Add tests fetcher (#5848)

* add tests fetcher to utils

* add test fetcher

* update

* update

* remove unused dependency version check script

* update

* fix mistake

* update

* update

* update

* update

* update

* update

* update

* remove concurrency params

* update

* update

* update

* update

* update

* update

* move test fetcher to dedicated workflow

.github/workflows/pr_test_fetcher.yml

+name: Fast tests for PRs
+
+on:
+  pull_request:
+    branches:
+      - main
+  push:
+    branches:
+      - ci-*
+
+env:
+  DIFFUSERS_IS_CI: yes
+  OMP_NUM_THREADS: 4
+  MKL_NUM_THREADS: 4
+  PYTEST_TIMEOUT: 60
+
+jobs:
+  setup_pr_tests:
+    name: Setup PR Tests
+    runs-on: docker-cpu
+    container:
+      image: diffusers/diffusers-pytorch-cpu
+      options: --shm-size "16gb" --ipc host -v /mnt/hf_cache:/mnt/cache/
+    defaults:
+      run:
+        shell: bash
+    outputs:
+      matrix: ${{ steps.set_matrix.outputs.matrix }}
+      test_map: ${{ steps.set_matrix.outputs.test_map }}
+    steps:
+    - name: Checkout diffusers
+      uses: actions/checkout@v3
+      with:
+        fetch-depth: 2
+    - name: Install dependencies
+      run: |
+        apt-get update && apt-get install libsndfile1-dev libgl1 -y
+        python -m pip install -e .
+    - name: Environment
+      run: |
+        python utils/print_env.py
+    - name: Fetch Tests
+      run: |
+        python utils/tests_fetcher.py | tee test_preparation.txt
+    - name: Report fetched tests
+      uses: actions/upload-artifact@v3
+      with:
+        name: test_fetched
+        path: test_preparation.txt
+    - id: set_matrix
+      name: Create Test Matrix
+      # The `keys` is used as GitHub actions matrix for jobs, i.e. `models`, `pipelines`, etc.
+      # The `test_map` is used to get the actual identified test files under each key.
+      # If no test to run (so no `test_map.json` file), create a dummy map (empty matrix will fail)
+      run: |
+        if [ -f test_map.json ]; then
+            keys=$(python3 -c 'import json; fp = open("test_map.json"); test_map = json.load(fp); fp.close(); d = list(test_map.keys()); print(json.dumps(d))')
+            test_map=$(python3 -c 'import json; fp = open("test_map.json"); test_map = json.load(fp); fp.close(); print(json.dumps(test_map))')
+        else
+            keys=$(python3 -c 'keys = ["dummy"]; print(keys)')
+            test_map=$(python3 -c 'test_map = {"dummy": []}; print(test_map)')
+        fi
+        echo $keys
+        echo $test_map
+        echo "matrix=$keys" >> $GITHUB_OUTPUT
+        echo "test_map=$test_map" >> $GITHUB_OUTPUT
+
+  run_pr_tests:
+    name: Run PR Tests
+    needs: setup_pr_tests
+    if: contains(fromJson(needs.setup_pr_tests.outputs.matrix), 'dummy') != true
+    strategy:
+      fail-fast: false
+      max-parallel: 2
+      matrix:
+        modules: ${{ fromJson(needs.setup_pr_tests.outputs.matrix) }}
+    runs-on: docker-cpu
+    container:
+      image: diffusers/diffusers-pytorch-cpu
+      options: --shm-size "16gb" --ipc host -v /mnt/hf_cache:/mnt/cache/
+    defaults:
+      run:
+        shell: bash
+    steps:
+    - name: Checkout diffusers
+      uses: actions/checkout@v3
+      with:
+        fetch-depth: 2
+
+    - name: Install dependencies
+      run: |
+        apt-get update && apt-get install libsndfile1-dev libgl1 -y
+        python -m pip install -e .[quality,test]
+        python -m pip install accelerate
+
+    - name: Environment
+      run: |
+        python utils/print_env.py
+
+    - name: Run all selected tests on CPU
+      run: |
+        python -m pytest -n 2 --dist=loadfile -v --make-reports=${{ matrix.modules }}_tests_cpu ${{ fromJson(needs.setup_pr_tests.outputs.test_map)[matrix.modules] }}
+
+    - name: Failure short reports
+      if: ${{ failure() }}
+      continue-on-error: true
+      run: |
+        cat reports/${{ matrix.modules }}_tests_cpu_stats.txt
+        cat reports/${{ matrix.modules }}_tests_cpu/failures_short.txt
+
+    - name: Test suite reports artifacts
+      if: ${{ always() }}
+      uses: actions/upload-artifact@v3
+      with:
+          name: ${{ matrix.modules }}_test_reports
+          path: reports
+
+  run_staging_tests:
+    strategy:
+      fail-fast: false
+      matrix:
+        config:
+          - name: Hub tests for models, schedulers, and pipelines
+            framework: hub_tests_pytorch
+            runner: docker-cpu
+            image: diffusers/diffusers-pytorch-cpu
+            report: torch_hub
+
+    name: ${{ matrix.config.name }}
+    runs-on: ${{ matrix.config.runner }}
+    container:
+      image: ${{ matrix.config.image }}
+      options: --shm-size "16gb" --ipc host -v /mnt/hf_cache:/mnt/cache/
+
+    defaults:
+      run:
+        shell: bash
+
+    steps:
+    - name: Checkout diffusers
+      uses: actions/checkout@v3
+      with:
+        fetch-depth: 2
+
+    - name: Install dependencies
+      run: |
+        apt-get update && apt-get install libsndfile1-dev libgl1 -y
+        python -m pip install -e .[quality,test]
+
+    - name: Environment
+      run: |
+        python utils/print_env.py
+
+    - name: Run Hub tests for models, schedulers, and pipelines on a staging env
+      if: ${{ matrix.config.framework == 'hub_tests_pytorch' }}
+      run: |
+        HUGGINGFACE_CO_STAGING=true python -m pytest \
+          -m "is_staging_test" \
+          --make-reports=tests_${{ matrix.config.report }} \
+          tests
+
+    - name: Failure short reports
+      if: ${{ failure() }}
+      run: cat reports/tests_${{ matrix.config.report }}_failures_short.txt
+
+    - name: Test suite reports artifacts
+      if: ${{ always() }}
+      uses: actions/upload-artifact@v2
+      with:
+        name: pr_${{ matrix.config.report }}_test_reports
+        path: reports