Ci quality workflows (#1423)

* Add inference tests

* Clean up

* Rename test graph file

* Add readme for tests

* Separate server fixture

* test file name change

* Assert images are generated

* Clean up comments

* Add __init__.py so tests can run with command line `pytest`

* Fix command line args for pytest

* Loop all samplers/schedulers in test_inference.py

* Ci quality workflows compare (#1)

* Add image comparison tests

* Comparison tests do not pass with empty metadata

* Ensure tests are run in correct order

* Save image files  with test name

* Update tests readme

* Reduce step counts in tests to ~halve runtime

* Ci quality workflows build (#2)

* Add build test github workflow

.github/workflows/test-build.yml

@@ -0,0 +1,31 @@
+name: Build package
+
+#
+# This workflow is a test of the python package build.
+# Install Python dependencies across different Python versions.
+#
+
+on:
+  push:
+    paths:
+      - "requirements.txt"
+      - ".github/workflows/test-build.yml"
+
+jobs:
+  build:
+    name: Build Test
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        python-version: ["3.8", "3.9", "3.10", "3.11"]
+    steps:
+      - uses: actions/checkout@v2
+      - name: Set up Python ${{ matrix.python-version }}
+        uses: actions/setup-python@v2
+        with:
+          python-version: ${{ matrix.python-version }}
+      - name: Install dependencies
+        run: |
+          python -m pip install --upgrade pip
+          pip install -r requirements.txt