try workflow for testing

.github/workflows/main.yml

@@ -23,31 +23,42 @@ jobs:
           path: .
           fetch-depth: 0  # avoid shallow clone with no tags
 
-      - name: Install Mamba
-        run: |
-          wget "https://github.com/conda-forge/miniforge/releases/latest/download/Mambaforge-Linux-x86_64.sh" -O mambaforge.sh
-          bash mambaforge.sh -b -p $HOME/mambaforge
-          echo "$HOME/mambaforge/bin" >> $GITHUB_PATH
-          source $HOME/mambaforge/etc/profile.d/conda.sh
-          conda init bash
+      - name: initialize miniconda
+        # this uses a marketplace action that sets up miniconda in a way that makes
+        # it easier to use.  I tried setting it up without this and it was a pain
+        uses: conda-incubator/setup-miniconda@v2
+        with:
+          activate-environment: test
+          # environment.yml file is needed by this action.  Because I don't want
+          # maintain this but rather maintain the requirements files it just has
+          # basic things in it like conda and pip
+          environment-file: ./environment.yml
+          python-version: 3
+          auto-activate-base: false
 
-      - name: Create conda environment
+      - name: install diffpy.pdfgui requirements
+        shell: bash -l {0}
         run: |
-          source $HOME/mambaforge/etc/profile.d/conda.sh
-          conda create -n test_env python=3.12 xonsh regolith -c conda-forge -y
-          conda activate test_env
-          pip install case_insensitive_dict
+          conda config --set always_yes yes --set changeps1 no
+          conda config --add channels conda-forge
+          conda activate test
+          conda install --file requirements/run.txt
+          conda install --file requirements/test.txt
+          pip install .
+
+      - name: Install Xvfb
+        run: sudo apt-get install -y xvfb
 
-      - name: Install dependencies
+      - name: Start Xvfb
         run: |
-          source $HOME/mambaforge/etc/profile.d/conda.sh
-          conda activate test_env
-          mamba install --file requirements/run.txt
-          mamba install --file requirements/test.txt
-          pip install -e .
+          export DISPLAY=:99
+          Xvfb :99 -screen 0 1024x768x16 &
 
-      - name: Use Xvfb Action
-        uses: GabrielBB/xvfb-action@v1
-        with:
-          run: |
-            bash -c "source $HOME/mambaforge/etc/profile.d/conda.sh && conda activate test_env && python -m run_tests.py"
+      - name: Validate diffpy.pdfgui
+        shell: bash -l {0}
+        run: |
+          export DISPLAY=:99
+          conda activate test
+          coverage run -m pytest -vv -s
+          coverage report -m
+          codecov

src/diffpy/pdfgui/tests/conftest.py

@@ -1,9 +1,14 @@
 import json
+import subprocess
 from pathlib import Path
 
 import pytest
 
 
+def pytest_collection_modifyitems(session, config, items):
+    subprocess.run(["python", "-m", "diffpy.pdfgui.tests.rundeps"], check=True)
+
+
 @pytest.fixture
 def user_filesystem(tmp_path):
     base_dir = Path(tmp_path)