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@johan /given.js
Created Jul 7, 2013

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Fixed function coverage in istanbul 0.1.40
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given.js
/* coffee-script example usage - at https://github.com/johan/dotjs/commits/johan
given path_re: ['^/([^/]+)/([^/]+)(/?.*)', 'user', 'repo', 'rest']
query: true
dom:
keyboard: 'css .keyboard-shortcuts'
branches: 'css+ .js-filter-branches h4 a'
dates: 'css* .commit-group-heading'
tracker: 'css? #gauges-tracker[defer]'
johan_ci: 'xpath* //li[contains(@class,"commit")][.//a[.="johan"]]'
ready: (path, query, dom) ->
...would make something like this call, as the path regexp matched, and there
were DOM matches for the two mandatory "keyboard" and "branches" selectors:
ready( { user: 'johan', repo: 'dotjs', rest: '/commits/johan' }
, {} // would contain all query args (if any were present)
, { keyboard: Node<a href="#keyboard_shortcuts_pane">
, branches: [ Node<a href="/johan/dotjs/commits/coffee">
, Node<a href="/johan/dotjs/commits/dirs">
, Node<a href="/johan/dotjs/commits/gh-pages">
, Node<a href="/johan/dotjs/commits/johan">
, Node<a href="/johan/dotjs/commits/jquery-1.8.2">
, Node<a href="/johan/dotjs/commits/master">
]
, dates: [ Node<h3 class="commit-group-heading">Oct 07, 2012</h3>
, Node<h3 class="commit-group-heading">Aug 29, 2012</h3>
, ...
]
, tracker: null
, johan_ci: [ Node<li class="commit">, ... ]
}
)
A selector returns an array of matches prefixed for "css*" and "css+" (ditto
xpath), and a single result if it is prefixed "css" or "css?":
If your script should only run on pages with a particular DOM node (or set of
nodes), use the 'css' or 'css+' (ditto xpath) forms - and your callback won't
get fired on pages that lack them. The 'css?' and 'css*' forms would run your
callback but pass null or [] respectively, on not finding such nodes. You may
recognize the semantics of x, x?, x* and x+ from regular expressions.
(see http://goo.gl/ejtMD for a more thorough discussion of something similar)
The dom property is recursively defined so you can make nested structures.
If you want a property that itself is an object full of matched things, pass
an object of sub-dom-spec:s, instead of a string selector:
given dom:
meta:
base: 'xpath? /head/base
title: 'xpath string(/head/title)'
commits: 'css* li.commit'
ready: (dom) ->
You can also deconstruct repeated templated sections of a page into subarrays
scraped as per your specs, by picking a context node for a dom spec. This is
done by passing a two-element array: a selector resolving what node/nodes you
look at and a dom spec describing how you want it/them deconstructed for you:
given dom:
meta:
[ 'xpath /head',
base: 'xpath? base
title: 'xpath string(title)'
]
commits:
[ 'css* li.commit',
avatar_url: ['css img.gravatar', 'xpath string(@src)']
author_name: 'xpath string(.//*[@class="author-name"])'
]
ready: (dom) ->
The mandatory/optional selector rules defined above behave as you'd expect as
used for context selectors too: a mandatory node or array of nodes will limit
what pages your script gets called on to those that match it, so your code is
free to assume it will always be there when it runs. An optional context node
that is not found will instead result in that part of your DOM being null, or
an empty array, in the case of a * selector.
Finally, there is the xpath! keyword, which is similar to xpath, but it also
mandates that whatever is returned is truthy. This is useful when you use the
xpath functions returning strings, numbers and of course booleans, to assert
things about the pages you want to run on, like 'xpath! count(//img) = 0', if
you never want the script to run on pages with inline images, say.
Once you called given(), you may call given.dom to do page scraping later on,
returning whatever matched your selector(s) passed. Mandatory selectors which
failed to match at this point will return undefined, optional selectors null:
given.dom('xpath //a[@id]') => undefined or <a id="...">
given.dom('xpath? //a[@id]') => null or <a id="...">
given.dom('xpath+ //a[@id]') => undefined or [<a id="...">, <a id>, ...]
given.dom('xpath* //a[@id]') => [] or [<a id="...">, <a id>, ...]
To detect a failed mandatory match, you can use given.dom(...) === given.FAIL
Github pjax hook: to re-run the script's given() block for every pjax request
to a site - add a pushstate hook as per http://goo.gl/LNSv1 -- and be sure to
make your script reentrant, so that it won't try to process the same elements
again, if they are still sitting around in the page (see ':not([augmented])')
*/
function given(opts, plugins) {
var Object_toString = Object.prototype.toString
, Array_slice = Array.prototype.slice
, FAIL = 'dom' in given ? undefined : (function() {
var tests =
{ path_re: { fn: test_regexp }
, query: { fn: test_query }
, dom: { fn: test_dom
, my: { 'css*': $c
, 'css+': one_or_more($c)
, 'css?': $C
, 'css': not_null($C)
, 'xpath*': $x
, 'xpath+': one_or_more($x)
, 'xpath?': $X
, 'xpath!': truthy($x)
, 'xpath': not_null($X)
}
}
, inject: { fn: inject }
}
, name, test, me, my, mine
;
for (name in tests) {
test = tests[name];
me = test.fn;
if ((my = test.my))
for (mine in my)
me[mine] = my[mine];
given[name] = me;
}
})()
, input = [] // args for the callback(s?) the script wants to run
, rules = Object.create(opts) // wraps opts in a pokeable inherit layer
, debug = get('debug')
, script = get('name')
, ready = get('ready')
, load = get('load')
, pushState = get('pushstate')
, pjax_event = get('pjaxevent')
, name, rule, test, result, retry, plugin
;
if (typeof ready !== 'function' &&
typeof load !== 'function' &&
typeof pushState !== 'function') {
alert('no given function');
throw new Error('given() needs at least a "ready" or "load" function!');
}
if (plugins)
for (name in plugins)
if ((rule = plugins[name]) && (test = given[name]))
for (plugin in rule)
if (!(test[plugin])) {
given._parse_dom_rule = null;
test[plugin] = rule[plugin];
}
if (pushState && history.pushState &&
(given.pushState = given.pushState || []).indexOf(opts) === -1) {
given.pushState.push(opts); // make sure we don't reregister post-navigation
initPushState(pushState, pjax_event);
}
try {
for (name in rules) {
rule = rules[name];
if (rule === undefined) continue; // was some callback or other non-rule
test = given[name];
if (!test) throw new Error('did not grok rule "'+ name +'"!');
result = test(rule);
if (result === FAIL) return false; // the page doesn't satisfy all rules
input.push(result);
}
}
catch(e) {
if (debug) console.warn("given(debug): we didn't run because " + e.message);
return false;
}
if (ready) {
ready.apply(opts, input.concat());
}
if (load) window.addEventListener('load', function() {
load.apply(opts, input.concat());
});
return input.concat(opts);
function get(x) { rules[x] = undefined; return opts[x]; }
function isArray(x) { return Object_toString.call(x) === '[object Array]'; }
function isObject(x) { return Object_toString.call(x) === '[object Object]'; }
function array(a) { return Array_slice.call(a, 0); } // array:ish => Array
function arrayify(x) { return isArray(x) ? x : [x]; } // non-array? => Array
function inject(fn, args) {
var script = document.createElement('script')
, parent = document.documentElement;
args = JSON.stringify(args || []).slice(1, -1);
script.textContent = '('+ fn +')('+ args +');';
parent.appendChild(script);
parent.removeChild(script);
}
function initPushState(callback, pjax_event) {
if (!history.pushState.armed) {
inject(function(pjax_event) {
function reportBack() {
var e = document.createEvent('Events');
e.initEvent('history.pushState', !'bubbles', !'cancelable');
document.dispatchEvent(e);
}
var pushState = history.pushState;
history.pushState = function given_pushState() {
if (pjax_event && window.$ && $.pjax)
$(document).one(pjax_event, reportBack);
else
setTimeout(reportBack, 0);
return pushState.apply(this, arguments);
};
}, [pjax_event]);
history.pushState.armed = pjax_event;
}
retry = function after_pushState() {
rules = Object.create(opts);
rules.load = rules.pushstate = undefined;
rules.ready = callback;
given(rules);
};
document.addEventListener('history.pushState', function() {
if (debug) console.log('given.pushstate', location.pathname);
retry();
}, false);
}
function test_query(spec) {
var q = unparam(this === given || this === window ? location.search : this);
if (spec === true || spec == null) return q; // decode the query for me!
throw new Error('bad query type '+ (typeof spec) +': '+ spec);
}
function unparam(query) {
var data = {};
(query || '').replace(/\+/g, '%20').split('&').forEach(function(kv) {
kv = /^\??([^=&]*)(?:=(.*))?/.exec(kv);
if (!kv) return;
var prop, val, k = kv[1], v = kv[2], e, m;
try { prop = decodeURIComponent(k); } catch (e) { prop = unescape(k); }
if ((val = v) != null)
try { val = decodeURIComponent(v); } catch (e) { val = unescape(v); }
data[prop] = val;
});
return data;
}
function test_regexp(spec) {
if (!isArray(spec)) spec = arrayify(spec);
var re = spec.shift();
if (typeof re === 'string') re = new RegExp(re);
if (!(re instanceof RegExp))
throw new Error((typeof re) +' was not a regexp: '+ re);
var ok = re.exec(this===given || this===window ? location.pathname : this);
if (ok === null) return FAIL;
if (!spec.length) return ok;
var named = {};
ok.shift(); // drop matching-whole-regexp part
while (spec.length) named[spec.shift()] = ok.shift();
return named;
}
function truthy(fn) { return function(s) {
var x = fn.apply(this, arguments); return x || FAIL;
}; }
function not_null(fn) { return function(s) {
var x = fn.apply(this, arguments); return x !== null ? x : FAIL;
}; }
function one_or_more(fn) { return function(s) {
var x = fn.apply(this, arguments); return x.length ? x : FAIL;
}; }
function $c(css) { return array(this.querySelectorAll(css)); }
function $C(css) { return this.querySelector(css); }
function $x(xpath) {
var doc = this.evaluate ? this : this.ownerDocument, next;
var got = doc.evaluate(xpath, this, null, 0, null), all = [];
switch (got.resultType) {
case 1/*XPathResult.NUMBER_TYPE*/: return got.numberValue;
case 2/*XPathResult.STRING_TYPE*/: return got.stringValue;
case 3/*XPathResult.BOOLEAN_TYPE*/: return got.booleanValue;
default: while ((next = got.iterateNext())) all.push(next); return all;
}
}
function $X(xpath) {
var got = $x.call(this, xpath);
return got instanceof Array ? got[0] || null : got;
}
function quoteRe(s) { return (s+'').replace(/([-$(-+.?[-^{|}])/g, '\\$1'); }
// DOM constraint tester / scraper facility:
// "this" is the context Node(s) - initially the document
// "spec" is either of:
// * css / xpath Selector "selector_type selector"
// * resolved for context [ context Selector, spec ]
// * an Object of spec(s) { property_name: spec, ... }
function test_dom(spec, context) {
// returns FAIL if it turned out it wasn't a mandated match at this level
// returns null if it didn't find optional matches at this level
// returns Node or an Array of nodes, or a basic type from some XPath query
function lookup(rule) {
switch (typeof rule) {
case 'string': break; // main case - rest of function
case 'object': if ('nodeType' in rule || rule.length) return rule;
// fall-through
default: throw new Error('non-String dom match rule: '+ rule);
}
if (!given._parse_dom_rule) given._parse_dom_rule = new RegExp('^(' +
Object.keys(given.dom).map(quoteRe).join('|') + ')\\s*(.*)');
var match = given._parse_dom_rule.exec(rule), type, func;
if (match) {
type = match[1];
rule = match[2];
func = test_dom[type];
}
if (!func) throw new Error('unknown dom match rule '+ type +': '+ rule);
return func.call(this, rule);
}
var results, result, i, property_name;
if (context === undefined) {
context = this === given || this === window ? document : this;
}
// validate context:
if (context === null || context === FAIL) return FAIL;
if (isArray(context)) {
for (results = [], i = 0; i < context.length; i++) {
result = test_dom.call(context[i], spec);
if (result !== FAIL)
results.push(result);
}
return results;
}
if (typeof context !== 'object' || !('nodeType' in context))
throw new Error('illegal context: '+ context);
// handle input spec format:
if (typeof spec === 'string') return lookup.call(context, spec);
if (isArray(spec)) {
context = lookup.call(context, spec[0]);
if (context === null || context === FAIL) return context;
return test_dom.call(context, spec[1]);
}
if (isObject(spec)) {
results = {};
for (property_name in spec) {
result = test_dom.call(context, spec[property_name]);
if (result === FAIL) return FAIL;
results[property_name] = result;
}
return results;
}
throw new Error("dom spec was neither a String, Object nor Array: "+ spec);
}
};
if ('module' in this) module.exports = given;
Raw
given.js.html
<!doctype html>
<html lang="en">
<head>
<title>Code coverage report for ./given.js</title>
<meta charset="utf-8">
<link rel="stylesheet" href="../prettify.css">
<style>
body, html {
margin:0; padding: 0;
}
body {
font-family: Helvetica Neue, Helvetica,Arial;
font-size: 10pt;
}
div.header, div.footer {
background: #eee;
padding: 1em;
}
div.header {
z-index: 100;
position: fixed;
top: 0;
border-bottom: 1px solid #666;
width: 100%;
}
div.footer {
border-top: 1px solid #666;
}
div.body {
margin-top: 10em;
}
div.meta {
font-size: 90%;
text-align: center;
}
h1, h2, h3 {
font-weight: normal;
}
h1 {
font-size: 12pt;
}
h2 {
font-size: 10pt;
}
pre {
font-family: Consolas, Menlo, Monaco, monospace;
margin: 0;
padding: 0;
line-height: 14px;
font-size: 14px;
-moz-tab-size: 2;
-o-tab-size: 2;
tab-size: 2;
}
div.path { font-size: 110%; }
div.path a:link, div.path a:visited { color: #000; }
table.coverage { border-collapse: collapse; margin:0; padding: 0 }
table.coverage td {
margin: 0;
padding: 0;
color: #111;
vertical-align: top;
}
table.coverage td.line-count {
width: 50px;
text-align: right;
padding-right: 5px;
}
table.coverage td.line-coverage {
color: #777 !important;
text-align: right;
border-left: 1px solid #666;
border-right: 1px solid #666;
}
table.coverage td.text {
}
table.coverage td span.cline-any {
display: inline-block;
padding: 0 5px;
width: 40px;
}
table.coverage td span.cline-neutral {
background: #eee;
}
table.coverage td span.cline-yes {
background: #b5d592;
color: #999;
}
table.coverage td span.cline-no {
background: #fc8c84;
}
.cstat-yes { color: #111; }
.cstat-no { background: #fc8c84; color: #111; }
.fstat-no { background: #ffc520; color: #111 !important; }
.cbranch-no { background: yellow !important; color: #111; }
.missing-if-branch {
display: inline-block;
margin-right: 10px;
position: relative;
padding: 0 4px;
background: black;
color: yellow;
xtext-decoration: line-through;
}
.missing-if-branch .typ {
color: inherit !important;
}
.entity, .metric { font-weight: bold; }
.metric { display: inline-block; border: 1px solid #333; padding: 0.3em; background: white; }
.metric small { font-size: 80%; font-weight: normal; color: #666; }
div.coverage-summary table { border-collapse: collapse; margin: 3em; font-size: 110%; }
div.coverage-summary td, div.coverage-summary table th { margin: 0; padding: 0.25em 1em; border-top: 1px solid #666; border-bottom: 1px solid #666; }
div.coverage-summary th { text-align: left; border: 1px solid #666; background: #eee; font-weight: normal; }
div.coverage-summary th.file { border-right: none !important; }
div.coverage-summary th.pic { border-left: none !important; text-align: right; }
div.coverage-summary th.pct { border-right: none !important; }
div.coverage-summary th.abs { border-left: none !important; text-align: right; }
div.coverage-summary td.pct { text-align: right; border-left: 1px solid #666; }
div.coverage-summary td.abs { text-align: right; font-size: 90%; color: #444; border-right: 1px solid #666; }
div.coverage-summary td.file { text-align: right; border-left: 1px solid #666; white-space: nowrap; }
div.coverage-summary td.pic { min-width: 120px !important; }
div.coverage-summary a:link { text-decoration: none; color: #000; }
div.coverage-summary a:visited { text-decoration: none; color: #333; }
div.coverage-summary a:hover { text-decoration: underline; }
div.coverage-summary tfoot td { border-top: 1px solid #666; }
div.coverage-summary .yui3-datatable-sort-indicator, div.coverage-summary .dummy-sort-indicator {
height: 10px;
width: 7px;
display: inline-block;
margin-left: 0.5em;
}
div.coverage-summary .yui3-datatable-sort-indicator {
background: url("http://yui.yahooapis.com/3.6.0/build/datatable-sort/assets/skins/sam/sort-arrow-sprite.png") no-repeat scroll 0 0 transparent;
}
div.coverage-summary .yui3-datatable-sorted .yui3-datatable-sort-indicator {
background-position: 0 -20px;
}
div.coverage-summary .yui3-datatable-sorted-desc .yui3-datatable-sort-indicator {
background-position: 0 -10px;
}
.high { background: #b5d592 !important; }
.medium { background: #ffe87c !important; }
.low { background: #fc8c84 !important; }
span.cover-fill, span.cover-empty {
display:inline-block;
border:1px solid #444;
background: white;
height: 12px;
}
span.cover-fill {
background: #ccc;
border-right: 1px solid #444;
}
span.cover-empty {
background: white;
border-left: none;
}
span.cover-full {
border-right: none !important;
}
pre.prettyprint {
border: none !important;
padding: 0 !important;
margin: 0 !important;
}
.com { color: #999 !important; }
</style>
</head>
<body>
<div class="header medium">
<h1>Code coverage report for <span class="entity">./given.js</span></h1>
<h2>
Statements: <span class="metric">73.76% <small>(149 / 202)</small></span> &nbsp;&nbsp;&nbsp;&nbsp;
Branches: <span class="metric">66.67% <small>(92 / 138)</small></span> &nbsp;&nbsp;&nbsp;&nbsp;
Functions: <span class="metric">75% <small>(24 / 32)</small></span> &nbsp;&nbsp;&nbsp;&nbsp;
Lines: <span class="metric">75% <small>(120 / 160)</small></span> &nbsp;&nbsp;&nbsp;&nbsp;
</h2>
<div class="path"><a href="../index.html">All files</a> &#187; <a href="index.html">./</a> &#187; given.js</div>
</div>
<div class="body">
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<span class="cline-any cline-neutral">&nbsp;</span></td><td class="text"><pre class="prettyprint lang-js">/* coffee-script example usage - at https://github.com/johan/dotjs/commits/johan
&nbsp;
given path_re: ['^/([^/]+)/([^/]+)(/?.*)', 'user', 'repo', 'rest']
query: true
dom:
keyboard: 'css .keyboard-shortcuts'
branches: 'css+ .js-filter-branches h4 a'
dates: 'css* .commit-group-heading'
tracker: 'css? #gauges-tracker[defer]'
johan_ci: 'xpath* //li[contains(@class,"commit")][.//a[.="johan"]]'
ready: (path, query, dom) -&gt;
&nbsp;
...would make something like this call, as the path regexp matched, and there
were DOM matches for the two mandatory "keyboard" and "branches" selectors:
&nbsp;
ready( { user: 'johan', repo: 'dotjs', rest: '/commits/johan' }
, {} // would contain all query args (if any were present)
, { keyboard: Node&lt;a href="#keyboard_shortcuts_pane"&gt;
, branches: [ Node&lt;a href="/johan/dotjs/commits/coffee"&gt;
, Node&lt;a href="/johan/dotjs/commits/dirs"&gt;
, Node&lt;a href="/johan/dotjs/commits/gh-pages"&gt;
, Node&lt;a href="/johan/dotjs/commits/johan"&gt;
, Node&lt;a href="/johan/dotjs/commits/jquery-1.8.2"&gt;
, Node&lt;a href="/johan/dotjs/commits/master"&gt;
]
, dates: [ Node&lt;h3 class="commit-group-heading"&gt;Oct 07, 2012&lt;/h3&gt;
, Node&lt;h3 class="commit-group-heading"&gt;Aug 29, 2012&lt;/h3&gt;
, ...
]
, tracker: null
, johan_ci: [ Node&lt;li class="commit"&gt;, ... ]
}
)
&nbsp;
A selector returns an array of matches prefixed for "css*" and "css+" (ditto
xpath), and a single result if it is prefixed "css" or "css?":
&nbsp;
If your script should only run on pages with a particular DOM node (or set of
nodes), use the 'css' or 'css+' (ditto xpath) forms - and your callback won't
get fired on pages that lack them. The 'css?' and 'css*' forms would run your
callback but pass null or [] respectively, on not finding such nodes. You may
recognize the semantics of x, x?, x* and x+ from regular expressions.
&nbsp;
(see http://goo.gl/ejtMD for a more thorough discussion of something similar)
&nbsp;
The dom property is recursively defined so you can make nested structures.
If you want a property that itself is an object full of matched things, pass
an object of sub-dom-spec:s, instead of a string selector:
&nbsp;
given dom:
meta:
base: 'xpath? /head/base
title: 'xpath string(/head/title)'
commits: 'css* li.commit'
ready: (dom) -&gt;
&nbsp;
You can also deconstruct repeated templated sections of a page into subarrays
scraped as per your specs, by picking a context node for a dom spec. This is
done by passing a two-element array: a selector resolving what node/nodes you
look at and a dom spec describing how you want it/them deconstructed for you:
&nbsp;
given dom:
meta:
[ 'xpath /head',
base: 'xpath? base
title: 'xpath string(title)'
]
commits:
[ 'css* li.commit',
avatar_url: ['css img.gravatar', 'xpath string(@src)']
author_name: 'xpath string(.//*[@class="author-name"])'
]
ready: (dom) -&gt;
&nbsp;
The mandatory/optional selector rules defined above behave as you'd expect as
used for context selectors too: a mandatory node or array of nodes will limit
what pages your script gets called on to those that match it, so your code is
free to assume it will always be there when it runs. An optional context node
that is not found will instead result in that part of your DOM being null, or
an empty array, in the case of a * selector.
&nbsp;
Finally, there is the xpath! keyword, which is similar to xpath, but it also
mandates that whatever is returned is truthy. This is useful when you use the
xpath functions returning strings, numbers and of course booleans, to assert
things about the pages you want to run on, like 'xpath! count(//img) = 0', if
you never want the script to run on pages with inline images, say.
&nbsp;
Once you called given(), you may call given.dom to do page scraping later on,
returning whatever matched your selector(s) passed. Mandatory selectors which
failed to match at this point will return undefined, optional selectors null:
&nbsp;
given.dom('xpath //a[@id]') =&gt; undefined or &lt;a id="..."&gt;
given.dom('xpath? //a[@id]') =&gt; null or &lt;a id="..."&gt;
given.dom('xpath+ //a[@id]') =&gt; undefined or [&lt;a id="..."&gt;, &lt;a id&gt;, ...]
given.dom('xpath* //a[@id]') =&gt; [] or [&lt;a id="..."&gt;, &lt;a id&gt;, ...]
&nbsp;
To detect a failed mandatory match, you can use given.dom(...) === given.FAIL
&nbsp;
Github pjax hook: to re-run the script's given() block for every pjax request
to a site - add a pushstate hook as per http://goo.gl/LNSv1 -- and be sure to
make your script reentrant, so that it won't try to process the same elements
again, if they are still sitting around in the page (see ':not([augmented])')
&nbsp;
*/
&nbsp;
function given(opts, plugins) {
var Object_toString = Object.prototype.toString
, Array_slice = Array.prototype.slice
, FAIL = 'dom' in given ? undefined : (function() {
var tests =
{ path_re: { fn: test_regexp }
, query: { fn: test_query }
, dom: { fn: test_dom
, my: { 'css*': $c
, 'css+': one_or_more($c)
, 'css?': $C
, 'css': not_null($C)
, 'xpath*': $x
, 'xpath+': one_or_more($x)
, 'xpath?': $X
, 'xpath!': truthy($x)
, 'xpath': not_null($X)
}
}
, inject: { fn: inject }
}
, name, test, me, my, mine
;
&nbsp;
for (name in tests) {
test = tests[name];
me = test.fn;
if ((my = test.my))
for (mine in my)
me[mine] = my[mine];
given[name] = me;
}
})()
&nbsp;
, input = [] // args for the callback(s?) the script wants to run
, rules = Object.create(opts) // wraps opts in a pokeable inherit layer
, debug = get('debug')
, script = get('name')
, ready = get('ready')
, load = get('load')
, pushState = get('pushstate')
, pjax_event = get('pjaxevent')
, name, rule, test, result, retry, plugin
;
&nbsp;
<span class="missing-if-branch" title="if path not taken"" >I</span>if (typeof ready !== 'function' &amp;&amp;
<span class="branch-1 cbranch-no" title="branch not covered" > typeof load !== 'function' </span>&amp;&amp;
<span class="branch-2 cbranch-no" title="branch not covered" > typeof pushState !== 'function')</span> {
<span class="cstat-no" title="statement not covered" > alert('no given function');</span>
<span class="cstat-no" title="statement not covered" > throw new Error('given() needs at least a "ready" or "load" function!');</span>
}
&nbsp;
if (plugins)
for (name in plugins)
<span class="missing-if-branch" title="else path not taken"" >E</span>if ((rule = plugins[name]) &amp;&amp; (test = given[name]))
for (plugin in rule)
<span class="missing-if-branch" title="else path not taken"" >E</span>if (!(test[plugin])) {
given._parse_dom_rule = null;
test[plugin] = rule[plugin];
}
&nbsp;
<span class="missing-if-branch" title="if path not taken"" >I</span>if (pushState &amp;&amp; <span class="branch-1 cbranch-no" title="branch not covered" >history.pushState </span>&amp;&amp;
<span class="branch-2 cbranch-no" title="branch not covered" > (given.pushState = given.pushState || []).indexOf(opts) === -1)</span> {
<span class="cstat-no" title="statement not covered" > given.pushState.push(opts); </span>// make sure we don't reregister post-navigation
<span class="cstat-no" title="statement not covered" > initPushState(pushState, pjax_event);</span>
}
&nbsp;
try {
for (name in rules) {
rule = rules[name];
if (rule === undefined) continue; // was some callback or other non-rule
test = given[name];
<span class="missing-if-branch" title="if path not taken"" >I</span>if (!test) <span class="cstat-no" title="statement not covered" >throw new Error('did not grok rule "'+ name +'"!');</span>
result = test(rule);
<span class="missing-if-branch" title="if path not taken"" >I</span>if (result === FAIL) <span class="cstat-no" title="statement not covered" >return false; </span>// the page doesn't satisfy all rules
input.push(result);
}
}
catch(e) {
<span class="cstat-no" title="statement not covered" > if (debug) <span class="cstat-no" title="statement not covered" >console.warn("given(debug): we didn't run because " + e.message);</span></span>
<span class="cstat-no" title="statement not covered" > return false;</span>
}
&nbsp;
<span class="missing-if-branch" title="else path not taken"" >E</span>if (ready) {
ready.apply(opts, input.concat());
}
<span class="missing-if-branch" title="if path not taken"" >I</span>if (load) <span class="cstat-no" title="statement not covered" >window.addEventListener('load', <span class="fstat-no" title="function not covered" >function() {</span></span>
<span class="cstat-no" title="statement not covered" > load.apply(opts, input.concat());</span>
});
return input.concat(opts);
&nbsp;
function get(x) { rules[x] = undefined; return opts[x]; }
function isArray(x) { return Object_toString.call(x) === '[object Array]'; }
function isObject(x) { return Object_toString.call(x) === '[object Object]'; }
function array(a) { return Array_slice.call(a, 0); } // array:ish =&gt; Array
function arrayify(x) { return isArray(x) ? <span class="branch-0 cbranch-no" title="branch not covered" >x </span>: [x]; } // non-array? =&gt; Array
<span class="fstat-no" title="function not covered" > function inject(fn, args) {</span>
<span class="cstat-no" title="statement not covered" > var script = document.createElement('script')</span>
, parent = document.documentElement;
<span class="cstat-no" title="statement not covered" > args = JSON.stringify(args || []).slice(1, -1);</span>
<span class="cstat-no" title="statement not covered" > script.textContent = '('+ fn +')('+ args +');';</span>
<span class="cstat-no" title="statement not covered" > parent.appendChild(script);</span>
<span class="cstat-no" title="statement not covered" > parent.removeChild(script);</span>
}
&nbsp;
<span class="fstat-no" title="function not covered" > function initPushState(callback, pjax_event) {</span>
<span class="cstat-no" title="statement not covered" > if (!history.pushState.armed) {</span>
<span class="cstat-no" title="statement not covered" > inject(<span class="fstat-no" title="function not covered" >function(pjax_event) {</span></span>
<span class="fstat-no" title="function not covered" > function reportBack() {</span>
<span class="cstat-no" title="statement not covered" > var e = document.createEvent('Events');</span>
<span class="cstat-no" title="statement not covered" > e.initEvent('history.pushState', !'bubbles', !'cancelable');</span>
<span class="cstat-no" title="statement not covered" > document.dispatchEvent(e);</span>
}
<span class="cstat-no" title="statement not covered" > var pushState = history.pushState;</span>
<span class="cstat-no" title="statement not covered" > history.pushState = <span class="fstat-no" title="function not covered" >function given_pushState() {</span></span>
<span class="cstat-no" title="statement not covered" > if (pjax_event &amp;&amp; window.$ &amp;&amp; $.pjax)</span>
<span class="cstat-no" title="statement not covered" > $(document).one(pjax_event, reportBack);</span>
else
<span class="cstat-no" title="statement not covered" > setTimeout(reportBack, 0);</span>
<span class="cstat-no" title="statement not covered" > return pushState.apply(this, arguments);</span>
};
}, [pjax_event]);
<span class="cstat-no" title="statement not covered" > history.pushState.armed = pjax_event;</span>
}
&nbsp;
<span class="cstat-no" title="statement not covered" > retry = <span class="fstat-no" title="function not covered" >function after_pushState() {</span></span>
<span class="cstat-no" title="statement not covered" > rules = Object.create(opts);</span>
<span class="cstat-no" title="statement not covered" > rules.load = rules.pushstate = undefined;</span>
<span class="cstat-no" title="statement not covered" > rules.ready = callback;</span>
<span class="cstat-no" title="statement not covered" > given(rules);</span>
};
&nbsp;
<span class="cstat-no" title="statement not covered" > document.addEventListener('history.pushState', <span class="fstat-no" title="function not covered" >function() {</span></span>
<span class="cstat-no" title="statement not covered" > if (debug) <span class="cstat-no" title="statement not covered" >console.log('given.pushstate', location.pathname);</span></span>
<span class="cstat-no" title="statement not covered" > retry();</span>
}, false);
}
&nbsp;
function test_query(spec) {
var q = unparam(this === given || this === window ? location.search : <span class="branch-1 cbranch-no" title="branch not covered" >this)</span>;
<span class="missing-if-branch" title="else path not taken"" >E</span>if (spec === true || spec == null) return q; // decode the query for me!
<span class="cstat-no" title="statement not covered" > throw new Error('bad query type '+ (typeof spec) +': '+ spec);</span>
}
&nbsp;
function unparam(query) {
var data = {};
(query || '').replace(/\+/g, '%20').split('&amp;').forEach(function(kv) {
kv = /^\??([^=&amp;]*)(?:=(.*))?/.exec(kv);
<span class="missing-if-branch" title="if path not taken"" >I</span>if (!kv) <span class="cstat-no" title="statement not covered" >return;</span>
var prop, val, k = kv[1], v = kv[2], e, m;
try { prop = decodeURIComponent(k); } catch (e) { <span class="cstat-no" title="statement not covered" >prop = unescape(k); </span>}
if ((val = v) != null)
try { val = decodeURIComponent(v); } catch (e) { <span class="cstat-no" title="statement not covered" >val = unescape(v); </span>}
data[prop] = val;
});
return data;
}
&nbsp;
function test_regexp(spec) {
<span class="missing-if-branch" title="else path not taken"" >E</span>if (!isArray(spec)) spec = arrayify(spec);
var re = spec.shift();
<span class="missing-if-branch" title="else path not taken"" >E</span>if (typeof re === 'string') re = new RegExp(re);
<span class="missing-if-branch" title="if path not taken"" >I</span>if (!(re instanceof RegExp))
<span class="cstat-no" title="statement not covered" > throw new Error((typeof re) +' was not a regexp: '+ re);</span>
&nbsp;
var ok = re.exec(this===given || this===window ? location.pathname : <span class="branch-1 cbranch-no" title="branch not covered" >this)</span>;
<span class="missing-if-branch" title="if path not taken"" >I</span>if (ok === null) <span class="cstat-no" title="statement not covered" >return FAIL;</span>
<span class="missing-if-branch" title="else path not taken"" >E</span>if (!spec.length) return ok;
<span class="cstat-no" title="statement not covered" > var named = {};</span>
<span class="cstat-no" title="statement not covered" > ok.shift(); </span>// drop matching-whole-regexp part
<span class="cstat-no" title="statement not covered" > while (spec.length) <span class="cstat-no" title="statement not covered" >named[spec.shift()] = ok.shift();</span></span>
<span class="cstat-no" title="statement not covered" > return named;</span>
}
&nbsp;
function truthy(fn) { return function(s) {
var x = fn.apply(this, arguments); return x || FAIL;
}; }
&nbsp;
function not_null(fn) { return function(s) {
var x = fn.apply(this, arguments); return x !== null ? x : FAIL;
}; }
&nbsp;
function one_or_more(fn) { return function(s) {
var x = fn.apply(this, arguments); return x.length ? x : FAIL;
}; }
&nbsp;
function $c(css) { return array(this.querySelectorAll(css)); }
function $C(css) { return this.querySelector(css); }
&nbsp;
function $x(xpath) {
var doc = this.evaluate ? this : this.ownerDocument, next;
var got = doc.evaluate(xpath, this, null, 0, null), all = [];
switch (got.resultType) {
case 1/*XPathResult.NUMBER_TYPE*/: return got.numberValue;
case 2/*XPathResult.STRING_TYPE*/: return got.stringValue;
case 3/*XPathResult.BOOLEAN_TYPE*/: return got.booleanValue;
default: while ((next = got.iterateNext())) all.push(next); return all;
}
}
function $X(xpath) {
var got = $x.call(this, xpath);
return got instanceof Array ? got[0] || null : got;
}
&nbsp;
function quoteRe(s) { return (s+'').replace(/([-$(-+.?[-^{|}])/g, '\\$1'); }
&nbsp;
// DOM constraint tester / scraper facility:
// "this" is the context Node(s) - initially the document
// "spec" is either of:
// * css / xpath Selector "selector_type selector"
// * resolved for context [ context Selector, spec ]
// * an Object of spec(s) { property_name: spec, ... }
function test_dom(spec, context) {
// returns FAIL if it turned out it wasn't a mandated match at this level
// returns null if it didn't find optional matches at this level
// returns Node or an Array of nodes, or a basic type from some XPath query
function lookup(rule) {
switch (typeof rule) {
case 'string': break; // main case - rest of function
case 'object': <span class="missing-if-branch" title="else path not taken"" >E</span>if ('nodeType' in rule || rule.length) return rule;
// fall-through
<span class="branch-2 cbranch-no" title="branch not covered" > default: <span class="cstat-no" title="statement not covered" >throw new Error('non-String dom match rule: '+ rule);</span></span>
}
if (!given._parse_dom_rule) given._parse_dom_rule = new RegExp('^(' +
Object.keys(given.dom).map(quoteRe).join('|') + ')\\s*(.*)');
var match = given._parse_dom_rule.exec(rule), type, func;
<span class="missing-if-branch" title="else path not taken"" >E</span>if (match) {
type = match[1];
rule = match[2];
func = test_dom[type];
}
<span class="missing-if-branch" title="if path not taken"" >I</span>if (!func) <span class="cstat-no" title="statement not covered" >throw new Error('unknown dom match rule '+ type +': '+ rule);</span>
return func.call(this, rule);
}
&nbsp;
var results, result, i, property_name;
<span class="missing-if-branch" title="else path not taken"" >E</span>if (context === undefined) {
context = this === given || this === window ? document : this;
}
&nbsp;
// validate context:
<span class="missing-if-branch" title="if path not taken"" >I</span>if (context === null || context === FAIL) <span class="cstat-no" title="statement not covered" >return FAIL;</span>
if (isArray(context)) {
for (results = [], i = 0; i &lt; context.length; i++) {
result = test_dom.call(context[i], spec);
<span class="missing-if-branch" title="else path not taken"" >E</span>if (result !== FAIL)
results.push(result);
}
return results;
}
<span class="missing-if-branch" title="if path not taken"" >I</span>if (typeof context !== 'object' || !('nodeType' in context))
<span class="cstat-no" title="statement not covered" > throw new Error('illegal context: '+ context);</span>
&nbsp;
// handle input spec format:
if (typeof spec === 'string') return lookup.call(context, spec);
if (isArray(spec)) {
context = lookup.call(context, spec[0]);
if (context === null || context === FAIL) return context;
return test_dom.call(context, spec[1]);
}
if (isObject(spec)) {
results = {};
for (property_name in spec) {
result = test_dom.call(context, spec[property_name]);
if (result === FAIL) return FAIL;
results[property_name] = result;
}
return results;
}
&nbsp;
throw new Error("dom spec was neither a String, Object nor Array: "+ spec);
}
};
&nbsp;
<span class="missing-if-branch" title="if path not taken"" >I</span>if ('module' in this) <span class="cstat-no" title="statement not covered" >module.exports = given;</span>
&nbsp;</pre></td></tr>
</table></pre>
</div>
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<div class="header medium">
<h1>Code coverage report for <span class="entity">./</span></h1>
<h2>
Statements: <span class="metric">73.76% <small>(149 / 202)</small></span> &nbsp;&nbsp;&nbsp;&nbsp;
Branches: <span class="metric">66.67% <small>(92 / 138)</small></span> &nbsp;&nbsp;&nbsp;&nbsp;
Functions: <span class="metric">75% <small>(24 / 32)</small></span> &nbsp;&nbsp;&nbsp;&nbsp;
Lines: <span class="metric">75% <small>(120 / 160)</small></span> &nbsp;&nbsp;&nbsp;&nbsp;
</h2>
<div class="path"><a href="../index.html">All files</a> &#187; ./</div>
</div>
<div class="body">
<div class="coverage-summary">
<table>
<thead>
<tr>
<th data-col="file" data-fmt="html" data-html="true" class="file">File</th>
<th data-col="pic" data-type="number" data-fmt="html" data-html="true" class="pic"></th>
<th data-col="statements" data-type="number" data-fmt="pct" class="pct">Statements</th>
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