can't find package.json when running cypress test in azure pipeline yaml - azure-devops

Question

I'm trying to run a cypress test in an Azure Pipeline job using YAML. When the pipeline runs, it gets to the line where the cypress test runs and throws this error:
npm ERR! code ENOENT
npm ERR! syscall open
npm ERR! path C:\myagent\_work\5\s\package.json
npm ERR! errno -4058
npm ERR! enoent ENOENT: no such file or directory, open 'C:\myagent\_work\5\s\package.json'
npm ERR! enoent This is related to npm not being able to find a file.
npm ERR! enoent
Here is my YAML file:
trigger:
- master
pool:
name: Default
variables:
buildConfiguration: 'Release'
steps:
- task: NodeTool#0
displayName: 'Use Node 12.x'
inputs:
versionSpec: 12.18.3
checkLatest: false
- task: Npm#1
displayName: 'npm install'
inputs:
workingDir: WebApp
verbose: false
- task: Npm#1
displayName: 'Build Angular'
inputs:
command: custom
customCommand: run build -- --prod
workingDir: WebApp
- task: UseDotNet#2
displayName: 'Use .NET Core SDK 3.1.300'
inputs:
packageType: sdk
version: 3.1.300
- task: DotNetCoreCLI#2
displayName: 'dotnet restore'
inputs:
command: restore
projects: AppApi/AppApi.csproj
vstsFeed: '*************'
- task: DotNetCoreCLI#2
displayName: 'dotnet publish'
inputs:
command: publish
arguments: '--no-restore --configuration $(buildConfiguration) --verbosity quiet --output $(build.artifactstagingdirectory)'
publishWebProjects: true
zipAfterPublish: true
- script: 'npx cypress verify'
displayName: 'cypress verify'
failOnStderr: true
- script: 'npm run cy:run --headless --spec cypress/integration/TestDemoExpanded.spec.ts --project ./WebApp'
displayName: 'run cypress tests'
workingDirectory: $(Build.SourcesDirectory)/WebApp
My package.json is checked into my Git repository and is located in my WebApp subfolder. How do I solve this error?
UPDATED:
I added the workingDirectory parameter as suggested but now I have this new error: npm ERR! missing script: cypress
I solved the 'missing script' error. The cypress run command I had in my YAML file didn't match the cypress run command I had in my package.json. I updated the cypress run step and now the tests run in the pipeline.

Answer 1

The task searches the package.json in the root folder and not in WebApp.
Just add:
workingDirectory: $(Build.SourcesDirectory)/WebApp
To the cypress step:
- script: 'npm run cypress run --headless --spec cypress/integration/TestDemoExpanded.spec.ts --project ./WebApp'
displayName: 'run cypress tests'
workingDirectory: $(Build.SourcesDirectory)/WebApp