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( function() {
// Store the old counts so that we only assert on tests that have actually leaked,
// instead of asserting every time a test has leaked sometime in the past
var oldCacheLength = 0,
oldActive = 0,
expectedDataKeys = {},
splice = [].splice,
ajaxSettings = jQuery.ajaxSettings;
/**
* QUnit configuration
*/
// Max time for stop() and asyncTest() until it aborts test
// and start()'s the next test.
QUnit.config.testTimeout = 12e4; // 2 minutes
// Enforce an "expect" argument or expect() call in all test bodies.
QUnit.config.requireExpects = true;
/**
* @param {jQuery|HTMLElement|Object|Array} elems Target (or array of targets) for jQuery.data.
* @param {string} key
*/
QUnit.assert.expectJqData = function( env, elems, key ) {
var i, elem, expando;
// As of jQuery 2.0, there will be no "cache"-data is
// stored and managed completely below the API surface
if ( jQuery.cache ) {
env.checkJqData = true;
if ( elems.jquery && elems.toArray ) {
elems = elems.toArray();
}
if ( !supportjQuery.isArray( elems ) ) {
elems = [ elems ];
}
for ( i = 0; i < elems.length; i++ ) {
elem = elems[ i ];
// jQuery.data only stores data for nodes in jQuery.cache,
// for other data targets the data is stored in the object itself,
// in that case we can't test that target for memory leaks.
// But we don't have to since in that case the data will/must will
// be available as long as the object is not garbage collected by
// the js engine, and when it is, the data will be removed with it.
if ( !elem.nodeType ) {
// Fixes false positives for dataTests(window), dataTests({}).
continue;
}
expando = elem[ jQuery.expando ];
if ( expando === undefined ) {
// In this case the element exists fine, but
// jQuery.data (or internal data) was never (in)directly
// called.
// Since this method was called it means some data was
// expected to be found, but since there is nothing, fail early
// (instead of in teardown).
this.notStrictEqual(
expando,
undefined,
"Target for expectJqData must have an expando, " +
"for else there can be no data to expect."
);
} else {
if ( expectedDataKeys[ expando ] ) {
expectedDataKeys[ expando ].push( key );
} else {
expectedDataKeys[ expando ] = [ key ];
}
}
}
}
};
QUnit.config.urlConfig.push( {
id: "jqdata",
label: "Always check jQuery.data",
tooltip: "Trigger QUnit.expectJqData detection for all tests " +
"instead of just the ones that call it"
} );
/**
* Ensures that tests have cleaned up properly after themselves. Should be passed as the
* teardown function on all modules' lifecycle object.
*/
window.moduleTeardown = function( assert ) {
var i, expectedKeys, actualKeys,
cacheLength = 0;
// Only look for jQuery data problems if this test actually
// provided some information to compare against.
if ( QUnit.urlParams.jqdata || this.checkJqData ) {
for ( i in jQuery.cache ) {
expectedKeys = expectedDataKeys[ i ];
actualKeys = jQuery.cache[ i ] ? Object.keys( jQuery.cache[ i ] ) : jQuery.cache[ i ];
if ( !QUnit.equiv( expectedKeys, actualKeys ) ) {
assert.deepEqual( actualKeys, expectedKeys, "Expected keys exist in jQuery.cache" );
}
delete jQuery.cache[ i ];
delete expectedDataKeys[ i ];
}
// In case it was removed from cache before (or never there in the first place)
for ( i in expectedDataKeys ) {
assert.deepEqual(
expectedDataKeys[ i ],
undefined,
"No unexpected keys were left in jQuery.cache (#" + i + ")"
);
delete expectedDataKeys[ i ];
}
}
// Reset data register
expectedDataKeys = {};
// Check for (and clean up, if possible) incomplete animations/requests/etc.
if ( jQuery.timers && jQuery.timers.length !== 0 ) {
assert.equal( jQuery.timers.length, 0, "No timers are still running" );
splice.call( jQuery.timers, 0, jQuery.timers.length );
jQuery.fx.stop();
}
if ( jQuery.active !== undefined && jQuery.active !== oldActive ) {
assert.equal( jQuery.active, oldActive, "No AJAX requests are still active" );
if ( ajaxTest.abort ) {
ajaxTest.abort( "active requests" );
}
oldActive = jQuery.active;
}
Globals.cleanup();
for ( i in jQuery.cache ) {
++cacheLength;
}
// Because QUnit doesn't have a mechanism for retrieving
// the number of expected assertions for a test,
// if we unconditionally assert any of these,
// the test will fail with too many assertions :|
if ( cacheLength !== oldCacheLength ) {
assert.equal( cacheLength, oldCacheLength, "No unit tests leak memory in jQuery.cache" );
oldCacheLength = cacheLength;
}
};
QUnit.done( function() {
// Remove our own fixtures outside #qunit-fixture
supportjQuery( "#qunit ~ *" ).remove();
} );
QUnit.testDone( function() {
// Ensure jQuery events and data on the fixture are properly removed
jQuery( "#qunit-fixture" ).empty();
// ...even if the jQuery under test has a broken .empty()
supportjQuery( "#qunit-fixture" ).empty();
// Reset internal jQuery state
jQuery.event.global = {};
if ( ajaxSettings ) {
jQuery.ajaxSettings = jQuery.extend( true, {}, ajaxSettings );
} else {
delete jQuery.ajaxSettings;
}
// Cleanup globals
Globals.cleanup();
} );
// Register globals for cleanup and the cleanup code itself
window.Globals = ( function() {
var globals = {};
return {
register: function( name ) {
window[ name ] = globals[ name ] = true;
},
cleanup: function() {
var name;
for ( name in globals ) {
delete window[ name ];
}
globals = {};
}
};
} )();
} )();
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