validate output in pr is empty when terraform validate fails

[mvbelik]

I use this configuration:

    steps:
      - uses: actions/checkout@v3
      - uses: hashicorp/setup-terraform@v2

      - name: Terraform fmt
        id: fmt
        run: terraform fmt -check
        continue-on-error: true

      - name: Terraform Init
        id: init
        run: terraform init

      - name: Terraform Validate
        id: validate
        run: terraform validate -no-color
        continue-on-error: true

      - name: Terraform Plan
        id: plan
        run: terraform plan -no-color
        continue-on-error: true

      - uses: actions/github-script@v6
        if: github.event_name == 'pull_request'
        env:
          PLAN: "terraform\n${{ steps.plan.outputs.stdout }}"
        with:
          github-token: ${{ secrets.GITHUB_TOKEN }}
          script: |
            // 1. Retrieve existing bot comments for the PR
            const { data: comments } = await github.rest.issues.listComments({
              owner: context.repo.owner,
              repo: context.repo.repo,
              issue_number: context.issue.number,
            })
            const botComment = comments.find(comment => {
              return comment.user.type === 'Bot' && comment.body.includes('Terraform Format and Style')
            })

            // 2. Prepare format of the comment
            const output = `#### Terraform Format and Style 🖌\`${{ steps.fmt.outcome }}\`
            #### Terraform Initialization ⚙️\`${{ steps.init.outcome }}\`
            #### Terraform Validation 🤖\`${{ steps.validate.outcome }}\`
            <details><summary>Validation Output</summary>

            \`\`\`\n
            ${{ steps.validate.outputs.stdout }}
            \`\`\`

            </details>

            *Pusher: @${{ github.actor }}, Working Directory: \`${{ inputs.working_dir }}\`, Workflow: \`${{ github.workflow }}\`*`;

            // 3. If we have a comment, update it, otherwise create a new one
            if (botComment) {
              github.rest.issues.updateComment({
                owner: context.repo.owner,
                repo: context.repo.repo,
                comment_id: botComment.id,
                body: output
              })
            } else {
              github.rest.issues.createComment({
                issue_number: context.issue.number,
                owner: context.repo.owner,
                repo: context.repo.repo,
                body: output
              })
            }

How can I correct the output so that it shows not only successful but also validation errors

[mvbelik]

I also tried to enable wrapper, but it also works if there are no errors

[mvbelik]

It turned out to be done in this way

jobs:
  check_syntax:
    runs-on: ubuntu-latest

    name: Terraform check syntax

    defaults:
      run:
        working-directory: ${{ inputs.working_dir }}

    steps:
      - uses: actions/checkout@v3

      - uses: hashicorp/setup-terraform@v2
        with:
          terraform_wrapper: true

      - name: Terraform fmt
        id: fmt
        run: terraform fmt -check
        continue-on-error: true

      - name: Terraform Init
        id: init
        run: terraform init -input=false

      - name: Terraform Validate
        id: validate
        run: terraform validate -no-color
        continue-on-error: true

      - name: Terraform plan
        id: plan
        continue-on-error: true
        run: terraform plan

      - name: Create output for Validate in pr
        uses: actions/github-script@v6
        if: (steps.validate.outcome == 'failure')
        env:
          PLAN: "terraform\n${{ steps.plan.outputs.stdout }}"
          VALIDATE: "terraform\n${{ steps.validate.outputs.stdout }}"
        with:
          github-token: ${{ secrets.GITHUB_TOKEN }}
          script: |
            // 1. Retrieve existing bot comments for the PR
            const { data: comments } = await github.rest.issues.listComments({
              owner: context.repo.owner,
              repo: context.repo.repo,
              issue_number: context.issue.number,
            })
            const botComment = comments.find(comment => {
              return comment.user.type === 'Bot' && comment.body.includes('Terraform Format and Style')
            })

            // 2. Prepare format of the comment
            const output = `#### Terraform Validation 🤖\`${{ steps.validate.outcome }}\`
            <details><summary>Validation Output</summary>

            \`\`\`\n
            ${{ steps.validate.outputs.stderr }}
            \`\`\`

            </details>

            *Pusher: @${{ github.actor }}, Working Directory: \`${{ inputs.working_dir }}\`*`;

            // 3. If we have a comment, update it, otherwise create a new one
            if (botComment) {
              github.rest.issues.updateComment({
                owner: context.repo.owner,
                repo: context.repo.repo,
                comment_id: botComment.id,
                body: output
              })
            } else {
              github.rest.issues.createComment({
                issue_number: context.issue.number,
                owner: context.repo.owner,
                repo: context.repo.repo,
                body: output
              })
            }

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