From 93831f0dfc576182155c1090e56c6def890fefd6 Mon Sep 17 00:00:00 2001
From: Paul Ivanov <pi@berkeley.edu>
Date: Mon, 25 Nov 2013 18:13:26 -0800
Subject: [PATCH] clear output in-between test runs

---
 IPython/html/tests/casperjs/test_cases/isolated_svg.js | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/IPython/html/tests/casperjs/test_cases/isolated_svg.js b/IPython/html/tests/casperjs/test_cases/isolated_svg.js
index 0e2aa7a00..284999ab3 100644
--- a/IPython/html/tests/casperjs/test_cases/isolated_svg.js
+++ b/IPython/html/tests/casperjs/test_cases/isolated_svg.js
@@ -69,13 +69,16 @@ casper.notebook_test(function () {
     // now ensure that we can pass the same metadata dict to plain old display()
     this.thenEvaluate(function () {
         var cell = IPython.notebook.get_cell(0);
+        cell.clear_output();
         cell.set_text( "from IPython.display import display\n"
                      + "display(SVG(s1), metadata=dict(isolated=True))\n"
                      + "display(SVG(s2), metadata=dict(isolated=True))\n"
             );
         cell.execute();
     });
-   
+
+    this.wait_for_output(0);
+
     // same test as original
     this.then(function () {
         var colors = this.evaluate(function () {