add automated testing in github workflow

Author: Xinyue-Yang

.github/workflows/test.yml

@@ -50,7 +50,7 @@ jobs:
       - name: Install dependencies
         run: |
           python -m pip install --upgrade pip
-          pip install hatch
+          pip install hatch pytest pytest-cov
 
       - name: Build and lint Widget
         run: |
@@ -65,6 +65,12 @@ jobs:
           hatch fmt --check
           hatch run test:cov
 
+      - name: Build and test Schema Wrapper
+        run: |
+          cd packages/schema_wrapper
+          pip install -e .
+          pytest test/ --cov=schema_wrapper --cov-report=term-missing
+
   rust:
     name: Test in Rust
 

packages/schema_wrapper/pyproject.toml

@@ -0,0 +1,33 @@
+[build-system]
+requires = ["hatchling"]
+build-backend = "hatchling.build"
+
+[project]
+name = "schema-wrapper"
+version = "0.1.0"
+description = "Schema wrapper classes for Mosaic"
+readme = "README.md"
+requires-python = ">=3.9"
+
+[tool.hatch.build.targets.wheel]
+packages = ["."]  # Changed from "src" to "." since files are in root
+
+[tool.pytest.ini_options]
+testpaths = ["test"]
+python_files = ["test_*.py"]
+addopts = "-v"
+
+[tool.coverage.run]
+source = ["."]
+
+[tool.coverage.report]
+exclude_lines = [
+    "pragma: no cover",
+    "def __repr__",
+    "if __name__ == .__main__.:",
+    "raise NotImplementedError",
+]
+
+[tool.ruff]
+line-length = 88
+target-version = "py39"

packages/schema_wrapper/test/test.py packages/schema_wrapper/test/test_generated_classes.py

@@ -6,7 +6,7 @@
 from pathlib import Path
 import pytest
 
-from packages.schema_wrapper.generated_classes import (
+from ..generated_classes import (
     AggregateExpression,
     AggregateTransform,
     ChannelValue,