From 66e9c68da40da6262dbf1b5d5ac393de315090a7 Mon Sep 17 00:00:00 2001
From: John-David Dalton <john.david.dalton@gmail.com>
Date: Fri, 18 Jul 2014 08:48:05 -0700
Subject: [PATCH] Add bizarro tests for shimmed `ArrayBuffer#slice`.

---
 test/index.html | 34 ++++++++++++++++++++++++++--------
 test/test.js    | 46 ++++++++++++++++++++++++++++++++--------------
 2 files changed, 58 insertions(+), 22 deletions(-)

diff --git a/test/index.html b/test/index.html
index 94101934f..79128e540 100644
--- a/test/index.html
+++ b/test/index.html
@@ -108,14 +108,28 @@
 				setProperty(document, '_createDocumentFragment', document.createDocumentFragment);
 				document.createDocumentFragment = function() {};
 
-				setProperty(window, '_Float64Array', window.Float64Array);
-				if (!window._Float64Array) {
-					setProperty(window, 'Float64Array', window.Uint8Array);
+				setProperty(window, '_ArrayBuffer', window.ArrayBuffer);
+				if (window.ArrayBuffer && window.Uint8Array && !new ArrayBuffer(0).slice) {
+					setProperty(window, 'ArrayBuffer', function(byteLength) {
+						var buffer = new _ArrayBuffer(byteLength);
+						buffer.slice = !byteLength ? Array.prototype.slice : function() {
+							var newBuffer = new _ArrayBuffer(byteLength),
+							    view = new Uint8Array(newBuffer);
+
+							view.set(new Uint8Array(this));
+							return newBuffer;
+						};
+						return buffer;
+					});
 				}
+				setProperty(window, '_Float64Array', window.Float64Array);
+				setProperty(window, 'Float64Array', window.Float64Array ? function() {} : window.Uint8Array);
+
+				setProperty(window, 'WinRTError', Error);
+
 				setProperty(window, 'exports', window);
 				setProperty(window, 'global', window);
 				setProperty(window, 'module', {});
-				setProperty(window, 'WinRTError', Error);
 			}
 
 			function removeBizarroMethods() {
@@ -159,19 +173,23 @@
 				} else {
 					delete String.prototype.contains;
 				}
-				if (!window._Float64Array) {
-					setProperty(window, 'Float64Array', undefined);
-				}
 				setProperty(Function.prototype, 'toString', Function.prototype._toString);
 				setProperty(Object.prototype, 'hasOwnProperty', Object.prototype._hasOwnProperty);
 
 				document.createDocumentFragment = document._createDocumentFragment;
 				setProperty(document, '_createDocumentFragment', undefined);
 
+				setProperty(window, 'ArrayBuffer', window._ArrayBuffer);
+				setProperty(window, '_ArrayBuffer', undefined);
+
+				setProperty(window, 'Float64Array', window._Float64Array);
+				setProperty(window, '_Float64Array', undefined);
+
+				setProperty(window, 'WinRTError', undefined);
+
 				setProperty(window, 'exports', undefined);
 				setProperty(window, 'global', undefined);
 				setProperty(window, 'module', undefined);
-				setProperty(window, 'WinRTError', undefined);
 
 				delete Array._isArray;
 				delete Date._now;
diff --git a/test/test.js b/test/test.js
index f3d1fe436..a0f95ecd1 100644
--- a/test/test.js
+++ b/test/test.js
@@ -339,16 +339,6 @@
       return result;
     });
 
-    // fake DOM
-    setProperty(root, 'window', {});
-    setProperty(root.window, 'document', {});
-    setProperty(root.window.document, 'createDocumentFragment', function() {
-      return { 'nodeType': 11 };
-    });
-
-    // fake `WinRTError`
-    setProperty(root, 'WinRTError', Error);
-
     // add extensions
     Function.prototype._method = _.noop;
 
@@ -385,10 +375,33 @@
     var _contains = String.prototype.contains;
     setProperty(String.prototype, 'contains',  _contains ? _.noop : Boolean);
 
-    var _Float64Array = root.Float64Array;
-    if (!_Float64Array) {
-      setProperty(root, 'Float64Array', root.Uint8Array);
+    var _ArrayBuffer = root.ArrayBuffer;
+    if (root.Uint8Array && _ArrayBuffer && !new _ArrayBuffer(0).slice) {
+      setProperty(window, 'ArrayBuffer', function(byteLength) {
+        var buffer = new _ArrayBuffer(byteLength);
+        buffer.slice = !byteLength ? slice : function() {
+          var newBuffer = new _ArrayBuffer(byteLength),
+              view = new Uint8Array(newBuffer);
+
+          view.set(new Uint8Array(this));
+          return newBuffer;
+        };
+        return buffer;
+      });
     }
+    var _Float64Array = root.Float64Array;
+    setProperty(root, 'Float64Array', _Float64Array ? _.noop : root.Uint8Array);
+
+    // fake `WinRTError`
+    setProperty(root, 'WinRTError', Error);
+
+    // fake DOM
+    setProperty(root, 'window', {});
+    setProperty(root.window, 'document', {});
+    setProperty(root.window.document, 'createDocumentFragment', function() {
+      return { 'nodeType': 11 };
+    });
+
     // clear cache so Lo-Dash can be reloaded
     emptyObject(require.cache);
 
@@ -416,7 +429,12 @@
     } else {
       delete String.prototype.contains;
     }
-    if (!_Float64Array) {
+    if (_ArrayBuffer) {
+      setProperty(root, 'ArrayBuffer', _ArrayBuffer);
+    }
+    if (_Float64Array) {
+      setProperty(root, 'Float64Array', _Float64Array);
+    } else {
       delete root.Float64Array;
     }
     delete root.window;