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describe('$xhr.cache', function() {
var scope, $browser, $browserXhr, cache, log;
beforeEach(function(){
scope = angular.scope();
$browser = scope.$service('$browser');
$browserXhr = $browser.xhr;
cache = scope.$service('$xhr.cache');
log = '';
});
afterEach(function(){
dealoc(scope);
});
function callback(code, response) {
expect(code).toEqual(200);
log = log + toJson(response) + ';';
}
it('should cache requests', function(){
$browserXhr.expectGET('/url').respond('first');
cache('GET', '/url', null, callback);
$browserXhr.flush();
$browserXhr.expectGET('/url').respond('ERROR');
cache('GET', '/url', null, callback);
$browser.defer.flush();
expect(log).toEqual('"first";"first";');
cache('GET', '/url', null, callback, false);
$browser.defer.flush();
expect(log).toEqual('"first";"first";"first";');
});
it('should first return cache request, then return server request', function(){
$browserXhr.expectGET('/url').respond('first');
cache('GET', '/url', null, callback, true);
$browserXhr.flush();
$browserXhr.expectGET('/url').respond('ERROR');
cache('GET', '/url', null, callback, true);
$browser.defer.flush();
expect(log).toEqual('"first";"first";');
$browserXhr.flush();
expect(log).toEqual('"first";"first";"ERROR";');
});
it('should serve requests from cache', function(){
cache.data.url = {value:'123'};
cache('GET', 'url', null, callback);
$browser.defer.flush();
expect(log).toEqual('"123";');
cache('GET', 'url', null, callback, false);
$browser.defer.flush();
expect(log).toEqual('"123";"123";');
});
it('should keep track of in flight requests and request only once', function(){
scope.$service('$xhr.bulk').urls['/bulk'] = {
match:function(url){
return url == '/url';
}
};
$browserXhr.expectPOST('/bulk', {
requests:[{method:'GET', url:'/url', data: null}]
}).respond([
{status:200, response:'123'}
]);
cache('GET', '/url', null, callback);
cache('GET', '/url', null, callback);
cache.delegate.flush();
$browserXhr.flush();
expect(log).toEqual('"123";"123";');
});
it('should clear cache on non GET', function(){
$browserXhr.expectPOST('abc', {}).respond({});
cache.data.url = {value:123};
cache('POST', 'abc', {});
expect(cache.data.url).toBeUndefined();
});
it('should call callback asynchronously for both cache hit and cache miss', function() {
$browserXhr.expectGET('/url').respond('+');
cache('GET', '/url', null, callback);
expect(log).toEqual(''); //callback hasn't executed
$browserXhr.flush();
expect(log).toEqual('"+";'); //callback has executed
cache('GET', '/url', null, callback);
expect(log).toEqual('"+";'); //callback hasn't executed
$browser.defer.flush();
expect(log).toEqual('"+";"+";'); //callback has executed
});
it('should call eval after callbacks for both cache hit and cache miss execute', function() {
var eval = this.spyOn(scope, '$eval').andCallThrough();
$browserXhr.expectGET('/url').respond('+');
cache('GET', '/url', null, callback);
expect(eval).wasNotCalled();
$browserXhr.flush();
expect(eval).wasCalled();
eval.reset(); //reset the spy
cache('GET', '/url', null, callback);
expect(eval).wasNotCalled();
$browser.defer.flush();
expect(eval).wasCalled();
});
});
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