simple perf testing harness with JSON parsing tests

- all tests should be under perf/
- all payloads should be under perf/data
- run tests with ./server.sh + ./test-perf.sh

We still lack a way to compare results against a baseline, but
this is better than nothing.

1 files changed, 55 insertions, 0 deletions

diff --git a/perf/jsonPerfSpec.js b/perf/jsonPerfSpec.js
new file mode 100644
index 00000000..c232aed8
--- /dev/null
+++ b/perf/jsonPerfSpec.js
@@ -0,0 +1,55 @@
+describe('json', function() {
+  xit('should parse json in a reasonable time', function() {
+    var totalSubstr = 0,
+        totalGetMatch = 0,
+        totalConsume = 0,
+        totalTime = 0,
+        runTimes = [];
+    
+    for (var i=0; i<10; i++) {
+      window.substrTime = 0;
+      window.getMatchTime = 0;
+      window.consumeTime = 0;
+      var start = Date.now();
+      expect(angular.fromJson(largeJsonString)).toBeTruthy();
+      var time = Date.now() - start;
+//      dump('parse time', time, 'consume', window.consumeTime,
+//                               'substr', window.substrTime,
+//                               'getMatch', window.getMatchTime);
+      totalTime += time;
+      totalSubstr += window.substrTime;
+      totalGetMatch += window.getMatchTime;
+      totalConsume += window.consumeTime;
+      runTimes.push(time);
+    }
+
+    totalGetMatch = totalGetMatch - totalSubstr;
+
+    dump("totals", totalTime,
+          "| consume", totalConsume, '' + Math.round(totalConsume/(totalTime/100)) + '%',
+          "| substr", totalSubstr, '' + Math.round(totalSubstr/(totalTime/100)) + '%',
+          "| getMatch", totalGetMatch, '' + Math.round(totalGetMatch/(totalTime/100)) + '%');
+    dump("run times", runTimes);
+    delete window.consumeTime;
+    delete window.substrTime;
+    delete window.getMatchTime;
+  });
+
+
+  it('angular parser', function() {
+    var duration = time(function() {
+      expect(angular.fromJson(largeJsonString)).toBeTruthy();
+    }, 1);
+
+    expect(duration).toBeLessThan(4000);
+  });
+
+
+  it('native json', function() {
+    var duration = time(function() {
+      expect(JSON.parse(largeJsonString)).toBeTruthy();
+    }, 1);
+
+    expect(duration).toBeLessThan(200);
+  });
+});