fix: spawn child process with process.env in macOS arm64 (#25753)

Co-authored-by: Matt Schile <mschile@cypress.io>
Co-authored-by: Emily Rohrbough <emilyrohrbough@users.noreply.github.com>
Co-authored-by: Zach Bloomquist <github@chary.us>

cli/CHANGELOG.md

@@ -15,6 +15,7 @@ _Released 02/14/2023 (PENDING)_
 - Fixed an issue with the Cloud project selection modal not showing the correct prompts. Fixes [#25520](https://github.com/cypress-io/cypress/issues/25520).
 - Fixed an issue in middleware where error-handling code could itself generate an error and fail to report the original issue. Fixes [#22825](https://github.com/cypress-io/cypress/issues/22825).
 - Fixed an issue that could cause the Debug page to display a different number of specs for in-progress runs than shown in Cypress Cloud. Fixes [#25647](https://github.com/cypress-io/cypress/issues/25647).
+- Fixed an issue introduced in Cypress 12.3.0 where custom browsers that relied on process environment variables were not found on macOS arm64 architectures. Fixed in [#25753](https://github.com/cypress-io/cypress/pull/25753).
 
 **Misc:**
 

packages/launcher/lib/utils.ts

@@ -42,7 +42,7 @@ export const utils = {
       let stdout = ''
       let stderr = ''
 
-      const proc = utils.spawnWithArch(cmd, args, { stdio: ['ignore', 'pipe', 'pipe'] })
+      const proc = utils.spawnWithArch(cmd, args, { stdio: ['ignore', 'pipe', 'pipe'], env: process.env })
 
       const finish = () => {
         proc.kill()

packages/launcher/test/unit/darwin_spec.ts

@@ -90,6 +90,7 @@ describe('darwin browser detection', () => {
 
   context('forces correct architecture', () => {
     function stubForArch (arch: 'arm64' | 'x64') {
+      sinon.stub(process, 'env').value({ env2: 'false', env3: 'true' })
       sinon.stub(os, 'arch').returns(arch)
       sinon.stub(os, 'platform').returns('darwin')
       getOutput.restore()
@@ -111,6 +112,8 @@ describe('darwin browser detection', () => {
         expect(args[1]).to.deep.eq([knownBrowsers[0].binary, '--version'])
         expect(args[2].env).to.deep.include({
           ARCHPREFERENCE: 'arm64,x86_64',
+          env2: 'false',
+          env3: 'true',
         })
       })
 
@@ -125,15 +128,18 @@ describe('darwin browser detection', () => {
 
         expect(args[0]).to.eq(knownBrowsers[0].binary)
         expect(args[1]).to.deep.eq(['--version'])
-        expect(args[2].env).to.not.exist
+        expect(args[2].env).to.deep.include({
+          env2: 'false',
+          env3: 'true',
+        })
       })
     })
 
     context('in browser launching', () => {
       it('uses arch and ARCHPREFERENCE on arm64', async () => {
         const cpSpawn = stubForArch('arm64')
 
-        await launch({ path: 'chrome' } as unknown as FoundBrowser, 'url', 123, ['arg1'], { env1: 'true' })
+        await launch({ path: 'chrome' } as unknown as FoundBrowser, 'url', 123, ['arg1'], { env1: 'true', env2: 'true' })
 
         const { args } = cpSpawn.getCall(0)
 
@@ -142,20 +148,24 @@ describe('darwin browser detection', () => {
         expect(args[2].env).to.deep.include({
           ARCHPREFERENCE: 'arm64,x86_64',
           env1: 'true',
+          env2: 'false',
+          env3: 'true',
         })
       })
 
       it('does not use `arch` on x64', async () => {
         const cpSpawn = stubForArch('x64')
 
-        await launch({ path: 'chrome' } as unknown as FoundBrowser, 'url', 123, ['arg1'], { env1: 'true' })
+        await launch({ path: 'chrome' } as unknown as FoundBrowser, 'url', 123, ['arg1'], { env1: 'true', env2: 'true' })
 
         const { args } = cpSpawn.getCall(0)
 
         expect(args[0]).to.eq('chrome')
         expect(args[1]).to.deep.eq(['url', 'arg1'])
         expect(args[2].env).to.deep.include({
           env1: 'true',
+          env2: 'false',
+          env3: 'true',
         })
 
         expect(args[2].env).to.not.have.property('ARCHPREFERENCE')