WIP: add legacy unit tests

.github/workflows/legacy_unit_tests.yml

@@ -0,0 +1,64 @@
+name: CI
+
+env:
+  python.version: '3.10'
+  python.venv: 'testvenv'
+  # Following env vars when changed will "reset" the mentioned cache,
+  # by changing the cache file name. It is rendered as ...-v%RESET_XXX%-...
+  # You should go up in number, if you go down (or repeat a previous value)
+  # you might end up reusing a previous cache if it hasn't been deleted already.
+  # It applies 7 days retention policy by default.
+  RESET_PIP_CACHE: 0
+  PACKAGE_NAME: PyEDB
+# Controls when the workflow will run
+on:
+  # Triggers the workflow on push or pull request events but only for the main branch
+  push:
+    tags:
+     - 'v*'
+    branches:
+      - main
+  pull_request:
+    branches: [ main ]
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+# A workflow run is made up of one or more jobs that can run sequentially or in parallel
+jobs:
+  # This workflow contains a single job called "build"
+  build_solvers:
+    # The type of runner that the job will run on
+    runs-on: [ windows, pyedb, self-hosted ]
+    strategy:
+      matrix:
+        python-version: [ '3.10' ]
+    # Steps represent a sequence of tasks that will be executed as part of the job
+    steps:
+      - name: "Install Git and clone project"
+        uses: actions/checkout@v4
+        if: ${{ inputs.checkout == 'true' }}
+
+      - name: "Set up Python"
+        uses: ansys/actions/_setup-python@main
+        with:
+          python-version: ${{ inputs.python-version }}
+          use-cache: ${{ inputs.use-python-cache }}
+
+      - name: "Update pip"
+        shell: bash
+        run: python -m pip install -U pip
+
+      - name: "Install Python library"
+        shell: bash
+        run: python -m pip install .
+
+    - name: "Install test requirements"
+      shell: bash
+      run: python -m pip install .[tests]
+
+    - name: "Executing legacy unit tests"
+      shell: bash
+      run: |
+        pytest -n 6 -m "legacy and unit"