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// Copyright 2006 Google Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
// implied. See the License for the specific language governing
// permissions and limitations under the License.
/**
* @pageoverview Some logic for the jstemplates test pages.
*
* @author Steffen Meschkat (mesch@google.com)
*/
function elem(id) {
return document.getElementById(id);
}
/**
* Are we actively profiling JstProcessor?
* @type boolean
*/
var profiling = false;
logHtml = function(html) {
elem('log').innerHTML += html + '<br/>';
};
/**
* Initializer for interactive test: copies the value from the actual
* template HTML into a text area to make the HTML source visible.
*/
function jsinit() {
elem('template').value = elem('tc').innerHTML;
}
/**
* Interactive test.
*
* @param {boolean} reprocess If true, reprocesses the output of the
* previous invocation.
*/
function jstest(reprocess) {
var jstext = elem('js').value;
var input = jsEval(jstext);
var t;
if (reprocess) {
t = elem('out');
} else {
elem('tc').innerHTML = elem('template').value;
t = jstGetTemplate('t');
elem('out').innerHTML = '';
elem('out').appendChild(t);
}
if (profiling) Profiler.reset();
jstProcess(new JsEvalContext(input), t);
if (profiling) Profiler.dump();
elem('html').value = elem('out').innerHTML;
}
/**
* Performance test: jst initial processing.
*
* @param {Object} data Test data to apply the template to.
*/
function perf1(data) {
elem('out').innerHTML = '';
var t = jstGetTemplate('t1');
elem('out').appendChild(t);
if (profiling) Profiler.reset();
jstProcess(new JsEvalContext(data), t);
if (profiling) Profiler.dump();
}
/**
* Performance test: jst reprocessing or previous processing output.
*
* @param {Object} data Test data to apply the template to.
*/
function perf1a(data) {
if (profiling) Profiler.reset();
jstProcess(new JsEvalContext(data), elemOrDie('out'));
if (profiling) Profiler.dump();
}
/**
* Performance test: jst initial processing, with display:none during
* processing.
*
* @param {Object} data Test data to apply the template to.
*/
function perf1b(data) {
var o = elem('out');
o.innerHTML = '';
var t = jstGetTemplate('t1');
o.appendChild(t);
displayNone(o);
if (profiling) Profiler.reset();
jstProcess(new JsEvalContext(data), t);
if (profiling) Profiler.dump();
displayDefault(o);
}
/**
* Performance test: create output procedurally as string and assign
* to innerHTML.
*
* @param {Object} data Test data to apply the template to.
*/
function perf2(data) {
var t = [];
t.push("<table><tr><th>item</th><th>label</th><th>address</th></tr>");
for (var i = 0; i < data.entries.length; ++i) {
var e = data.entries[i];
t.push("<tr><td>" + i + "</td><td>" + e.label + "</td><td>" +
e.address + "</td></tr>");
}
t.push("</table>");
elem("out").innerHTML = t.join('');
}
/**
* A test runner for a test. Does the timing. @constructor
*
* @param {number} times number of iterations the test is executed.
* @param {Function} test The test to execute.
* @param {Function} result Function will be called with the execution
* time as argument.
*/
function TestRun(times, test, result) {
this.count_ = 0;
this.times_ = times;
this.test_ = test;
this.result_ = result;
this.start_ = (new Date).valueOf();
this.run_();
}
/**
* Executes the test run.
*/
TestRun.prototype.run_ = function() {
if (this.count_ < this.times_) {
this.test_(this.count_);
this.count_ += 1;
objectSetTimeout(this, this.run_, 0);
} else {
this.stop_ = (new Date).valueOf();
this.result_(this.stop_ - this.start_);
}
};
/**
* Creates a testrun function for test count invocations of function
* f, whose runtime will be output to the element with is given in
* result.
*
* @param {Object} data The test data object.
* @param {Function} f
* @param {number} count
* @param {string} result
*/
function createTestRun(count, test) {
var data = {
entries: []
};
for (var i = 0; i < count; ++i) {
data.entries.push({ label: "label" + i, address: "address" + i });
}
// This function is passed to the TimeoutSequence, and receives the
// TimeoutSequence as argument on invocation.
return function(s) {
new TestRun(1, function(i) {
window[test](data);
}, function(time) {
elem(test + '-' + count).innerHTML = time + 'ms';
s.run();
});
};
}
/**
* Runs all tests the given number of times. Invoked from the HTML page.
*
* @param {number} count
*/
function jsperf(count) {
elemOrDie('log').innerHTML = '';
profiling = !!elemOrDie('profile').checked;
if (profiling && !JstProcessor.profiling_) {
JstProcessor.profiling_ = true;
Profiler.monitorAll(proto(JstProcessor), false);
}
var s = new TimeoutSequence(null, null, true);
s.add(createTestRun(count, "perf1"));
s.add(createTestRun(count, "perf1b"));
s.add(createTestRun(count, "perf1a"));
s.add(createTestRun(count, "perf2"));
s.run();
}
function run(test, count) {
var data = {
entries: []
};
for (var i = 0; i < count; ++i) {
data.entries.push({ label: "label" + i, address: "address" + i });
}
new TestRun(1, function() {
window[test](data);
}, function(time) {
elem(test + '-' + count).innerHTML = time + 'ms';
});
}
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