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'use strict';
describe('$xhr.cache', function() {
var scope, $browser, $browserXhr, $xhrErr, cache, log;
beforeEach(function() {
scope = angular.scope({}, null, {'$xhr.error': $xhrErr = jasmine.createSpy('$xhr.error')});
$browser = scope.$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 callback synchronously when sync flag is on', function() {
$browserXhr.expectGET('/url').respond('+');
cache('GET', '/url', null, callback, false, true);
expect(log).toEqual(''); //callback hasn't executed
$browserXhr.flush();
expect(log).toEqual('"+";'); //callback has executed
cache('GET', '/url', null, callback, false, true);
expect(log).toEqual('"+";"+";'); //callback has executed
$browser.defer.flush();
expect(log).toEqual('"+";"+";'); //callback was not called again any more
});
it('should call eval after callbacks for both cache hit and cache miss execute', function() {
var evalSpy = this.spyOn(scope, '$eval').andCallThrough();
$browserXhr.expectGET('/url').respond('+');
cache('GET', '/url', null, callback);
expect(evalSpy).not.toHaveBeenCalled();
$browserXhr.flush();
expect(evalSpy).toHaveBeenCalled();
evalSpy.reset(); //reset the spy
cache('GET', '/url', null, callback);
expect(evalSpy).not.toHaveBeenCalled();
$browser.defer.flush();
expect(evalSpy).toHaveBeenCalled();
});
it('should call the error callback on error if provided', function() {
var errorSpy = jasmine.createSpy('error'),
successSpy = jasmine.createSpy('success');
$browserXhr.expectGET('/url').respond(500, 'error');
cache('GET', '/url', null, successSpy, errorSpy, false, true);
$browserXhr.flush();
expect(errorSpy).toHaveBeenCalledWith(500, 'error');
expect(successSpy).not.toHaveBeenCalled();
errorSpy.reset();
cache('GET', '/url', successSpy, errorSpy, false, true);
$browserXhr.flush();
expect(errorSpy).toHaveBeenCalledWith(500, 'error');
expect(successSpy).not.toHaveBeenCalled();
});
it('should call the $xhr.error on error if error callback not provided', function() {
var errorSpy = jasmine.createSpy('error'),
successSpy = jasmine.createSpy('success');
$browserXhr.expectGET('/url').respond(500, 'error');
cache('GET', '/url', null, successSpy, false, true);
$browserXhr.flush();
expect(successSpy).not.toHaveBeenCalled();
expect($xhrErr).toHaveBeenCalledWith(
{method: 'GET', url: '/url', data: null, success: successSpy},
{status: 500, body: 'error'});
});
});
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