeader('Content-Type', 'application/javascript');
+      res.end(i.instrumentSync(
+        content,
+        // make file names easier to read
+        displayRoot ? path.relative(displayRoot, filename) : filename
+      ));
+    });
+  };
+
+
+};

test/.jshintrc

@@ -1,8 +1,6 @@
 {
   "extends": "../src/.jshintrc",
 
-  "white": false,
-
   "globals": {
     "module": false,
     "inject": false,

test/unit/index.html

@@ -1,9 +1,11 @@
-<!DOCTYPE html><html><head><title>Kibana4 Tests</title><link rel="stylesheet" href="mocha.css"></head><body><div id="mocha"></div><script src="expect.js"></script><script src="mocha.js"></script><script>mocha.setup('bdd');
+<!DOCTYPE html><html><head><title>Kibana4 Tests</title><link rel="stylesheet" href="/node_modules/mocha/mocha.css"></head><body><div id="mocha"></div><script src="/node_modules/expect.js/expect.js"></script><script src="/node_modules/mocha/mocha.js"></script><script src="/src/bower_components/requirejs/require.js"></script><script src="/src/kibana/require.config.js"></script><script type="text/javascript">window.COVERAGE = !!(/coverage=true/i.test(location.search));
-// sauce labs & selenium inject global variables that break this
+mocha.setup('bdd');
-// mocha.checkLeaks();
+
-// mocha.globals(['mochaRunner', 'angular']);</script><script src="bower_components/requirejs/require.js"></script><script src="kibana/require.config.js"></script><script type="text/javascript">require.config({
+require.config({
+  baseUrl: '/src/kibana',
   paths: {
-     sinon: '../sinon' 
+    sinon: '../../test/utils/sinon',
+    istanbul_reporter: '../../test/utils/istanbul_reporter'
   },
   shim: {
     'sinon/sinon': {
@@ -12,10 +14,29 @@
       ],
       exports: 'sinon'
     }
-   }
+  },
+  // mark all requested files with instrument query param
+  urlArgs: COVERAGE ? 'instrument=true' : void 0
 });
-require(["/fixtures/field_mapping.js","/specs/apps/dashboard/index.js","/specs/apps/dashboard/mocks/modules.js","/specs/calculate_indices.js","/specs/courier.js","/specs/data_source.js","/specs/mapper.js"], function () {
+
+function setupCoverage(done) {
+  document.title = document.title.replace('Tests', 'Coverage');
+  require(['istanbul_reporter/reporter'], function (IstanbulReporter) {
+    mocha.reporter(IstanbulReporter);
+    done();
+  });
+}
+
+function runTests() {
+  require(["../../test/unit/specs/apps/dashboard/index","../../test/unit/specs/apps/dashboard/mocks/modules","../../test/unit/specs/calculate_indices","../../test/unit/specs/courier","../../test/unit/specs/data_source","../../test/unit/specs/mapper"], function () {
     window.mochaRunner = mocha.run().on('end', function () {
       window.mochaResults = this.stats;
     });
-});</script></body></html>
+  });
+}
+
+if (COVERAGE) {
+  setupCoverage(runTests);
+} else {
+  runTests();
+}</script></body></html>

test/unit/index.jade

@@ -2,22 +2,22 @@ doctype html
 html
   head
     title Kibana4 Tests
-    link(rel="stylesheet", href="mocha.css")
+    link(rel="stylesheet", href='/node_modules/mocha/mocha.css')
   body
     #mocha
-    script(src="expect.js")
+    script(src='/node_modules/expect.js/expect.js')
-    script(src="mocha.js")
+    script(src='/node_modules/mocha/mocha.js')
-    script.
+    script(src='/src/bower_components/requirejs/require.js')
-      mocha.setup('bdd');
+    script(src='/src/kibana/require.config.js')
-      // sauce labs & selenium inject global variables that break this
-      // mocha.checkLeaks();
-      // mocha.globals(['mochaRunner', 'angular']);
-    script(src="bower_components/requirejs/require.js")
-    script(src="kibana/require.config.js")
     script(type="text/javascript").
+      window.COVERAGE = !!(/coverage=true/i.test(location.search));
+      mocha.setup('bdd');
+
       require.config({
+        baseUrl: '/src/kibana',
         paths: {
-           sinon: '../sinon' 
+          sinon: '../../test/utils/sinon',
+          istanbul_reporter: '../../test/utils/istanbul_reporter'
         },
         shim: {
           'sinon/sinon': {
@@ -26,10 +26,29 @@ html
             ],
             exports: 'sinon'
           }
-         }
+        },
+        // mark all requested files with instrument query param
+        urlArgs: COVERAGE ? 'instrument=true' : void 0
       });
-      require(!{tests}, function () {
+
+      function setupCoverage(done) {
+        document.title = document.title.replace('Tests', 'Coverage');
+        require(['istanbul_reporter/reporter'], function (IstanbulReporter) {
+          mocha.reporter(IstanbulReporter);
+          done();
+        });
+      }
+
+      function runTests() {
+        require(!{JSON.stringify(tests)}, function () {
           window.mochaRunner = mocha.run().on('end', function () {
             window.mochaResults = this.stats;
           });
         });
+      }
+
+      if (COVERAGE) {
+        setupCoverage(runTests);
+      } else {
+        runTests();
+      }

test/unit/specs/apps/dashboard/index.js

@@ -4,7 +4,7 @@ define(function (require) {
   var _ = require('lodash');
   var $ = require('jquery');
   var sinon = require('sinon/sinon');
-  var configFile = require('../../../config.js');
+  var configFile = require('configFile');
 
   // Load the kibana app dependencies.
   require('angular-route');

test/unit/specs/courier.js

@@ -13,7 +13,18 @@ define(function (require) {
       expect(courier).to.be.a(Courier);
     });
 
-    it('knows when a DataSource object has event listeners for the results event');
+    it('knows when a DataSource object has event listeners for the results event', function () {
+      var courier = new Courier();
+      var ds = courier.createSource('doc');
+
+      expect(courier._openSources('doc')).to.have.length(0);
+      ds.on('results', function () {});
+      expect(courier._openSources('doc')).to.have.length(1);
+      ds.removeAllListeners('results');
+      expect(courier._openSources('doc')).to.have.length(0);
+    });
+
+
     it('executes queries on the interval for searches that have listeners for results');
 
     describe('events', function () {

test/unit/specs/mapper.js

@@ -1,11 +1,11 @@
 define(function (require) {
-  var elasticsearch = require('../bower_components/elasticsearch/elasticsearch.js');
+  var elasticsearch = require('bower_components/elasticsearch/elasticsearch');
   var _ = require('lodash');
   var sinon = require('sinon/sinon');
   var Courier = require('courier/courier');
   var DataSource = require('courier/data_source/data_source');
   var Mapper = require('courier/mapper');
-  var fieldMapping = require('../fixtures/field_mapping.js');
+  var fieldMapping = require('../fixtures/field_mapping');
 
   var client = new elasticsearch.Client({
     host: 'localhost:9200',
@@ -41,7 +41,9 @@ define(function (require) {
         }
       });
 
-      sinon.stub(client, 'delete', function (params, callback) {callback(undefined,true);});
+      sinon.stub(client, 'delete', function (params, callback) {
+        callback(undefined, true);
+      });
     });
 
     afterEach(function () {

test/utils/istanbul_reporter/reporter.js

@@ -0,0 +1,239 @@
+/**
+ * TODO: move this into it's own module, with it's own dependencies
+ */
+
+require.config({
+  paths: {
+    // jade runtime is required by the AMD wrapped jade templates as "jade"
+    jade: '/amd-wrap/node_modules/grunt-contrib-jade/node_modules/jade/runtime'
+  }
+});
+
+// fake fs module to make jade/runtime.js happy
+define('fs', function () {});
+
+// fake process obejct to make browserify-path happy
+window.process = window.process || { cwd: function () { return '.'; }};
+
+// the actual reporter module
+define(function (require) {
+
+  var _ = require('lodash');
+  var $ = require('jquery');
+
+  var InsertionText = require('/amd-wrap/node_modules/istanbul/lib/util/insertion-text.js');
+  var objUtils = require('/amd-wrap/node_modules/istanbul/lib/object-utils.js');
+  // var annotate = require('/amd-wrap/node_modules/istanbul/lib/annotate.js');
+  var Progress = require('/amd-wrap/node_modules/mocha/lib/browser/progress.js');
+  var path = require('/amd-wrap/node_modules/path-browserify/index.js');
+
+  var template = require('./report.jade');
+
+  var Base = window.Mocha.reporters.Base;
+
+  function IstanbulReporter(runner) {
+    // "inherit" the base reporters characteristics
+    Base.call(this, runner);
+
+    var stats = this.stats;
+    var gotoFile = window.location.hash;
+    if (gotoFile) window.location.hash = '';
+
+    $(document.body)
+      .html('<center><canvas width="40" height="40"></canvas></center>');
+
+    var canvas = document.getElementsByTagName('canvas')[0];
+    var ctx;
+    var progress;
+    if (canvas.getContext) {
+      var ratio = window.devicePixelRatio || 1;
+      canvas.style.width = canvas.width;
+      canvas.style.height = canvas.height;
+      canvas.width *= ratio;
+      canvas.height *= ratio;
+      ctx = canvas.getContext('2d');
+      ctx.scale(ratio, ratio);
+      progress = new Progress();
+      progress.size(40);
+    }
+
+    runner.on('test end', function () {
+      if (progress) {
+        progress
+          .update((stats.tests / this.total) * 100 || 0)
+          .draw(ctx);
+      }
+    });
+
+    runner.on('end', function () {
+      var stats = _.omit(this.stats, 'start', 'end', 'suites');
+
+      stats['create report'] = Date.now();
+      $(document.body).empty().append($(createReport())); // attempt to force parsing immediately
+      stats['create report'] = Date.now() - stats['create report'];
+
+      toSec(stats, 'create report');
+      toSec(stats, 'duration');
+
+      linkNav();
+      show(stats);
+      if (gotoFile) {
+        var header = document.getElementById(gotoFile.substring(1));
+        if (header) {
+          window.location.hash = gotoFile;
+          document.body.scrollTop = header.offsetTop;
+        }
+      }
+    });
+  }
+
+  function createReport() {
+    var summary = objUtils.summarizeCoverage(window.__coverage__);
+
+    var dirs = _(window.__coverage__)
+      .map(convertFile)
+      .groupBy(function (file) {
+        var dir = path.dirname(file.filename);
+        return dir === '.' ? '' : dir;
+      })
+      .transform(function (dirs, files, dirname) {
+        _.each(files, function (file) {
+          file.relname = dirname ? path.relative(dirname, file.filename) : file.filename;
+        });
+
+        dirs.push({
+          name: dirname,
+          files: files,
+          coverage: _.reduce(files, function (sum, file) {
+            return sum + file.coverage;
+          }, 0) / files.length
+        });
+      }, [])
+      .sortBy('name')
+      .value();
+
+    return template({
+      cov: {
+        dirs: dirs,
+        coverage: summary.lines.pct,
+        sloc: summary.lines.total,
+        hits: summary.lines.covered,
+        misses: summary.lines.total - summary.lines.covered
+      },
+      dirname: path.dirname,
+      relative: path.relative,
+      coverageClass: function (coverage) {
+        if (coverage >= 75) return 'high';
+        if (coverage >= 50) return 'medium';
+        if (coverage >= 25) return 'low';
+        return 'terrible';
+      }
+    });
+  }
+
+  function convertFile(file) {
+    var summary = objUtils.summarizeFileCoverage(file);
+    var count = 0;
+    var structured = file.code.map(function (str) {
+      count += 1;
+      return {
+        line: count,
+        covered: null,
+        text: new InsertionText(str, true)
+      };
+    });
+    var html = '';
+
+    structured.unshift({
+      line: 0,
+      covered: null,
+      text: new InsertionText('')
+    });
+
+    _.forOwn(file.l, function (count, lineNumber) {
+      structured[lineNumber].covered = count > 0 ? true : false;
+    });
+
+    // annotate.Lines(file, structured);
+    //note: order is important, since statements typically result in spanning the whole line and doing branches late
+    //causes mismatched tags
+    // annotate.Branches(file, structured);
+    // annotate.Functions(file, structured);
+    // annotate.Statements(file, structured);
+
+    structured.shift();
+
+    var context = {
+      filename: file.path,
+      sloc: summary.lines.total,
+      coverage: summary.lines.pct,
+      hits: summary.lines.covered,
+      misses: summary.lines.total - summary.lines.covered,
+      source: _.map(structured, function (line, lineNumber) {
+        return {
+          coverage: file.l[line.line],
+          source: line.text + ''
+        };
+      })
+    };
+
+    return context;
+
+    // writer.write(detailTemplate(context));
+    // writer.write('</table></pre>\n');
+    // writer.write(footerTemplate(templateData));
+  }
+
+  function linkNav() {
+    var headings = $('h2').toArray();
+
+    $(window).scroll(function (e) {
+      var heading = find(window.scrollY);
+      if (!heading) return;
+      var links = document.querySelectorAll('#menu a')
+        , link;
+
+      for (var i = 0, len = links.length; i < len; ++i) {
+        link = links[i];
+        link.className = link.getAttribute('href') === '#' + heading.id
+          ? 'active'
+          : '';
+      }
+    });
+
+    function find(y) {
+      var i = headings.length
+        , heading;
+
+      while (i--) {
+        heading = headings[i];
+        if (y >= heading.offsetTop) {
+          return heading;
+        }
+      }
+    }
+  }
+
+  function toSec(stats, prop) {
+    return stats[prop] = (stats[prop] / 1000).toFixed(2) + ' sec';
+  }
+
+  function show(info) {
+    var width = _(info).keys().sortBy('length').pop().length;
+
+    $('<pre>')
+      .addClass('coverage-stats')
+      .appendTo('#menu')
+      .text(
+        _.map(info, function (val, name) {
+          var row = val + ' - ' + name;
+          if (width - name.length) {
+            row += (new Array(width - name.length + 1)).join(' ');
+          }
+          return row;
+        }).join('\n')
+      );
+  }
+
+  return IstanbulReporter;
+});