From 497ac802fc48669b1cd2b370372efbea4212a18d Mon Sep 17 00:00:00 2001
From: liabru <liabru@brm.io>
Date: Mon, 9 Mar 2020 21:05:05 +0000
Subject: [PATCH] add window global, stub require and handle bad values in test
 tools

---
 test/ExampleWorker.js | 4 +++-
 test/TestTools.js     | 4 +++-
 2 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/test/ExampleWorker.js b/test/ExampleWorker.js
index e30d6f63..093d7eef 100644
--- a/test/ExampleWorker.js
+++ b/test/ExampleWorker.js
@@ -4,6 +4,7 @@
 
 const stubBrowserFeatures = M => {
   const noop = () => ({ collisionFilter: {}, mouse: {} });
+  M.Common._requireGlobal = name => global[name];
   M.Render.create = () => ({ options: {}, bounds: { min: { x: 0, y: 0 }, max: { x: 800, y: 600 }}});
   M.Render.run = M.Render.lookAt = noop;
   M.Runner.create = M.Runner.run = noop;
@@ -30,7 +31,7 @@ const runExample = options => {
   const consoleOriginal = global.console;
 
   global.console = { log: () => {} };
-  global.document = {};
+  global.document = global.window = { addEventListener: () => {} };
   global.decomp = decomp;
   global.Matter = Matter;
 
@@ -76,6 +77,7 @@ const runExample = options => {
   }
 
   global.console = consoleOriginal;
+  global.window = undefined;
   global.document = undefined;
   global.decomp = undefined;
   global.Matter = undefined;
diff --git a/test/TestTools.js b/test/TestTools.js
index 3a6a302f..5688bb34 100644
--- a/test/TestTools.js
+++ b/test/TestTools.js
@@ -118,7 +118,9 @@ const worldCaptureIntrinsicBase = (obj, depth=0) => {
 };
 
 const similarity = (a, b) => {
-    const distance = Math.sqrt(a.reduce((sum, _val, i) => sum + Math.pow(a[i] - b[i], 2), 0));
+    const distance = Math.sqrt(a.reduce(
+        (sum, _val, i) => sum + Math.pow((a[i] || 0) - (b[i] || 0), 2), 0)
+    );
     return 1 / (1 + (distance / a.length));
 };