update e2e tests to check for compressed page responses

Author: danielcondemarin

packages/e2e-tests/next-app/cypress/integration/pages.test.ts

@@ -18,6 +18,9 @@ describe("Pages Tests", () => {
         (method) => {
           it(`allows HTTP method for path ${path}: ${method}`, () => {
             cy.request({ url: path, method: method }).then((response) => {
+              if (method !== "HEAD") {
+                cy.verifyResponseIsCompressed(response);
+              }
               expect(response.status).to.equal(200);
             });
           });
@@ -46,6 +49,9 @@ describe("Pages Tests", () => {
         (method) => {
           it(`allows HTTP method for path ${path}: ${method}`, () => {
             cy.request({ url: path, method: method }).then((response) => {
+              if (method !== "HEAD") {
+                cy.verifyResponseIsCompressed(response);
+              }
               expect(response.status).to.equal(200);
             });
           });

packages/e2e-tests/test-utils/cypress/custom-commands.ts

@@ -44,6 +44,9 @@ declare namespace Cypress {
       response: Cypress.Response,
       shouldBeCached: boolean
     ) => Cypress.Chainable<JQuery>;
+    verifyResponseIsCompressed: (
+      response: Cypress.Response
+    ) => Cypress.Chainable<JQuery>;
   }
 }
 
@@ -140,3 +143,10 @@ Cypress.Commands.add(
     }
   }
 );
+
+Cypress.Commands.add(
+  "verifyResponseIsCompressed",
+  (response: Cypress.Response) => {
+    expect(response.headers["content-encoding"]).to.equal("gzip");
+  }
+);