Added separate command for reference benchmark.

benchmarks.js

@@ -1,12 +1,36 @@
+var getTestPages = require("./test/bootstrap").getTestPages;
+
 var readability = require("./index.js");
 var Readability = readability.Readability;
 var JSDOMParser = readability.JSDOMParser;
 
-suite("Readability test suite benchmarks", function () {
-  set("iterations", 100);
+var referenceTestPages = [
+  "002",
+  "herald-sun-1",
+  "lifehacker-working",
+  "lifehacker-post-comment-load",
+  "medium-1",
+  "medium-2",
+  "salon-1",
+  "tmz-1",
+  "wapo-1",
+  "wapo-2",
+  "webmd-1",
+];
+
+var testPages = getTestPages();
+
+if (process.env.READABILITY_PERF_REFERENCE === "1") {
+  testPages = testPages.filter(function(testPage) {
+    return referenceTestPages.indexOf(testPage.dir) !== -1;
+  });
+}
+
+suite("Readability test page perf", function () {
+  set("iterations", 1);
   set("type", "static");
 
-  require("./test/bootstrap").getTestPages().forEach(function(testPage) {
+  testPages.forEach(function(testPage) {
     bench(testPage.dir + " perf", function() {
       new JSDOMParser().parse(testPage.source);
     });

index.js

@@ -1,9 +1,5 @@
 var path = require("path");
 var fs = require("fs");
-var prettyPrint = require("html").prettyPrint;
-var chai = require("chai");
-chai.config.includeStack = true;
-var expect = chai.expect;
 
 // We want to load Readability and JSDOMParser, which aren't set up as commonjs libraries,
 // and so we need to do some hocus-pocus with 'vm' to import them on a separate scope

package.json

@@ -6,7 +6,8 @@
   "scripts": {
     "test": "mocha test/test-*.js",
     "generate-testcase": "node test/generate-testcase.js",
-    "perf": "matcha benchmarks.js"
+    "perf": "matcha benchmarks.js",
+    "perf-reference": "READABILITY_PERF_REFERENCE=1 matcha benchmarks.js"
   },
   "repository": {
     "type": "git",

test/bootstrap.js

@@ -1,5 +1,6 @@
 var path = require("path");
 var fs = require("fs");
+var prettyPrint = require("html").prettyPrint;
 
 function readFile(path) {
   return fs.readFileSync(path, {encoding: "utf-8"}).trim();