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import Vue from 'vue';
import VueResource from 'vue-resource';
import Poll from '~/lib/utils/poll';
Vue.use(VueResource);
class ServiceMock {
constructor(endpoint) {
this.service = Vue.resource(endpoint);
}
fetch() {
return this.service.get();
}
}
describe('Poll', () => {
let callbacks;
beforeEach(() => {
callbacks = {
success: () => {},
error: () => {},
};
spyOn(callbacks, 'success');
spyOn(callbacks, 'error');
});
it('calls the success callback when no header for interval is provided', (done) => {
const successInterceptor = (request, next) => {
next(request.respondWith(JSON.stringify([]), { status: 200 }));
};
Vue.http.interceptors.push(successInterceptor);
new Poll({
resource: new ServiceMock('endpoint'),
method: 'fetch',
successCallback: callbacks.success,
errorCallback: callbacks.error,
}).makeRequest();
setTimeout(() => {
expect(callbacks.success).toHaveBeenCalled();
expect(callbacks.error).not.toHaveBeenCalled();
done();
}, 0);
Vue.http.interceptors = _.without(Vue.http.interceptors, successInterceptor);
});
it('calls the error callback whe the http request returns an error', (done) => {
const errorInterceptor = (request, next) => {
next(request.respondWith(JSON.stringify([]), { status: 500 }));
};
Vue.http.interceptors.push(errorInterceptor);
new Poll({
resource: new ServiceMock('endpoint'),
method: 'fetch',
successCallback: callbacks.success,
errorCallback: callbacks.error,
}).makeRequest();
setTimeout(() => {
expect(callbacks.success).not.toHaveBeenCalled();
expect(callbacks.error).toHaveBeenCalled();
done();
}, 0);
Vue.http.interceptors = _.without(Vue.http.interceptors, errorInterceptor);
});
it('should call the success callback when the interval header is -1', (done) => {
const intervalInterceptor = (request, next) => {
next(request.respondWith(JSON.stringify([]), { status: 200, headers: { 'poll-interval': -1 } }));
};
Vue.http.interceptors.push(intervalInterceptor);
new Poll({
resource: new ServiceMock('endpoint'),
method: 'fetch',
successCallback: callbacks.success,
errorCallback: callbacks.error,
}).makeRequest();
setTimeout(() => {
expect(callbacks.success).toHaveBeenCalled();
expect(callbacks.error).not.toHaveBeenCalled();
done();
}, 0);
Vue.http.interceptors = _.without(Vue.http.interceptors, intervalInterceptor);
});
it('starts polling when http status is 200 and interval header is provided', (done) => {
const pollInterceptor = (request, next) => {
next(request.respondWith(JSON.stringify([]), { status: 200, headers: { 'poll-interval': 2 } }));
};
Vue.http.interceptors.push(pollInterceptor);
const service = new ServiceMock('endpoint');
spyOn(service, 'fetch').and.callThrough();
new Poll({
resource: service,
method: 'fetch',
data: { page: 1 },
successCallback: callbacks.success,
errorCallback: callbacks.error,
}).makeRequest();
setTimeout(() => {
expect(service.fetch.calls.count()).toEqual(2);
expect(service.fetch).toHaveBeenCalledWith({ page: 1 });
expect(callbacks.success).toHaveBeenCalled();
expect(callbacks.error).not.toHaveBeenCalled();
done();
}, 5);
Vue.http.interceptors = _.without(Vue.http.interceptors, pollInterceptor);
});
describe('stop', () => {
it('stops polling when method is called', (done) => {
const pollInterceptor = (request, next) => {
next(request.respondWith(JSON.stringify([]), { status: 200, headers: { 'poll-interval': 2 } }));
};
Vue.http.interceptors.push(pollInterceptor);
const service = new ServiceMock('endpoint');
spyOn(service, 'fetch').and.callThrough();
const Polling = new Poll({
resource: service,
method: 'fetch',
data: { page: 1 },
successCallback: () => {
Polling.stop();
},
errorCallback: callbacks.error,
});
spyOn(Polling, 'stop').and.callThrough();
Polling.makeRequest();
setTimeout(() => {
expect(service.fetch.calls.count()).toEqual(1);
expect(service.fetch).toHaveBeenCalledWith({ page: 1 });
expect(Polling.stop).toHaveBeenCalled();
done();
}, 100);
Vue.http.interceptors = _.without(Vue.http.interceptors, pollInterceptor);
});
});
describe('restart', () => {
it('should restart polling when its called', (done) => {
const pollInterceptor = (request, next) => {
next(request.respondWith(JSON.stringify([]), { status: 200, headers: { 'poll-interval': 2 } }));
};
Vue.http.interceptors.push(pollInterceptor);
const service = new ServiceMock('endpoint');
spyOn(service, 'fetch').and.callThrough();
const Polling = new Poll({
resource: service,
method: 'fetch',
data: { page: 1 },
successCallback: () => {
Polling.stop();
setTimeout(() => {
Polling.restart();
}, 0);
},
errorCallback: callbacks.error,
});
spyOn(Polling, 'stop').and.callThrough();
Polling.makeRequest();
setTimeout(() => {
expect(service.fetch.calls.count()).toEqual(2);
expect(service.fetch).toHaveBeenCalledWith({ page: 1 });
expect(Polling.stop).toHaveBeenCalled();
done();
}, 10);
Vue.http.interceptors = _.without(Vue.http.interceptors, pollInterceptor);
});
});
});
|
