259 lines
8.1 KiB
JavaScript
259 lines
8.1 KiB
JavaScript
describe("FakeXMLHttpRequest", function() {
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var xhr;
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var xhr2;
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var mockAjax;
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beforeEach(function() {
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var realXMLHttpRequest = {someOtherProperty: 'someValue'},
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realXMLHttpRequestCtor = spyOn(window, 'XMLHttpRequest').and.returnValue(realXMLHttpRequest),
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fakeGlobal = {XMLHttpRequest: realXMLHttpRequestCtor};
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mockAjax = new window.MockAjax(fakeGlobal);
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mockAjax.install();
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xhr = new fakeGlobal.XMLHttpRequest();
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xhr2 = new fakeGlobal.XMLHttpRequest();
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});
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function objectKeys(obj) {
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var keys = [];
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for (var key in obj) {
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if (obj.hasOwnProperty(key)) {
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keys.push(key);
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}
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}
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return keys;
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}
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it("should have an initial readyState of 0 (uninitialized)", function() {
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expect(xhr.readyState).toEqual(0);
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});
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describe("when setting request headers", function() {
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beforeEach(function() {
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xhr.setRequestHeader('X-Header-1', 'one');
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});
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it("should make the request headers available", function() {
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expect(objectKeys(xhr.requestHeaders).length).toEqual(1);
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expect(xhr.requestHeaders['X-Header-1']).toEqual('one');
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});
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it('should combine request headers with the same header name', function() {
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xhr.setRequestHeader('X-Header-1', 'two');
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expect(objectKeys(xhr.requestHeaders).length).toEqual(1);
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expect(xhr.requestHeaders['X-Header-1']).toEqual('one, two');
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});
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describe("when setting headers on another xhr object", function() {
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beforeEach(function() {
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xhr2.setRequestHeader('X-Header-2', 'two');
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});
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it("should make the only its request headers available", function() {
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expect(objectKeys(xhr2.requestHeaders).length).toEqual(1);
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expect(xhr2.requestHeaders['X-Header-2']).toEqual('two');
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});
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it("should not modify any other xhr objects", function() {
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expect(objectKeys(xhr.requestHeaders).length).toEqual(1);
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expect(xhr.requestHeaders['X-Header-1']).toEqual('one');
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});
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});
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});
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describe("when opened", function() {
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beforeEach(function() {
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spyOn(xhr, 'onreadystatechange');
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xhr.open("GET", "http://example.com");
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});
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it("should have a readyState of 1 (open)", function() {
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expect(xhr.readyState).toEqual(1);
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expect(xhr.onreadystatechange).toHaveBeenCalled();
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});
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describe("when sent", function() {
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it("should have a readyState of 2 (sent)", function() {
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xhr.onreadystatechange.calls.reset();
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xhr.send(null);
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expect(xhr.readyState).toEqual(2);
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expect(xhr.onreadystatechange).toHaveBeenCalled();
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});
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});
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describe("when a response comes in", function() {
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it("should have a readyState of 4 (loaded)", function() {
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xhr.onreadystatechange.calls.reset();
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xhr.response({status: 200});
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expect(xhr.readyState).toEqual(4);
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expect(xhr.onreadystatechange).toHaveBeenCalled();
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});
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describe("when a second response comes in", function() {
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it("should throw an error", function() {
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xhr.onreadystatechange.calls.reset();
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xhr.response({status: 200});
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expect(function() { xhr.response({status: 200}); }).toThrowError('FakeXMLHttpRequest already completed');
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});
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});
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describe("when a second response comes in as a timout", function() {
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it("should throw an error", function() {
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xhr.onreadystatechange.calls.reset();
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xhr.response({status: 200});
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expect(function() { xhr.responseTimeout(); }).toThrowError('FakeXMLHttpRequest already completed');
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});
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});
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});
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describe("when aborted", function() {
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it("should have a readyState of 0 (uninitialized)", function() {
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xhr.onreadystatechange.calls.reset();
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xhr.abort();
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expect(xhr.readyState).toEqual(0);
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expect(xhr.onreadystatechange).toHaveBeenCalled();
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expect(xhr.status).toEqual(0);
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expect(xhr.statusText).toEqual("abort");
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});
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});
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});
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describe("when opened with a username/password", function() {
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beforeEach(function() {
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xhr.open("GET", "http://example.com", true, "username", "password");
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});
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it("should store the username", function() {
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expect(xhr.username).toEqual("username");
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});
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it("should store the password", function() {
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expect(xhr.password).toEqual("password");
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});
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});
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describe("data", function() {
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beforeEach(function() {
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xhr.open("POST", "http://example.com?this=that");
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});
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it("should be an empty object if no params were sent", function() {
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xhr.send();
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expect(xhr.data()).toEqual({});
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});
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it("should return request params as a hash of arrays", function() {
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xhr.send('3+stooges=shemp&3+stooges=larry%20%26%20moe%20%26%20curly&some%3Dthing=else+entirely');
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var data = xhr.data();
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expect(data['3 stooges'].length).toEqual(2);
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expect(data['3 stooges'][0]).toEqual('shemp');
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expect(data['3 stooges'][1]).toEqual('larry & moe & curly');
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expect(data['some=thing']).toEqual(['else entirely']);
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});
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it("should parse json when the content type is appropriate", function() {
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var data = {
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foo: 'bar',
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baz: ['q', 'u', 'u', 'x'],
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nested: {
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object: {
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containing: 'stuff'
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}
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}
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};
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xhr.setRequestHeader('Content-Type', 'application/json');
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xhr.send(JSON.stringify(data));
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expect(xhr.data()).toEqual(data);
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});
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it("should parse json even if there are further qualifiers", function() {
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var data = {
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foo: 'bar',
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baz: ['q', 'u', 'u', 'x'],
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nested: {
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object: {
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containing: 'stuff'
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}
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}
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};
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xhr.setRequestHeader('Content-Type', 'application/json; charset=utf-8');
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xhr.send(JSON.stringify(data));
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expect(xhr.data()).toEqual(data);
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});
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it("should be able to use a custom parser", function() {
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xhr.send('custom_format');
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var custom = {
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test: jasmine.createSpy('test').and.returnValue(true),
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parse: jasmine.createSpy('parse').and.returnValue('parsedFormat')
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};
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mockAjax.addCustomParamParser(custom);
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expect(xhr.data()).toBe('parsedFormat');
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expect(custom.test).toHaveBeenCalled();
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expect(custom.parse).toHaveBeenCalledWith('custom_format');
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});
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it("should clear custom parsers when uninstalled", function() {
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var custom = {
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test: jasmine.createSpy('test').and.returnValue(true),
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parse: jasmine.createSpy('parse').and.returnValue('parsedFormat')
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};
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mockAjax.addCustomParamParser(custom);
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xhr.send('custom_format');
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expect(xhr.data()).toBe('parsedFormat');
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mockAjax.uninstall();
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mockAjax.install();
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xhr.send('custom_format');
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expect(xhr.data()).toEqual({custom_format: [ 'undefined' ]});
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});
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});
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describe("contentType", function() {
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it("gets the Content-Type", function() {
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xhr.setRequestHeader('Content-Type', 'something');
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expect(xhr.contentType()).toEqual('something');
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});
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it("gets the content-type case-insensitively", function() {
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xhr.setRequestHeader('content-Type', 'some other thing');
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expect(xhr.contentType()).toEqual('some other thing');
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});
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});
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describe("getResponseHeader", function() {
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it("gets a response header case-insensitively", function() {
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xhr.send();
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xhr.response({
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status: 200,
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responseHeaders: {
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'X-Foo': 'Bar'
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}
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});
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expect(xhr.getResponseHeader('x-foo')).toBe('Bar');
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});
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});
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describe("overriding mime type", function() {
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it('has null override by default', function() {
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expect(xhr.overriddenMimeType).toBeNull();
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});
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it('records the override', function() {
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xhr.overrideMimeType('text/plain; charset: utf-8');
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expect(xhr.overriddenMimeType).toBe('text/plain; charset: utf-8');
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});
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});
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describe("when a fake XMLHttpRequest is created", function() {
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it("inherits the properties of the real XMLHttpRequest object", function() {
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expect(xhr.someOtherProperty).toBe('someValue');
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});
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});
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});
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