/
http-client.spec.js
433 lines (361 loc) · 13.3 KB
/
http-client.spec.js
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import {HttpClient} from '../src/http-client';
import {HttpClientConfiguration} from '../src/http-client-configuration';
describe('HttpClient', () => {
let originalFetch = window.fetch;
let client;
let fetch;
function setUpTests() {
beforeEach(() => {
client = new HttpClient();
fetch = window.fetch = jasmine.createSpy('fetch');
});
afterEach(() => {
fetch = window.fetch = originalFetch;
});
}
setUpTests();
it('errors on missing fetch implementation', () => {
window.fetch = undefined;
expect(() => new HttpClient()).toThrow();
});
describe('configure', () => {
it('accepts plain objects', () => {
let defaults = {};
client.configure(defaults);
expect(client.isConfigured).toBe(true);
expect(client.defaults).toBe(defaults);
});
it('accepts configuration callbacks', () => {
let defaults = { foo: true };
let baseUrl = '/test';
let interceptor = {};
client.configure(config => {
expect(config).toEqual(jasmine.any(HttpClientConfiguration));
return config
.withDefaults(defaults)
.withBaseUrl(baseUrl)
.withInterceptor(interceptor);
});
expect(client.isConfigured).toBe(true);
expect(client.defaults.foo).toBe(true);
expect(client.baseUrl).toBe(baseUrl);
expect(client.interceptors.indexOf(interceptor)).toBe(0);
});
it('rejects invalid configs', () => {
expect(() => client.configure(1)).toThrow();
});
it('applies standard configuration', () => {
client.configure(config => config.useStandardConfiguration());
expect(client.defaults.credentials).toBe('same-origin');
expect(client.interceptors.length).toBe(1);
});
it('rejects error responses', () => {
client.configure(config => config.rejectErrorResponses());
expect(client.interceptors.length).toBe(1);
});
});
describe('fetch', () => {
it('makes requests with string inputs', (done) => {
fetch.and.returnValue(emptyResponse(200));
client
.fetch('http://example.com/some/cool/path')
.then(result => {
expect(result.ok).toBe(true);
})
.catch(result => {
expect(result).not.toBe(result);
})
.then(() => {
expect(fetch).toHaveBeenCalled();
done();
});
});
it('makes requests with Request inputs', (done) => {
fetch.and.returnValue(emptyResponse(200));
client
.fetch(new Request('http://example.com/some/cool/path'))
.then(result => {
expect(result.ok).toBe(true);
})
.catch(result => {
expect(result).not.toBe(result);
})
.then(() => {
expect(fetch).toHaveBeenCalled();
done();
});
});
it('makes requests with Request inputs when configured', (done) => {
fetch.and.returnValue(emptyResponse(200));
client.configure(config => config.withBaseUrl('http://example.com/'));
client
.fetch(new Request('some/cool/path'))
.then(result => {
expect(result.ok).toBe(true);
})
.catch(result => {
expect(result).not.toBe(result);
})
.then(() => {
expect(fetch).toHaveBeenCalled();
done();
});
});
});
describe('interceptors', () => {
setUpTests();
it('run on request', (done) => {
fetch.and.returnValue(emptyResponse(200));
let interceptor = { request(r) { return r; }, requestError(r) { throw r; } };
spyOn(interceptor, 'request').and.callThrough();
spyOn(interceptor, 'requestError').and.callThrough();
client.interceptors.push(interceptor);
client.fetch('path')
.then(() => {
expect(interceptor.request).toHaveBeenCalledWith(jasmine.any(Request));
expect(interceptor.requestError).not.toHaveBeenCalled();
done();
});
});
it('run on request error', (done) => {
fetch.and.returnValue(emptyResponse(200));
let interceptor = { request(r) { return r; }, requestError(r) { throw r; } };
spyOn(interceptor, 'request').and.callThrough();
spyOn(interceptor, 'requestError').and.callThrough();
client.interceptors.push({ request() { return Promise.reject(new Error('test')); }});
client.interceptors.push(interceptor);
client.fetch()
.catch(() => {
expect(interceptor.request).not.toHaveBeenCalled();
expect(interceptor.requestError).toHaveBeenCalledWith(jasmine.any(Error));
done();
});
});
it('run on response', (done) => {
fetch.and.returnValue(emptyResponse(200));
let interceptor = { response(r) { return r; }, responseError(r) { throw r; } };
spyOn(interceptor, 'response').and.callThrough();
spyOn(interceptor, 'responseError').and.callThrough();
client.interceptors.push(interceptor);
client.fetch('path')
.then(() => {
expect(interceptor.response).toHaveBeenCalledWith(jasmine.any(Response), jasmine.any(Request));
expect(interceptor.responseError).not.toHaveBeenCalled();
done();
});
});
it('run on response error', (done) => {
fetch.and.returnValue(Promise.reject(new Response(null, { status: 500 })));
let interceptor = { response(r) { return r; }, responseError(r) { throw r; } };
spyOn(interceptor, 'response').and.callThrough();
spyOn(interceptor, 'responseError').and.callThrough();
client.interceptors.push(interceptor);
client.fetch('path')
.catch(() => {
expect(interceptor.response).not.toHaveBeenCalled();
expect(interceptor.responseError).toHaveBeenCalledWith(jasmine.any(Response), jasmine.any(Request));
done();
});
});
it('normalizes input for interceptors', (done) => {
fetch.and.returnValue(emptyResponse(200));
let request;
client.interceptors.push({ request(r) { request = r; return r; } });
client
.fetch('http://example.com/some/cool/path')
.then(() => {
expect(request instanceof Request).toBe(true);
done();
});
});
it('runs multiple interceptors', (done) => {
fetch.and.returnValue(emptyResponse(200));
let first = { request(r) { return r; } };
let second = { request(r) { return r; } };
spyOn(first, 'request').and.callThrough();
spyOn(second, 'request').and.callThrough();
client.interceptors.push(first);
client.interceptors.push(second);
client.fetch('path')
.then(() => {
expect(first.request).toHaveBeenCalledWith(jasmine.any(Request));
expect(second.request).toHaveBeenCalledWith(jasmine.any(Request));
done();
});
});
it('request interceptors can modify request', (done) => {
fetch.and.returnValue(emptyResponse(200));
let interceptor = { request() { return new Request('http://aurelia.io/'); } };
client.interceptors.push(interceptor);
client.fetch('first')
.then(() => {
expect(fetch.calls.mostRecent().args[0].url).toBe('http://aurelia.io/');
done();
});
});
it('request interceptors can short circuit request', (done) => {
let response = new Response();
let interceptor = { request() { return response; } };
client.interceptors.push(interceptor);
client.fetch('path')
.then((r) => {
expect(r).toBe(response);
expect(fetch).not.toHaveBeenCalled();
done();
});
});
it('doesn\'t reject unsuccessful responses', (done) => {
let response = new Response(null, { status: 500 });
fetch.and.returnValue(Promise.resolve(response));
client.fetch('path')
.catch((r) => {
expect(r).not.toBe(response);
})
.then((r) => {
expect(r.ok).toBe(false);
done();
});
});
describe('rejectErrorResponses', () => {
it('can reject error responses', (done) => {
let response = new Response(null, { status: 500 });
fetch.and.returnValue(Promise.resolve(response));
client.configure(config => config.rejectErrorResponses());
client.fetch('path')
.then((r) => {
expect(r).not.toBe(r);
})
.catch((r) => {
expect(r).toBe(response);
done();
});
});
it('resolves successful requests', (done) => {
fetch.and.returnValue(emptyResponse(200));
client.configure(config => config.rejectErrorResponses());
client.fetch('path')
.catch((r) => {
expect(r).not.toBe(r);
})
.then((r) => {
expect(r.ok).toBe(true);
done();
});
});
});
});
describe('default request parameters', () => {
setUpTests();
it('applies baseUrl to requests', (done) => {
fetch.and.returnValue(emptyResponse(200));
client.baseUrl = 'http://aurelia.io/';
client.fetch('path')
.then(() => {
let [request] = fetch.calls.first().args;
expect(request.url).toBe('http://aurelia.io/path');
done();
});
});
it('applies default headers to requests with no headers', (done) => {
fetch.and.returnValue(emptyResponse(200));
client.defaults = { headers: { 'x-foo': 'bar' } };
client.fetch('path')
.then(() => {
let [request] = fetch.calls.first().args;
expect(request.headers.has('x-foo')).toBe(true);
expect(request.headers.get('x-foo')).toBe('bar');
done();
});
});
it('applies default headers to requests with other headers', (done) => {
fetch.and.returnValue(emptyResponse(200));
client.defaults = { headers: { 'x-foo': 'bar' } };
client.fetch('path', { headers: { 'x-baz': 'bat' } })
.then(() => {
let [request] = fetch.calls.first().args;
expect(request.headers.has('x-foo')).toBe(true);
expect(request.headers.has('x-baz')).toBe(true);
expect(request.headers.get('x-foo')).toBe('bar');
expect(request.headers.get('x-baz')).toBe('bat');
done();
});
});
it('applies default headers to requests using Headers instance', (done) => {
fetch.and.returnValue(emptyResponse(200));
client.defaults = { headers: { 'x-foo': 'bar' } };
client.fetch('path', { headers: new Headers({ 'x-baz': 'bat' }) })
.then(() => {
let [request] = fetch.calls.first().args;
expect(request.headers.has('x-foo')).toBe(true);
expect(request.headers.has('x-baz')).toBe(true);
expect(request.headers.get('x-foo')).toBe('bar');
expect(request.headers.get('x-baz')).toBe('bat');
done();
});
});
it('does not overwrite request headers with default headers', (done) => {
fetch.and.returnValue(emptyResponse(200));
client.defaults = { headers: { 'x-foo': 'bar' } };
client.fetch('path', { headers: { 'x-foo': 'baz' } })
.then(() => {
let [request] = fetch.calls.first().args;
expect(request.headers.has('x-foo')).toBe(true);
expect(request.headers.get('x-foo')).toBe('baz');
expect(request.headers.getAll('x-foo').length).toBe(1);
done();
});
});
it('evaluates default header function values with no headers', (done) => {
fetch.and.returnValue(emptyResponse(200));
client.defaults = { headers: { 'x-foo': () => 'bar' } };
client.fetch('path')
.then(() => {
let [request] = fetch.calls.first().args;
expect(request.headers.has('x-foo')).toBe(true);
expect(request.headers.get('x-foo')).toBe('bar');
done();
});
});
it('evaluates default header function values with other headers', (done) => {
fetch.and.returnValue(emptyResponse(200));
client.defaults = { headers: { 'x-foo': () => 'bar' } };
client.fetch('path', { headers: { 'x-baz': 'bat' } })
.then(() => {
let [request] = fetch.calls.first().args;
expect(request.headers.has('x-foo')).toBe(true);
expect(request.headers.has('x-baz')).toBe(true);
expect(request.headers.get('x-foo')).toBe('bar');
expect(request.headers.get('x-baz')).toBe('bat');
done();
});
});
it('evaluates default header function values on each request', (done) => {
fetch.and.returnValue(emptyResponse(200));
let value = 0;
client.defaults = {
headers: {
'x-foo': () => {
value++;
return value;
}
}
};
let promises = [];
promises.push(client.fetch('path1'));
promises.push(client.fetch('path2'));
Promise.all(promises)
.then(() => {
let [request1] = fetch.calls.first().args;
let [request2] = fetch.calls.mostRecent().args;
expect(request1.headers.has('x-foo')).toBe(true);
expect(request1.headers.get('x-foo')).toBe('1');
expect(request2.headers.has('x-foo')).toBe(true);
expect(request2.headers.get('x-foo')).toBe('2');
done();
});
});
});
});
function emptyResponse(status) {
return Promise.resolve(new Response(null, { status }));
}