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<!--
Bug 1007200 - Create a framerate actor
-->
<head>
<meta charset="utf-8">
<title>Framerate actor test</title>
<script type="application/javascript" src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"></script>
<link rel="stylesheet" type="text/css" href="chrome://mochikit/content/tests/SimpleTest/test.css">
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<pre id="test">
<script>
window.onload = function() {
var Cu = Components.utils;
var Cc = Components.classes;
var Ci = Components.interfaces;
var {require} = Cu.import("resource://devtools/shared/Loader.jsm", {});
var {DebuggerClient} = require("devtools/shared/client/main");
var {DebuggerServer} = require("devtools/server/main");
var Services = require("Services");
// Always log packets when running tests.
Services.prefs.setBoolPref("devtools.debugger.log", true);
SimpleTest.registerCleanupFunction(function() {
Services.prefs.clearUserPref("devtools.debugger.log");
});
SimpleTest.waitForExplicitFinish();
var {FramerateFront} = require("devtools/shared/fronts/framerate");
function plotFPS(ticks, interval = 100, clamp = 60) {
var timeline = [];
var totalTicks = ticks.length;
// If the refresh driver didn't get a chance to tick before the
// recording was stopped, assume framerate was 0.
if (totalTicks == 0) {
timeline.push({ delta: 0, value: 0 });
timeline.push({ delta: interval, value: 0 });
return timeline;
}
var frameCount = 0;
var prevTime = ticks[0];
for (var i = 1; i < totalTicks; i++) {
var currTime = ticks[i];
frameCount++;
var elapsedTime = currTime - prevTime;
if (elapsedTime < interval) {
continue;
}
var framerate = Math.min(1000 / (elapsedTime / frameCount), clamp);
timeline.push({ delta: prevTime, value: framerate });
timeline.push({ delta: currTime, value: framerate });
frameCount = 0;
prevTime = currTime;
}
return timeline;
};
if (!DebuggerServer.initialized) {
DebuggerServer.init();
DebuggerServer.addBrowserActors();
}
var client = new DebuggerClient(DebuggerServer.connectPipe());
client.connect().then(function onConnect() {
client.listTabs(function onListTabs(aResponse) {
var form = aResponse.tabs[aResponse.selected];
var front = FramerateFront(client, form);
front.stopRecording().then(rawData => {
ok(rawData, "There should be a recording available.");
is(rawData.length, 0, "...but it should be empty.");
var timeline = plotFPS(rawData);
is(timeline.length, 2,
"There should be one measurement plotted, with two entries.");
info("The framerate should be assumed to be 0 if the recording is empty.");
is(timeline[0].delta, 0,
"The first time delta should be 0.");
is(timeline[0].value, 0,
"The first framerate value should be 0.");
is(timeline[1].delta, 100,
"The last time delta should be 100 (the default interval value).");
is(timeline[1].value, 0,
"The last framerate value should be 0.");
client.close().then(() => {
DebuggerServer.destroy();
SimpleTest.finish()
});
});
});
});
}
</script>
</pre>
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