fix: find waiting for cy.intercept when it has been overwritten by the user (#9596)

packages/driver/cypress/integration/commands/net_stubbing_spec.ts

@@ -2277,5 +2277,96 @@ describe('network stubbing', { retries: 2 }, function () {
         .then(testResponse('something different', done))
       })
     })
+
+    // @see https://github.com/cypress-io/cypress/issues/9580
+    context('overwrite cy.intercept', () => {
+      it('works with an alias by default', () => {
+        // sanity test before testing it with the cy.intercept overwrite
+        cy.intercept('/foo', 'my value').as('netAlias')
+        .then(() => {
+          return $.get('/foo')
+        })
+
+        cy.wait('@netAlias').its('response.body').should('equal', 'my value')
+      })
+
+      it('works with an alias and function', () => {
+        let myInterceptCalled
+
+        cy.spy(cy, 'log')
+
+        Cypress.Commands.overwrite('intercept', function (originalIntercept, ...args) {
+          return cy.log('intercept!').then(() => {
+            myInterceptCalled = true
+
+            return originalIntercept(...args)
+          })
+        })
+
+        cy.intercept('/foo', 'my value').as('netAlias')
+        .then(() => {
+          return $.get('/foo')
+        })
+        .then(() => {
+          expect(myInterceptCalled, 'my intercept was called').to.be.true
+          expect(cy.log).to.have.been.calledWith('intercept!')
+        })
+
+        cy.wait('@netAlias').its('response.body').should('equal', 'my value')
+      })
+
+      it('works with an alias and arrow function', () => {
+        let myInterceptCalled
+
+        cy.spy(cy, 'log')
+
+        Cypress.Commands.overwrite('intercept', (originalIntercept, ...args) => {
+          return cy.log('intercept!').then(() => {
+            myInterceptCalled = true
+
+            return originalIntercept(...args)
+          })
+        })
+
+        cy.intercept('/foo', 'my value').as('netAlias')
+        .then(() => {
+          return $.get('/foo')
+        })
+        .then(() => {
+          expect(myInterceptCalled, 'my intercept was called').to.be.true
+          expect(cy.log).to.have.been.calledWith('intercept!')
+        })
+
+        cy.wait('@netAlias').its('response.body').should('equal', 'my value')
+      })
+
+      it('works with dynamic alias', () => {
+        let myInterceptCalled
+
+        cy.spy(cy, 'log')
+
+        Cypress.Commands.overwrite('intercept', (originalIntercept, ...args) => {
+          return cy.log('intercept!').then(() => {
+            myInterceptCalled = true
+
+            return originalIntercept(...args)
+          })
+        })
+
+        cy.intercept('/foo', (req) => {
+          req.alias = 'netAlias'
+          req.reply('my value')
+        })
+        .then(() => {
+          return $.get('/foo')
+        })
+        .then(() => {
+          expect(myInterceptCalled, 'my intercept was called').to.be.true
+          expect(cy.log).to.have.been.calledWith('intercept!')
+        })
+
+        cy.wait('@netAlias').its('response.body').should('equal', 'my value')
+      })
+    })
   })
 })

packages/driver/src/cy/commands/waiting.js

@@ -156,11 +156,28 @@ module.exports = (Commands, Cypress, cy, state) => {
         log.set('referencesAlias', aliases)
       }
 
-      if (command && !['route', 'route2', 'intercept'].includes(command.get('name'))) {
-        $errUtils.throwErrByPath('wait.invalid_alias', {
-          onFail: options._log,
-          args: { alias },
-        })
+      const isNetworkInterceptCommand = (command) => {
+        const commandsThatCreateNetworkIntercepts = ['route', 'route2', 'intercept']
+        const commandName = command.get('name')
+
+        return commandsThatCreateNetworkIntercepts.includes(commandName)
+      }
+
+      const findInterceptAlias = (alias) => {
+        const routes = cy.state('routes') || {}
+
+        return _.find(_.values(routes), { alias })
+      }
+
+      const isInterceptAlias = (alias) => Boolean(findInterceptAlias(alias))
+
+      if (command && !isNetworkInterceptCommand(command)) {
+        if (!isInterceptAlias(alias)) {
+          $errUtils.throwErrByPath('wait.invalid_alias', {
+            onFail: options._log,
+            args: { alias },
+          })
+        }
       }
 
       // create shallow copy of each options object