From db55e86e91fce79a49950bfef0d00eb24315f057 Mon Sep 17 00:00:00 2001
From: Marc Laval <mlaval@amadeus.com>
Date: Wed, 3 Jan 2018 14:05:33 +0100
Subject: [PATCH] fix(core): make all render3 tests pass in IE9 (#21279)

PR Close #21279
---
 packages/core/src/render3/instructions.ts             | 5 +++--
 packages/platform-browser/testing/src/browser_util.ts | 5 +++--
 2 files changed, 6 insertions(+), 4 deletions(-)

diff --git a/packages/core/src/render3/instructions.ts b/packages/core/src/render3/instructions.ts
index cd8f6b268d..35b24224be 100644
--- a/packages/core/src/render3/instructions.ts
+++ b/packages/core/src/render3/instructions.ts
@@ -596,8 +596,9 @@ export function elementAttribute(index: number, attrName: string, value: any): v
           element.native.removeAttribute(attrName);
     } else {
       (renderer as ProceduralRenderer3).setAttribute ?
-          (renderer as ProceduralRenderer3).setAttribute(element.native, attrName, value) :
-          element.native.setAttribute(attrName, value);
+          (renderer as ProceduralRenderer3)
+              .setAttribute(element.native, attrName, stringify(value)) :
+          element.native.setAttribute(attrName, stringify(value));
     }
   }
 }
diff --git a/packages/platform-browser/testing/src/browser_util.ts b/packages/platform-browser/testing/src/browser_util.ts
index 875e378d56..221c924fe9 100644
--- a/packages/platform-browser/testing/src/browser_util.ts
+++ b/packages/platform-browser/testing/src/browser_util.ts
@@ -104,10 +104,11 @@ export function stringifyElement(el: any /** TODO #9100 */): string {
     for (let i = 0; i < keys.length; i++) {
       const key = keys[i];
       const attValue = attributeMap.get(key);
+      const lowerCaseKey = key.toLowerCase();
       if (typeof attValue !== 'string') {
-        result += ` ${key}`;
+        result += ` ${lowerCaseKey}`;
       } else {
-        result += ` ${key}="${attValue}"`;
+        result += ` ${lowerCaseKey}="${attValue}"`;
       }
     }
     result += '>';