test: freeze clock when testing startup logs

Author: danielroe

packages/nuxt-cli/test/unit/dev-startup-log.spec.ts

@@ -35,15 +35,23 @@ describe('startup reporter', () => {
 
 afterEach(()=>{
 reporters.splice(0).forEach(reporter=>reporter.stop())
+vi.restoreAllMocks()
 })
 
+/** The transient line renders elapsed time from the wall clock, which would otherwise tick between the update and the assertion. */
+functionfreezeClock(): void{
+constnow=Date.now()
+vi.spyOn(Date,'now').mockReturnValue(now)
+}
+
 functionreporter(animated: boolean): StartupReporter{
 constinstance=createStartupReporter({ animated })
 reporters.push(instance)
 returninstance
 }
 
 it('should keep the progress line in place while loading',async()=>{
+freezeClock()
 constrenderer=awaitrender(()=>{
 conststartup=reporter(true)
 startup.update(snapshot())
@@ -149,6 +157,7 @@ describe('startup reporter', () => {
 }
 
 it('should keep the progress line in place under the dev console wrapper',async()=>{
+freezeClock()
 constrenderer=awaitrender(async()=>{
 constrestore=wrapStdoutAsConsolaDoes()
 try{