Join the 1-day Testing & QA Summit featuring 15+ Expert Speakers.Register for FREE! 
How to use responseMustHaveEmptyBody method in Cypress
Best JavaScript code snippet using cypress
response-middleware.js
Source:response-middleware.js 
...67// https://github.com/cypress-io/cypress/issues/429868// https://tools.ietf.org/html/rfc7230#section-3.3.369// HEAD, 1xx, 204, and 304 responses should never contain anything after headers70var NO_BODY_STATUS_CODES = [204, 304];71function responseMustHaveEmptyBody(req, res) {72 return lodash_1.default.some([lodash_1.default.includes(NO_BODY_STATUS_CODES, res.statusCode), lodash_1.default.invoke(req.method, 'toLowerCase') === 'head']);73}74function setCookie(res, k, v, domain) {75 var opts = { domain: domain };76 if (!v) {77 v = '';78 opts.expires = new Date(0);79 }80 return res.cookie(k, v, opts);81}82function setInitialCookie(res, remoteState, value) {83 // dont modify any cookies if we're trying to clear the initial cookie and we're not injecting anything84 // dont set the cookies if we're not on the initial request85 if ((!value && !res.wantsInjection) || !res.isInitial) {86 return;87 }88 return setCookie(res, '__cypress.initial', value, remoteState.domainName);89}90// "autoplay *; document-domain 'none'" => { autoplay: "*", "document-domain": "'none'" }91var parseFeaturePolicy = function (policy) {92 var pairs = policy.split('; ').map(function (directive) { return directive.split(' '); });93 return lodash_1.default.fromPairs(pairs);94};95// { autoplay: "*", "document-domain": "'none'" } => "autoplay *; document-domain 'none'"96var stringifyFeaturePolicy = function (policy) {97 var pairs = lodash_1.default.toPairs(policy);98 return pairs.map(function (directive) { return directive.join(' '); }).join('; ');99};100var LogResponse = function () {101 debug('received response %o', {102 req: lodash_1.default.pick(this.req, 'method', 'proxiedUrl', 'headers'),103 incomingRes: lodash_1.default.pick(this.incomingRes, 'headers', 'statusCode'),104 });105 this.next();106};107var PatchExpressSetHeader = function () {108 var _this = this;109 var incomingRes = this.incomingRes;110 var originalSetHeader = this.res.setHeader;111 // Node uses their own Symbol object, so use this to get the internal kOutHeaders112 // symbol - Symbol.for('kOutHeaders') will not work113 var getKOutHeadersSymbol = function () {114 var findKOutHeadersSymbol = function () {115 return lodash_1.default.find(Object.getOwnPropertySymbols(_this.res), function (sym) {116 return sym.toString() === 'Symbol(kOutHeaders)';117 });118 };119 var sym = findKOutHeadersSymbol();120 if (sym) {121 return sym;122 }123 // force creation of a new header field so the kOutHeaders key is available124 _this.res.setHeader('X-Cypress-HTTP-Response', 'X');125 _this.res.removeHeader('X-Cypress-HTTP-Response');126 sym = findKOutHeadersSymbol();127 if (!sym) {128 throw new Error('unable to find kOutHeaders symbol');129 }130 return sym;131 };132 var kOutHeaders;133 this.res.setHeader = function (name, value) {134 // express.Response.setHeader does all kinds of silly/nasty stuff to the content-type...135 // but we don't want to change it at all!136 if (name === 'content-type') {137 value = incomingRes.headers['content-type'] || value;138 }139 // run the original function - if an "invalid header char" error is raised,140 // set the header manually. this way we can retain Node's original error behavior141 try {142 return originalSetHeader.call(this, name, value);143 }144 catch (err) {145 if (err.code !== 'ERR_INVALID_CHAR') {146 throw err;147 }148 debug('setHeader error ignored %o', { name: name, value: value, code: err.code, err: err });149 if (!kOutHeaders) {150 kOutHeaders = getKOutHeadersSymbol();151 }152 // https://github.com/nodejs/node/blob/42cce5a9d0fd905bf4ad7a2528c36572dfb8b5ad/lib/_http_outgoing.js#L483-L495153 var headers = this[kOutHeaders];154 if (!headers) {155 this[kOutHeaders] = headers = Object.create(null);156 }157 headers[name.toLowerCase()] = [name, value];158 }159 };160 this.next();161};162var SetInjectionLevel = function () {163 var _this = this;164 this.res.isInitial = this.req.cookies['__cypress.initial'] === 'true';165 var getInjectionLevel = function () {166 if (_this.incomingRes.headers['x-cypress-file-server-error'] && !_this.res.isInitial) {167 return 'partial';168 }169 if (!resContentTypeIs(_this.incomingRes, 'text/html') || !reqMatchesOriginPolicy(_this.req, _this.getRemoteState())) {170 return false;171 }172 if (_this.res.isInitial) {173 return 'full';174 }175 if (!reqWillRenderHtml(_this.req)) {176 return false;177 }178 return 'partial';179 };180 if (!this.res.wantsInjection) {181 this.res.wantsInjection = getInjectionLevel();182 }183 this.res.wantsSecurityRemoved = this.config.modifyObstructiveCode && ((this.res.wantsInjection === 'full')184 || resContentTypeIsJavaScript(this.incomingRes));185 debug('injection levels: %o', lodash_1.default.pick(this.res, 'isInitial', 'wantsInjection', 'wantsSecurityRemoved'));186 this.next();187};188// https://github.com/cypress-io/cypress/issues/6480189var MaybeStripDocumentDomainFeaturePolicy = function () {190 var featurePolicy = this.incomingRes.headers["feature-policy"];191 if (featurePolicy) {192 var directives = parseFeaturePolicy(featurePolicy);193 if (directives['document-domain']) {194 delete directives['document-domain'];195 var policy = stringifyFeaturePolicy(directives);196 if (policy) {197 this.res.set('feature-policy', policy);198 }199 else {200 this.res.removeHeader('feature-policy');201 }202 }203 }204 this.next();205};206var OmitProblematicHeaders = function () {207 var headers = lodash_1.default.omit(this.incomingRes.headers, [208 'set-cookie',209 'x-frame-options',210 'content-length',211 'content-security-policy',212 'connection',213 ]);214 this.res.set(headers);215 this.next();216};217var MaybePreventCaching = function () {218 // do not cache injected responses219 // TODO: consider implementing etag system so even injected content can be cached220 if (this.res.wantsInjection) {221 this.res.setHeader('cache-control', 'no-cache, no-store, must-revalidate');222 }223 this.next();224};225var CopyCookiesFromIncomingRes = function () {226 var _this = this;227 var cookies = this.incomingRes.headers['set-cookie'];228 if (cookies) {229 [].concat(cookies).forEach(function (cookie) {230 try {231 _this.res.append('Set-Cookie', cookie);232 }233 catch (err) {234 debug('failed to Set-Cookie, continuing %o', { err: err, cookie: cookie });235 }236 });237 }238 this.next();239};240var REDIRECT_STATUS_CODES = [301, 302, 303, 307, 308];241// TODO: this shouldn't really even be necessary?242var MaybeSendRedirectToClient = function () {243 var _a = this.incomingRes, statusCode = _a.statusCode, headers = _a.headers;244 var newUrl = headers['location'];245 if (!REDIRECT_STATUS_CODES.includes(statusCode) || !newUrl) {246 return this.next();247 }248 setInitialCookie(this.res, this.getRemoteState(), true);249 debug('redirecting to new url %o', { statusCode: statusCode, newUrl: newUrl });250 this.res.redirect(Number(statusCode), newUrl);251 return this.end();252};253var CopyResponseStatusCode = function () {254 this.res.status(Number(this.incomingRes.statusCode));255 this.next();256};257var ClearCyInitialCookie = function () {258 setInitialCookie(this.res, this.getRemoteState(), false);259 this.next();260};261var MaybeEndWithEmptyBody = function () {262 if (responseMustHaveEmptyBody(this.req, this.incomingRes)) {263 this.res.end();264 return this.end();265 }266 this.next();267};268var MaybeGunzipBody = function () {269 if (resIsGzipped(this.incomingRes) && (this.res.wantsInjection || this.res.wantsSecurityRemoved)) {270 debug('ungzipping response body');271 var gunzip = zlib_1.default.createGunzip(zlibOptions);272 this.incomingResStream = this.incomingResStream.pipe(gunzip).on('error', this.onError);273 }274 else {275 this.skipMiddleware('GzipBody'); // not needed anymore276 }...
proxy.js
Source:proxy.js
...140 isGzipped: isGzipped,141 wantsInjection: wantsInjection,142 wantsSecurityRemoved: wantsSecurityRemoved143 });144 if (responseMustHaveEmptyBody(req.method, statusCode)) {145 return res.end();146 }147 if (wantsInjection) {148 rewrite = function(body) {149 var decodedBody, nodeCharset, rewrittenBody;150 nodeCharset = getNodeCharsetFromResponse(headers, body);151 decodedBody = iconv.decode(body, nodeCharset);152 rewrittenBody = rewriter.html(decodedBody, remoteState.domainName, wantsInjection, wantsSecurityRemoved);153 return iconv.encode(rewrittenBody, nodeCharset);154 };155 injection = concat(function(body) {156 if (_.isEqual(body, [])) {157 body = Buffer.from('');158 }...
response.js
Source:response.js
...39 this.next();40 };41 this.makeResStreamPlainText();42 const body = yield new Promise((resolve) => {43 if (network_1.httpUtils.responseMustHaveEmptyBody(this.req, this.incomingRes)) {44 resolve(Buffer.from(''));45 }46 else {47 this.incomingResStream.pipe((0, network_1.concatStream)(resolve));48 }49 })50 .then((buf) => {51 return (0, istextorbinary_1.getEncoding)(buf) !== 'binary' ? buf.toString('utf8') : buf;52 });53 const res = lodash_1.default.extend(lodash_1.default.pick(this.incomingRes, types_1.SERIALIZABLE_RES_PROPS), {54 url: this.req.proxiedUrl,55 body,56 });57 if (!lodash_1.default.isString(res.body) && !lodash_1.default.isBuffer(res.body)) {...
http-utils.js
Source:http-utils.js
...8// https://github.com/cypress-io/cypress/issues/42989// https://tools.ietf.org/html/rfc7230#section-3.3.310// HEAD, 1xx, 204, and 304 responses should never contain anything after headers11const NO_BODY_STATUS_CODES = [204, 304];12function responseMustHaveEmptyBody(req, res) {13 return lodash_1.default.includes(NO_BODY_STATUS_CODES, res.statusCode) || (req.method && req.method.toLowerCase() === 'head');14}15exports.responseMustHaveEmptyBody = responseMustHaveEmptyBody;16/**17 * HTTP options to make Node.js's HTTP libraries behave as leniently as possible.18 *19 * These should be used whenever Cypress is processing "real-world" HTTP requests - like when setting up a proxy20 * server or sending outgoing requests.21 */22exports.lenientOptions = {23 // increase header buffer for incoming response (ClientRequest) request (Server) headers, from 16KB to 1MB24 // @see https://github.com/cypress-io/cypress/issues/7625 maxHeaderSize: Math.pow(1024, 2),26 // allow requests which contain invalid/malformed headers...
Using AI Code Generation
1describe('My First Test', function() {2 it('Does not do much!', function() {3 cy.contains('type').click()4 cy.url().should('include', '/commands/actions')5 cy.get('.action-email')6 .type('
Using AI Code Generation
1Cypress.Commands.add('responseMustHaveEmptyBody', () => {2 cy.get('@response').then((response) => {3 expect(response.body).to.be.empty4 })5})6describe('Test responseMustHaveEmptyBody method', () => {7 beforeEach(() => {8 .as('response')9 })10 it('response must have empty body', () => {11 cy.responseMustHaveEmptyBody()12 })13})14describe('Test responseMustHaveEmptyBody method', () => {15 beforeEach(() => {16 .as('response')17 })18 it('response must have empty body', () => {19 cy.responseMustHaveEmptyBody()20 })21})22describe('Test responseMustHaveEmptyBody method', () => {23 beforeEach(() => {24 .as('response')25 })26 it('response must have empty body', () => {27 cy.responseMustHaveEmptyBody()28 })29})30describe('Test responseMustHaveEmptyBody method', () => {31 beforeEach(() => {32 .as('response')33 })34 it('response must have empty body', () => {35 cy.responseMustHaveEmptyBody()36 })37})38describe('Test responseMustHaveEmptyBody method', () => {39 beforeEach(() => {40 .as('response')41 })42 it('response must have empty body', () => {
Using AI Code Generation
1describe('Test Response Body', () => {2 it('Test Response Body', () => {3 .its('body')4 .should('be.empty')5 })6})7describe('Test Response Body', () => {8 it('Test Response Body', () => {9 .its('body')10 .should('be.empty')11 })12})13describe('Test Response Body', () => {14 it('Test Response Body', () => {15 .its('body')16 .should('be.empty')17 })18})19describe('Test Response Body', () => {20 it('Test Response Body', () => {21 .its('body')22 .should('be.empty')23 })24})25describe('Test Response Body', () => {26 it('Test Response Body', () => {27 .its('body')28 .should('be.empty')29 })30})31describe('Test Response Body', () => {32 it('Test Response Body', () => {33 .its('body')34 .should('be.empty')35 })36})37describe('Test Response Body', () => {38 it('Test Response Body', () => {39 .its('body')40 .should('be.empty')41 })42})43describe('Test Response Body', () => {44 it('Test Response Body',
Using AI Code Generation
1it('should have no body', () => {2 expect(response.body).to.be.empty3 })4})5it('should have no body', () => {6 expect(response.body).to.be.empty7 })8})9it('should have no body', () => {10 expect(response.body).to.be.empty11 })12})13it('should have no body', () => {14 expect(response.body).to.be.empty15 })16})17it('should have no body', () => {18 expect(response.body).to.be.empty19 })20})21it('should have no body', () => {22 expect(response.body).to.be.empty23 })24})25it('should have no body', () => {26 expect(response.body).to.be.empty27 })28})29it('should have no body', () => {30 expect(response.body).to.be.empty31 })32})33it('should have no body', () => {
Using AI Code Generation
1it('should have an empty body', () => {2 .its('body')3 .should('be.empty')4})5it('should have a 200 status code', () => {6 .its('status')7 .should('equal', 200)8})9it('should have a content-type header', () => {10 .its('headers')11 .should('have.property', 'content-type')12})13it('should have a body', () => {14 .its('body')15 .should('not.be.empty')16})17it('should have a body property', () => {18 .its('body')19 .should('have.property', 'foo')20})21it('should have a body property with a value', () => {22 .its('body')23 .should('have.property', 'foo',
Using AI Code Generation
1responseMustHaveEmptyBody: (response) => {2 expect(response.body).to.be.empty;3 expect(response.headers).to.have.property('content-length');4 expect(response.headers['content-length']).to.equal('0');5 }6responseMustHaveEmptyBody: (response) => {7 expect(response.body).to.be.empty;8 expect(response.headers).to.have.property('content-length');9 expect(response.headers['content-length']).to.equal('0');10 }11responseMustHaveEmptyBody: (response) => {12 expect(response.body).to.be.empty;13 expect(response.headers).to.have.property('content-length');14 expect(response.headers['content-length']).to.equal('0');15 }16responseMustHaveEmptyBody: (response) => {17 expect(response.body).to.be.empty;18 expect(response.headers).to.have.property('content-length');19 expect(response.headers['content-length']).to.equal('0');20 }21responseMustHaveEmptyBody: (response) => {22 expect(response.body).to.be.empty;23 expect(response.headers).to.have.property('content-length');24 expect(response.headers['content-length']).to.equal('0');25 }26responseMustHaveEmptyBody: (response) => {27 expect(response.body).to.be.empty;28 expect(response.headers).to.have.property('content-length');29 expect(response.headers['content-length']).to.equal('0');30 }31responseMustHaveEmptyBody: (response) => {32 expect(response.body).to.be.empty;33 expect(response.headers).to.have.property('content-length');34 expect(response.headers['content-length']).to.equal('0');35 }36responseMustHaveEmptyBody: (response) => {37 expect(response.body).to.be.empty;38 expect(response.headers).to.have.property('content-length');39 expect(response.headers['
Using AI Code Generation
1cy.request("/api/users").then((response) => {2 cy.responseMustHaveEmptyBody(response);3});4cy.request("/api/users").then((response) => {5 cy.responseMustHaveStatusCode(response, 200);6});7cy.request("/api/users").then((response) => {8 cy.responseMustHaveStatusCode200(response);9});10cy.request("/api/users").then((response) => {11 cy.responseMustHaveStatusCode201(response);12});13cy.request("/api/users").then((response) => {14 cy.responseMustHaveStatusCode204(response);15});16cy.request("/api/users").then((response) => {17 cy.responseMustHaveStatusCode400(response);18});19cy.request("/api/users").then((response) => {20 cy.responseMustHaveStatusCode401(response);21});22cy.request("/api/users").then((response) => {23 cy.responseMustHaveStatusCode403(response);24});25cy.request("/api/users").then((response) => {26 cy.responseMustHaveStatusCode404(response);27});28cy.request("/api/users
Using AI Code Generation
1 .its('body')2 .should('be.empty')3 .allRequestResponses()4 .should('have.length', 1)5 .its('body')6 .should('be.empty')7 .its('headers')8 .should('have.property', 'content-type')
Using AI Code Generation
1it('My Test Case', () => {2 .its('body')3 .should('be.empty');4 });5### cy.visit()6it('My Test Case', () => {7 });8### cy.contains()9it('My Test Case', () => {10 cy.contains('type');11 });12### cy.get()13it('My Test Case', () => {14 cy.get('input');15 });16### cy.get().click()
Cypress Tutorial
Cypress is a renowned Javascript-based open-source, easy-to-use end-to-end testing framework primarily used for testing web applications. Cypress is a relatively new player in the automation testing space and has been gaining much traction lately, as evidenced by the number of Forks (2.7K) and Stars (42.1K) for the project. LambdaTest’s Cypress Tutorial covers step-by-step guides that will help you learn from the basics till you run automation tests on LambdaTest.
Chapters:
- What is Cypress? -
- Why Cypress? - Learn why Cypress might be a good choice for testing your web applications.
- Features of Cypress Testing - Learn about features that make Cypress a powerful and flexible tool for testing web applications.
- Cypress Drawbacks - Although Cypress has many strengths, it has a few limitations that you should be aware of.
- Cypress Architecture - Learn more about Cypress architecture and how it is designed to be run directly in the browser, i.e., it does not have any additional servers.
- Browsers Supported by Cypress - Cypress is built on top of the Electron browser, supporting all modern web browsers. Learn browsers that support Cypress.
- Selenium vs Cypress: A Detailed Comparison - Compare and explore some key differences in terms of their design and features.
- Cypress Learning: Best Practices - Take a deep dive into some of the best practices you should use to avoid anti-patterns in your automation tests.
- How To Run Cypress Tests on LambdaTest? - Set up a LambdaTest account, and now you are all set to learn how to run Cypress tests.
Certification
You can elevate your expertise with end-to-end testing using the Cypress automation framework and stay one step ahead in your career by earning a Cypress certification. Check out our Cypress 101 Certification.
YouTube
Watch this 3 hours of complete tutorial to learn the basics of Cypress and various Cypress commands with the Cypress testing at LambdaTest.
Run Cypress automation tests on LambdaTest cloud grid
Perform automation testing on 3000+ real desktop and mobile devices online.
Try LambdaTest Now !!
Get 100 minutes of automation test minutes FREE!!
Was this article helpful?
