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

tests/README.md

@@ -0,0 +1,29 @@
+# Automated Testing
+
+## Running tests locally
+
+Additional requirements for running tests:
+```
+pip install pytest
+pip install websocket-client==1.6.1
+opencv-python==4.6.0.66
+scikit-image==0.21.0
+```
+Run inference tests:
+```
+pytest tests/inference
+```
+
+## Quality regression test
+Compares images in 2 directories to ensure they are the same
+
+1) Run an inference test to save a directory of "ground truth" images
+```
+    pytest tests/inference --output_dir tests/inference/baseline
+```
+2) Make code edits
+
+3) Run inference and quality comparison tests
+```
+pytest
+```