# Cross-platform GPU-offload validation smoke (no GPU required).
#
# Reproduces the silent CPU-only GGUF bug (#5807 / #5106 / #5830) with a fake
# llama-server that "starts and serves HTTP 200" while its log reports CPU-only
# or GPU offload, and asserts install_llama_prebuilt.py --smoke-test rejects the
# CPU-only-tagged-GPU case (exit 2) and accepts the GPU case (exit 0). Runs on
# GPU-less Windows / macOS / Linux runners, which is why this regressed
# untested. Also runs the pure-Python selection + classifier unit tests.

name: Studio GPU Offload Smoke

on:
  pull_request:
    paths:
      - 'studio/install_llama_prebuilt.py'
      - 'studio/setup.sh'
      - 'studio/setup.ps1'
      - 'studio/backend/core/inference/llama_cpp.py'
      - 'tests/studio/install/**'
      - 'tests/sh/test_llama_gpu_smoke.sh'
      - '.github/workflows/studio-gpu-offload-smoke.yml'
  push:
    branches: [main, pip]
  workflow_dispatch:

concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true

permissions:
  contents: read

jobs:
  gpu-offload-spoof:
    name: GPU-offload spoof (${{ matrix.os }})
    runs-on: ${{ matrix.os }}
    timeout-minutes: 15
    strategy:
      fail-fast: false
      matrix:
        os: [ubuntu-latest, windows-latest, macos-latest]
    steps:
      - uses: actions/checkout@v4

      - uses: actions/setup-python@v5
        with:
          python-version: '3.11'

      - name: Install pytest
        run: python -m pip install --upgrade pip pytest

      - name: GPU-offload spoof (end to end, real subprocess + HTTP)
        run: python tests/studio/install/run_smoke_spoof.py

      - name: Selection + classifier unit tests
        run: >
          python -m pytest
          tests/studio/install/test_validate_server_gpu_offload.py
          tests/studio/install/test_selection_logic.py
          tests/studio/install/test_gpu_offload_spoof.py
          -q

      - name: setup.sh smoke-exit classifier (POSIX)
        if: runner.os != 'Windows'
        run: bash tests/sh/test_llama_gpu_smoke.sh