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/* Tests the streaming xhr without stubbing anything. Really just a test that
* we've got the interface of the in-browser XHR object pinned down */
describe('streaming xhr integration (real http)', function() {
"use strict";
var emittedEvents = [HTTP_START, STREAM_DATA, STREAM_END, FAIL_EVENT, ABORTING];
it('completes', function() {
// in practice, since we're running on an internal network and this is a small file,
// we'll probably only get one callback
var oboeBus = fakePubSub(emittedEvents)
streamingHttp(
oboeBus,
httpTransport(),
'GET',
'/testServer/static/json/smallestPossible.json',
null // this is a GET, no data to send
);
waitUntil(STREAM_END).isFiredOn(oboeBus)
})
it('can ajax in a small known file', function() {
// in practice, since we're running on an internal network and this is a small file,
// we'll probably only get one callback
var oboeBus = fakePubSub(emittedEvents)
streamingHttp(
oboeBus,
httpTransport(),
'GET',
'/testServer/static/json/smallestPossible.json',
null // this is a GET, no data to send
);
waitUntil(STREAM_END).isFiredOn(oboeBus);
runs(function(){
expect(oboeBus).toHaveGivenStreamEventsInCorrectOrder()
expect(streamedContentPassedTo(oboeBus)).toParseTo({})
});
})
it('fires HTTP_START with status and headers', function() {
var oboeBus = fakePubSub(emittedEvents)
streamingHttp(
oboeBus,
httpTransport(),
'GET',
'/testServer/echoBackHeadersAsHeaders',
null, // this is a GET, no data to send
{'specialheader':'specialValue'}
);
waitUntil(STREAM_END).isFiredOn(oboeBus);
runs(function(){
expect(oboeBus(HTTP_START).emit)
.toHaveBeenCalledWith(
200,
headerObjectContaining('specialheader', 'specialValue')
);
});
})
it('gives XHR header so server knows this is an xhr request', function() {
var oboeBus = fakePubSub(emittedEvents)
streamingHttp(
oboeBus,
httpTransport(),
'GET',
'/testServer/echoBackHeadersAsHeaders'
);
waitUntil(STREAM_END).isFiredOn(oboeBus);
runs(function(){
expect(oboeBus(HTTP_START).emit)
.toHaveBeenCalledWith(
200,
headerObjectContaining('X-Requested-With', 'XMLHttpRequest')
);
console.log(oboeBus(HTTP_START).emit.calls[0].args[1]);
});
})
it('fires HTTP_START, STREAM_DATA and STREAM_END in correct order', function() {
// in practice, since we're running on an internal network and this is a small file,
// we'll probably only get one callback
var oboeBus = fakePubSub(emittedEvents)
streamingHttp(
oboeBus,
httpTransport(),
'GET',
'/testServer/echoBackHeadersAsHeaders',
null, // this is a GET, no data to send
{'specialheader':'specialValue'}
);
waitUntil(STREAM_END).isFiredOn(oboeBus);
runs(function(){
expect(oboeBus).toHaveGivenStreamEventsInCorrectOrder()
});
})
it('fires FAIL_EVENT if url does not exist', function () {
var oboeBus = fakePubSub(emittedEvents)
streamingHttp(
oboeBus,
httpTransport(),
'GET',
'/testServer/noSuchUrl',
null
);
waitUntil(FAIL_EVENT).isFiredOn(oboeBus);
})
it('can ajax in a very large file without missing any', function() {
// in practice, since we're running on an internal network and this is a small file,
// we'll probably only get one callback
var oboeBus = fakePubSub(emittedEvents)
streamingHttp(
oboeBus,
httpTransport(),
'GET',
'/testServer/static/json/twentyThousandRecords.json',
null // this is a GET, no data to send
);
waitUntil(STREAM_END).isFiredOn(oboeBus);
runs(function(){
var parsedResult;
expect(function(){
parsedResult = JSON.parse(streamedContentPassedTo(oboeBus));
}).not.toThrow();
// as per the name, should have 20,000 records in that file:
expect(parsedResult.result.length).toEqual(20000);
});
})
it('can ajax in a streaming file without missing any', function() {
// in practice, since we're running on an internal network and this is a small file,
// we'll probably only get one callback
var oboeBus = fakePubSub(emittedEvents)
streamingHttp(
oboeBus,
httpTransport(),
'GET',
'/testServer/tenSlowNumbers?withoutMissingAny',
null // this is a GET, no data to send
);
waitUntil(STREAM_END).isFiredOn(oboeBus);
runs(function(){
// as per the name, should have ten numbers in that file:
expect(streamedContentPassedTo(oboeBus)).toParseTo([0,1,2,3,4,5,6,7,8,9]);
expect(oboeBus).toHaveGivenStreamEventsInCorrectOrder()
});
})
it('can make a post request', function() {
var payload = {'thisWill':'bePosted','andShould':'be','echoed':'back'};
// in practice, since we're running on an internal network and this is a small file,
// we'll probably only get one callback
var oboeBus = fakePubSub(emittedEvents)
streamingHttp(
oboeBus,
httpTransport(),
'POST',
'/testServer/echoBackBody',
JSON.stringify(payload)
);
waitUntil(STREAM_END).isFiredOn(oboeBus);
runs(function(){
expect(streamedContentPassedTo(oboeBus)).toParseTo(payload);
expect(oboeBus).toHaveGivenStreamEventsInCorrectOrder()
});
})
it('can make a put request', function() {
var payload = {'thisWill':'bePut','andShould':'be','echoed':'back'};
// in practice, since we're running on an internal network and this is a small file,
// we'll probably only get one callback
var oboeBus = fakePubSub(emittedEvents)
streamingHttp(
oboeBus,
httpTransport(),
'PUT',
'/testServer/echoBackBody',
JSON.stringify(payload)
);
waitUntil(STREAM_END).isFiredOn(oboeBus);
runs(function(){
expect(streamedContentPassedTo(oboeBus)).toParseTo(payload);
expect(oboeBus).toHaveGivenStreamEventsInCorrectOrder()
});
})
it('can make a patch request', function() {
var payload = {'thisWill':'bePatched','andShould':'be','echoed':'back'};
// in practice, since we're running on an internal network and this is a small file,
// we'll probably only get one callback
var oboeBus = fakePubSub(emittedEvents)
streamingHttp(
oboeBus,
httpTransport(),
'PATCH',
'/testServer/echoBackBody',
JSON.stringify(payload)
);
waitUntil(STREAM_END).isFiredOn(oboeBus);
runs(function(){
if( streamedContentPassedTo(oboeBus) == '' &&
(Platform.isInternetExplorer || Platform.isPhantom) ) {
console.warn( 'this user agent seems not to support giving content'
+ ' back for of PATCH requests.'
+ ' This happens on PhantomJS and IE < 9');
} else {
expect(streamedContentPassedTo(oboeBus)).toParseTo(payload);
expect(oboeBus).toHaveGivenStreamEventsInCorrectOrder();
}
});
})
// this test is only activated for non-IE browsers and IE 10 or newer.
// old and rubbish browsers buffer the xhr response meaning that this
// will never pass. But for good browsers it is good to have an integration
// test to confirm that we're getting it right.
if( !Platform.isInternetExplorer || Platform.isInternetExplorer >= 10 ) {
it('gives multiple callbacks when loading a streaming resource', function() {
var oboeBus = fakePubSub(emittedEvents)
streamingHttp(
oboeBus,
httpTransport(),
'GET',
'/testServer/tenSlowNumbers',
null // this is a get: no data to send
);
waitUntil(STREAM_END).isFiredOn(oboeBus);
runs(function(){
// realistically, should have had 10 or 20, but this isn't deterministic so
// 3 is enough to indicate the results didn't all arrive in one big blob.
expect(oboeBus.callCount[STREAM_DATA]).toBeGreaterThan(3)
expect(oboeBus).toHaveGivenStreamEventsInCorrectOrder()
});
})
it('gives multiple callbacks when loading a gzipped streaming resource', function() {
var oboeBus = fakePubSub(emittedEvents)
streamingHttp(
oboeBus,
httpTransport(),
'GET',
'/testServer/gzippedTwoHundredItems',
null // this is a get: no data to send
);
waitUntil(STREAM_END).isFiredOn(oboeBus);
runs(function(){
// some platforms can't help but not work here so warn but don't
// fail the test:
if( oboeBus.callCount[STREAM_DATA] == 1 &&
(Platform.isInternetExplorer || Platform.isPhantom) ) {
console.warn('This user agent seems to give gzipped responses' +
'as a single event, not progressively. This happens on ' +
'PhantomJS and IE < 9');
} else {
expect(oboeBus.callCount[STREAM_DATA]).toBeGreaterThan(1);
}
expect(oboeBus).toHaveGivenStreamEventsInCorrectOrder();
});
})
}
it('does not call back with zero-length bites', function() {
// since this is a large file, even serving locally we're going to get multiple callbacks:
var oboeBus = fakePubSub(emittedEvents)
streamingHttp(
oboeBus,
httpTransport(),
'GET',
'/testServer/static/json/oneHundredRecords.json',
null // this is a GET: no data to send
);
waitUntil(STREAM_END).isFiredOn(oboeBus)
runs(function(){
var dripsReceived = oboeBus.eventTypesEmitted[STREAM_DATA].map(function( args ){
return args[0];
});
expect(dripsReceived.length).toBeGreaterThan(0);
dripsReceived.forEach(function(drip) {
expect(drip.length).not.toEqual(0);
});
})
})
function waitUntil(event) {
return {isFiredOn: function (eventBus){
waitsFor(function(){
return !!eventBus(event).emit.calls.length;
}, 'event ' + event + ' to be fired', ASYNC_TEST_TIMEOUT);
}
}
}
function streamedContentPassedTo(eventBus){
return eventBus.eventTypesEmitted[STREAM_DATA].map(function(args){
return args[0];
}).join('');
}
beforeEach(function(){
function prettyPrintEvent(event){
switch(event) {
case HTTP_START: return 'start';
case STREAM_DATA: return 'data';
case STREAM_END: return 'end';
default: return 'unknown(' + event + ')'
}
}
this.addMatchers({
toHaveGivenStreamEventsInCorrectOrder: function(){
var eventNames = this.actual.eventNames;
this.message = function(){
return 'events not in correct order. We have: ' +
JSON.stringify(
eventNames.map(prettyPrintEvent)
)
};
return eventNames[0] === HTTP_START
&& eventNames[1] === STREAM_DATA
&& eventNames[eventNames.length-1] === STREAM_END;
},
toParseTo:function( expectedObj ){
var actual = this.actual;
var normalisedActual;
if( !actual ) {
this.message = function(){
return 'no content has been received';
}
return false;
}
try{
normalisedActual = JSON.stringify( JSON.parse(actual) );
}catch(e){
this.message = function(){
return "Expected to be able to parse the found " +
"content as json '" + actual + "' but it " +
"could not be parsed";
}
return false;
}
this.message = function(){
return "The found json parsed but did not match " + JSON.stringify(expectedObj) +
" because found " + this.actual;
}
return (normalisedActual === JSON.stringify(expectedObj));
}
});
});
function headerObjectContaining(key, val) {
// some browsers lowercase the header keys. Compare upper and lower
// case versions:
return {
jasmineMatches: function(obj){
return obj[key] == val || obj[key.toLowerCase()] == val;
}
}
}
});
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