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q.test.html
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q.test.html
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<!DOCTYPE html>
<html>
<head>
<title>Q Demo</title>
<meta name="description" content="Demonstration of Q">
<meta name="keywords" content="JavaScript,Q">
<meta name="author" content="J Feingold">
<meta charset="UTF-8">
<style>
.red {
background-color: darkred;
color: white;
font-weight: bold;
}
.green {
background-color: darkgreen;
color: white;
font-weight: bold;
}
.clear {
background-color: inherit;
color: white;
font-weight: bold;
}
.group-header {
font-weight: bold;
}
body {
background-color: black;
color: white;
font-family: 'courier new';
}
</style>
</head>
<body>
<h3>Q Demo</h3>
<p>The test results show the successive processing of values.<br>On each step, the text indicates 'value-produced[: value-received]'.<br>The color indicates whether that step returned or threw the value it produced.</p>
<input data-id="run-all" type="button" value="all">
<table>
<thead>
<tr>
<td> </td>
<td><span class="group-header">test </span></td>
<td><span class="group-header">result </span></td>
</tr>
</thead>
<tbody id="results"></tbody>
</table>
<div style="display: none;">
<!-- we only want the row but it'll get mangled if it's not in a valid position. -->
<table>
<tr data-id="row-template">
<td><input data-id="go" type="button" value="go"></td>
<td data-id="test-num"></td>
<td data-id="results"></td>
</tr>
</table>
</div>
<script src="q-0.9.6.js"></script>
<script src="jquery-1.9.1.js"></script>
<script src="underscore-1.4.4.js"></script>
<script>
/*
* Demonstration of Q behavior.
* jfeingold
*/
'use strict';
$(function () {
var testNum = 0;
var results = $('#results');
if (1 !== results.length) {
throw "Can't find results area. derp.";
}
var rowTemplate = $('[data-id="row-template"]');
if (1 !== rowTemplate.length) {
throw "Can't find row template. derp.";
}
$('[data-id="run-all"]').click(function () {
$('[data-id="go"]').click();
});
function addGroup(name) {
results.append('<tr><td> </td><td colspan="2"><span class="group-header">' + name + '</span></td></tr>');
}
/**
* Defines a new test and adds it to the table.
* @param name
* @param test
*/
function addTest(test) {
var row = rowTemplate.clone();
var res = row.find('[data-id="results"]');
function addResult(status, message) {
function makeResultClass(status) {
if (null === status) {
return 'clear';
} else if (status) {
return 'green';
} else {
return 'red';
}
}
res.append('<span><span class="' + makeResultClass(status) + '"> ' + message + ' </span> </span>');
}
++ testNum;
row.find('[data-id="test-num"]').text('' + testNum);
row.find('[data-id="test-name"]').text('' + name);
row.find('[data-id="go"]').click(function () {
res.empty();
/**
* Returns a function that returns or throws a value.
* This takes the place of the initial promise.
* @param mode True for return, false for throw.
* @returns {Function}
*/
function start(mode) {
return function () {
var value = 'start'
addResult(mode, value);
if (mode) { return value; } else { throw value; }
};
}
/**
* Implements a handler (then, catch, etc.)
* @param mode Whether to throw or return who.
* @param who Supply some name that identifies what this handler is. This is the value produced by this handler.
* @returns {Function} A function that uses the mode to process the value.
*/
function chain(mode, who) {
return function (value) {
addResult(mode, who + ': ' + value);
if (mode) { return who; } else { throw who; }
};
}
try {
test({start: start, chain: chain});
}
catch (e) {
addResult(null, 'UNCAUGHT: ' + e); // just in case
}
});
results.append(row);
}
addGroup('[then] [catch]');
addTest(function (op) {
var q = Q.fcall(op.start(true));
q.then(op.chain(true, 'then'));
q.catch(op.chain(true, 'catch'));
});
addTest(function (op) {
var q = Q.fcall(op.start(true));
q.then(op.chain(false, 'then'));
q.catch(op.chain(true, 'catch'));
});
addTest(function (op) {
var q = Q.fcall(op.start(false));
q.then(op.chain(true, 'then'));
q.catch(op.chain(true, 'catch'));
});
addTest(function (op) {
var q = Q.fcall(op.start(false));
q.then(op.chain(true, 'then'));
q.catch(op.chain(false, 'catch'));
});
addGroup('[then] [then] [catch]');
addTest(function (op) {
var q = Q.fcall(op.start(true));
q.then(op.chain(true, 'then-1'));
q.then(op.chain(true, 'then-2'));
q.catch(op.chain(true, 'catch'));
});
addTest(function (op) {
var q = Q.fcall(op.start(true));
q.then(op.chain(false, 'then-1'));
q.then(op.chain(true, 'then-2'));
q.catch(op.chain(true, 'catch'));
});
addTest(function (op) {
var q = Q.fcall(op.start(false));
q.then(op.chain(true, 'then-1'));
q.then(op.chain(false, 'then-2'));
q.catch(op.chain(true, 'catch'));
});
addTest(function (op) {
var q = Q.fcall(op.start(false));
q.then(op.chain(true, 'then-1'));
q.then(op.chain(false, 'then-2'));
q.catch(op.chain(false, 'catch'));
});
addGroup('[then] [catch] [catch]');
addTest(function (op) {
var q = Q.fcall(op.start(false));
q.then(op.chain(true, 'then'));
q.catch(op.chain(true, 'catch-1'));
q.catch(op.chain(true, 'catch-2'));
});
addTest(function (op) {
var q = Q.fcall(op.start(false));
q.then(op.chain(true, 'then'));
q.catch(op.chain(false, 'catch-1'));
q.catch(op.chain(false, 'catch-2'));
});
addGroup('[then] [catch, catch]');
addTest(function (op) {
var q = Q.fcall(op.start(false));
q.then(op.chain(true, 'then'));
q.catch(op.chain(false, 'catch-1')).catch(op.chain(false, 'catch-2'));
});
addGroup('[then, catch, then, catch]');
addTest(function (op) {
Q.fcall(op.start(false))
.then(op.chain(true, 'then-1'))
.catch(op.chain(false, 'catch-1'))
.then(op.chain(true, 'then-2'))
.catch(op.chain(false, 'catch-2'));
});
addTest(function (op) {
Q.fcall(op.start(false))
.then(op.chain(true, 'then-1'))
.catch(op.chain(true, 'catch-1'))
.then(op.chain(true, 'then-2'))
.catch(op.chain(false, 'catch-2'));
});
addGroup('[then, catch]');
addTest(function (op) {
Q.fcall(op.start(true)).
then(op.chain(true, 'then')).
catch(op.chain(true, 'catch'));
});
addTest(function (op) {
Q.fcall(op.start(false)).
then(op.chain(true, 'then')).
catch(op.chain(true, 'catch'));
});
addTest(function (op) {
Q.fcall(op.start(true)).
then(op.chain(false, 'then')).
catch(op.chain(true, 'catch'));
});
addTest(function (op) {
Q.fcall(op.start(false)).
then(op.chain(false, 'then')).
catch(op.chain(false, 'catch'));
});
addGroup('[then, then, catch]');
addTest(function (op) {
Q.fcall(op.start(true)).
then(op.chain(true, 'then-1')).
then(op.chain(true, 'then-2')).
catch(op.chain(true, 'catch'));
});
addTest(function (op) {
Q.fcall(op.start(false)).
then(op.chain(true, 'then-1')).
then(op.chain(true, 'then-2')).
catch(op.chain(true, 'catch'));
});
addTest(function (op) {
Q.fcall(op.start(true)).
then(op.chain(false, 'then-1')).
then(op.chain(true, 'then-2')).
catch(op.chain(true, 'catch'));
});
addTest(function (op) {
Q.fcall(op.start(true)).
then(op.chain(true, 'then-1')).
then(op.chain(false, 'then-2')).
catch(op.chain(true, 'catch'));
});
addGroup('Done means done?')
addTest(function (op) {
var q = Q.fcall(op.start(true));
q.then(op.chain(true, 'then'));
q.done();
q.catch(op.chain(true, 'catch'));
});
addTest(function (op) {
var q = Q.fcall(op.start(true));
q.done();
q.then(op.chain(true, 'then'));
q.catch(op.chain(true, 'catch'));
});
addTest(function (op) {
var q = Q.fcall(op.start(false));
q.then(op.chain(true, 'then'));
q.done();
q.catch(op.chain(true, 'catch'));
});
addTest(function (op) {
var q = Q.fcall(op.start(false));
q.done();
q.then(op.chain(true, 'then'));
q.catch(op.chain(true, 'catch'));
});
addTest(function(op) {
// save the promise
var q = Q.fcall(op.start(true));
var c1 = q.then(op.chain(true, 'then-1'));
// close the handlers
q.done();
c1.done();
// add more handlers.
q.then(op.chain(false, 'then-2')).
catch(op.chain(true, 'catch'));
});
addGroup('[then, then, catch], [then, catch]')
addTest(function (op) {
var q = Q.fcall(op.start(true))
q.
then(op.chain(true, 'then-1-1')).
then(op.chain(true, 'then-1-2')).
catch(op.chain(true, 'catch-1'));
q.
then(op.chain(true, 'then-2-1')).
catch(op.chain(true, 'catch-2'));
});
addTest(function (op) {
var q = Q.fcall(op.start(true))
q.
then(op.chain(true, 'then-1-1')).
then(op.chain(false, 'then-1-2')).
catch(op.chain(true, 'catch-1'));
q.
then(op.chain(true, 'then-2-1')).
catch(op.chain(true, 'catch-2'));
});
addTest(function (op) {
var q = Q.fcall(op.start(false))
q.
then(op.chain(true, 'then-1-1')).
then(op.chain(false, 'then-1-2')).
catch(op.chain(true, 'catch-1'));
q.
then(op.chain(false, 'then-2-1')).
catch(op.chain(true, 'catch-2'));
});
addTest(function (op) {
var q = Q.fcall(op.start(false))
q.
then(op.chain(true, 'then-1-1')).
then(op.chain(false, 'then-1-2')).
catch(op.chain(true, 'catch-1'));
q.
then(op.chain(true, 'then-2-1')).
catch(op.chain(true, 'catch-2'));
});
});
</script>
</body>
</html>