How to configure for Go modules in subdirectory?

[davidxia]

My repo has Go modules in a subdirectory named go. I followed the Github Actions instructions and have

    steps:
      - name: Configure Datadog Test Optimization
        uses: datadog/test-visibility-github-action@f4b026bb8b8b53f323960cf86a849a0231ff93b9 # v2.5.0
        with:
          languages: go
          api_key: ${{ secrets.DD_API_KEY }}
          site: datadoghq.com

      - name: Test
        working-directory: go
        run: go test -v ./...

But the "Configure Datadog Test Optimization" step fails with

install_test_visibility.sh: OK
go: downloading github.com/DataDog/orchestrion v1.6.1
go: downloading github.com/rs/zerolog v1.34.0
...
getting GOMOD: in "/home/runner/work/modal/modal": `go env GOMOD` returned a blank string
Error: Orchestrion pin failed.
Error: Process completed with exit code 1.

I tried setting the GITHUB_WORKSPACE env var for that step like so but get the same error.

        env:
          GITHUB_WORKSPACE: ${{ github.workspace }}/go

Is there a way to use this action for Go in a subdirectory or does it only work if go.mod is at the repo's root?

[tonyredondo]

Hi @davidxia can you provide the github actions workflow or a redacted version of it? The example is missing two critical steps before Configure Datadog Test Optimization in Go:

• The checkout action: without this there is not code run and test in the workspace.
• The Go setup action: with need a proper go installation and configuration in place before running our action.

If you can give me more info about your setup, I'll be happy to help you solve this issue.

[davidxia]

Of course! Thank you.

.github/workflows/go.yaml

name: Build Go

on:
  push:
    branches:
      - main
  pull_request:

jobs:
  build:
    runs-on: ubuntu-latest
    timeout-minutes: 30

    steps:
      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4

      - uses: ./.github/actions/setup-cached-go

      - name: Generate
        working-directory: go
        run: go generate ./...

      - name: Lint
        uses: golangci/golangci-lint-action@4afd733a84b1f43292c63897423277bb7f4313a9 # v8.0.0
        with:
          version: v2.4.0
          working-directory: go

      - name: Build
        working-directory: go
        run: go build -v ./...

      - name: Configure Datadog Test Optimization
        uses: datadog/test-visibility-github-action@f4b026bb8b8b53f323960cf86a849a0231ff93b9 # v2.5.0
        with:
          languages: go
          api_key: ${{ secrets.DD_API_KEY }}
          site: datadoghq.com

      - name: Test
        working-directory: go
        run: go test -v ./...

.github/actions/setup-cached-go/action.yml

name: setup-cached-go

description: Set up a shared Go environment

runs:
  using: composite
  steps:
    - name: Set up Go
      uses: actions/setup-go@d35c59abb061a4a6fb18e82ac0862c26744d6ab5 # v5
      with:
        go-version: "1.24.x"
        cache-dependency-path: go/go.sum