From 5be44328f08455050e050719f3e6fb6875b5ea2d Mon Sep 17 00:00:00 2001
From: Jesse Schwartzentruber <truber@mozilla.com>
Date: Wed, 7 Jun 2017 10:28:50 -0400
Subject: [PATCH] Double the length of random distribution tests to decrease
 random failures.

---
 tests/random/mersennetwister.js | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/tests/random/mersennetwister.js b/tests/random/mersennetwister.js
index 8664287..9f55a6b 100644
--- a/tests/random/mersennetwister.js
+++ b/tests/random/mersennetwister.js
@@ -3,7 +3,7 @@
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
 QUnit.test("MersenneTwister test uniform distribution", function(assert) {
-  const N = Math.pow(2, 17), TRIES = 10, XSQ = 293.25; // quantile of chi-square dist. k=255, p=.05
+  const N = Math.pow(2, 18), TRIES = 10, XSQ = 293.25; // quantile of chi-square dist. k=255, p=.05
   let mt = new MersenneTwister();
   mt.seed(Math.random() * 0x100000000);
   for (let attempt = 0; attempt < TRIES; ++attempt) {
@@ -18,7 +18,7 @@ QUnit.test("MersenneTwister test uniform distribution", function(assert) {
       }
       let xsq = bins.reduce(function(a, v){ let e = N / bins.length; return a + Math.pow(v - e, 2) / e; }, 0);
       /*
-       * XSQ = scipy.stats.chi2.isf(.05, 511)
+       * XSQ = scipy.stats.chi2.isf(.05, 255)
        * if xsq > XSQ, the result is biased at 95% significance
        */
       if (xsq >= XSQ)
@@ -33,7 +33,7 @@ QUnit.test("MersenneTwister test uniform distribution", function(assert) {
 });
 
 QUnit.test("MersenneTwister test float distribution", function(assert) {
-  const N = Math.pow(2, 17), TRIES = 3, XSQ = 564.7; // quantile of chi-square dist. k=511, p=.05
+  const N = Math.pow(2, 18), TRIES = 3, XSQ = 564.7; // quantile of chi-square dist. k=511, p=.05
   let tries = [], mt = new MersenneTwister();
   mt.seed(Math.random() * 0x100000000);
   for (let attempt = 0; attempt < TRIES; ++attempt) {