[Caja] [google-caja] r3785 committed - Benchmark HTML/XML rendering....

[codesite-noreply]

Revision: 3785
Author: mikesamuel
Date: Wed Oct  7 12:53:10 2009
Log: Benchmark HTML/XML rendering.
http://codereview.appspot.com/124119
Emits benchmark data to the historical logs in the same way
DomParserTest does for parsing.

r=jas...@gmail.com

http://code.google.com/p/google-caja/source/detail?r=3785

Modified:
 /trunk/tests/com/google/caja/parser/html/NodesTest.java

=======================================
--- /trunk/tests/com/google/caja/parser/html/NodesTest.java	Thu Jul 23  
09:16:30 2009
+++ /trunk/tests/com/google/caja/parser/html/NodesTest.java	Wed Oct  7  
12:53:10 2009
@@ -14,9 +14,11 @@

 package com.google.caja.parser.html;

-import junit.framework.TestCase;
-
-public class NodesTest extends TestCase {
+import com.google.caja.util.CajaTestCase;
+
+import org.w3c.dom.Element;
+
+public class NodesTest extends CajaTestCase {
   public final void testDecode() throws Exception {
     assertEquals(Nodes.decode("1 < 2 && 4 > "3""),
                  "1 < 2 && 4 > \"3\"");
@@ -83,4 +85,20 @@
     assertEquals("&;", Nodes.decode("&;"));
     assertEquals("&bogus;", Nodes.decode("&bogus;"));
   }
-}
+
+  public final void testRenderSpeed() throws Exception {
+    Element doc = html(fromResource("amazon.com.html"));
+    benchmark(100, doc);  // prime the JIT
+    Thread.sleep(250);  // Let the JIT kick-in.
+    int microsPerRun = benchmark(250, doc);
+    // See extractVarZ in "tools/dashboard/dashboard.pl".
+    System.out.println(
+        " VarZ:" + getClass().getName() + ".msPerRun=" + microsPerRun);
+  }
+
+  private int benchmark(int nRuns, Element el) {
+    long t0 = System.nanoTime();
+    for (int i = nRuns; --i >= 0;) { Nodes.render(el); }
+    return (int) ((((double) (System.nanoTime() - t0)) / nRuns) / 1e3);
+  }
+}