Refactor testing

.config/dictionary.txt

@@ -13,3 +13,4 @@ minmax
 mkdocs
 pyenv
 ssbarnea
+pypa

.pre-commit-config.yaml

@@ -40,6 +40,8 @@ repos:
     hooks:
       - id: ruff
         args: [--fix, --exit-non-zero-on-fix]
+        additional_dependencies:
+          - pytest
   - repo: https://github.com/psf/black
     rev: 24.8.0
     hooks:
@@ -53,6 +55,7 @@ repos:
         args: [--strict]
         additional_dependencies:
           - actions-toolkit
+          - pytest
   - repo: https://github.com/pycqa/pylint
     rev: v3.2.6
     hooks:
@@ -61,3 +64,4 @@ repos:
           - --output-format=colorized
         additional_dependencies:
           - actions-toolkit
+          - pytest

.vscode/settings.json

@@ -1,3 +1,5 @@
 {
-  "python.formatting.provider": "black"
+  "python.formatting.provider": "black",
+  "editor.defaultFormatter": "charliermarsh.ruff",
+  "editor.formatOnSave": true
 }

cspell.config.yaml

@@ -10,4 +10,5 @@ dictionaries:
   - words
   - python
 ignorePaths:
+  - .vscode/settings.json
   - cspell.config.yaml

entrypoint.py

@@ -1,8 +1,11 @@
 #!env python3
 """Action body."""
+
 import json
 import os
 import re
+from pathlib import Path
+from typing import Any
 
 from actions_toolkit import core
 
@@ -22,14 +25,18 @@
 IMPLICIT_SKIP_EXPLODE = "0"
 
 
-def sort_human(l: list[str]) -> list[str]:
+def sort_human(data: list[str]) -> list[str]:
     """Sort a list using human logic, so 'py39' comes before 'py311'."""
+
     def convert(text: str) -> str | float:
         return float(text) if text.isdigit() else text
-    def alphanum(key):
-        return [convert(c) for c in re.split("([-+]?[0-9]*\\.?[0-9]*)", key)]
-    l.sort(key=alphanum)
-    return l
+
+    def alphanumeric(key: str) -> list[str | float]:
+        return [convert(c) for c in re.split(r"([-+]?\d*\\.?\d*)", key)]
+
+    data.sort(key=alphanumeric)
+    return data
+
 
 def add_job(result: dict[str, dict[str, str]], name: str, data: dict[str, str]) -> None:
     """Adds a new job to the list of generated jobs."""
@@ -40,6 +47,34 @@ def add_job(result: dict[str, dict[str, str]], name: str, data: dict[str, str])
     result[name] = data
 
 
+def get_platforms() -> list[str]:
+    """Retrieve effective list of platforms."""
+    platforms = []
+    for v in core.get_input("platforms", required=False).split(","):
+        platform, run_on = v.split(":") if ":" in v else (v, None)
+        if not platform:
+            continue
+        if run_on:
+            core.debug(
+                f"Add platform '{platform}' with run_on={run_on} to known platforms",
+            )
+            PLATFORM_MAP[platform] = run_on
+        platforms.append(platform)
+    return platforms
+
+
+def produce_output(output: dict[str, Any]) -> None:
+    """Produce the output."""
+    if "TEST_GITHUB_OUTPUT_JSON" in os.environ:
+        with Path(os.environ["TEST_GITHUB_OUTPUT_JSON"]).open(
+            "w",
+            encoding="utf-8",
+        ) as f:
+            json.dump(output, f)
+    for key, value in output.items():
+        core.set_output(key, value)
+
+
 # loop list staring with given item
 # pylint: disable=too-many-locals,too-many-branches
 def main() -> None:  # noqa: C901,PLR0912
@@ -50,12 +85,14 @@ def main() -> None:  # noqa: C901,PLR0912
             core.info(f"Env var {k}={v}")
     try:
         other_names = core.get_input("other_names", required=False).split("\n")
-        platforms = core.get_input("platforms", required=False).split(",")
+        platforms = get_platforms()
+
         min_python = core.get_input("min_python") or IMPLICIT_MIN_PYTHON
         max_python = core.get_input("max_python") or IMPLICIT_MAX_PYTHON
         default_python = core.get_input("default_python") or IMPLICIT_DEFAULT_PYTHON
         skip_explode = int(core.get_input("skip_explode") or IMPLICIT_SKIP_EXPLODE)
         strategies = {}
+
         for platform in PLATFORM_MAP:
             strategies[platform] = core.get_input(platform, required=False)
 
@@ -102,7 +139,7 @@ def main() -> None:  # noqa: C901,PLR0912
         if not skip_explode:
             for platform in platforms:
                 for i, python in enumerate(python_names):
-                    py_name = re.sub(r"[^0-9]", "", python.strip("."))
+                    py_name = re.sub(r"\D", "", python.strip("."))
                     suffix = "" if platform == IMPLICIT_PLATFORM else f"-{platform}"
                     if strategies[platform] == "minmax" and (
                         i not in (0, python_flavours - 1)
@@ -129,26 +166,13 @@ def main() -> None:  # noqa: C901,PLR0912
         core.info(
             f"Matrix jobs ordered by their name: {json.dumps(matrix_include, indent=2)}",
         )
-
-        core.set_output("matrix", {"include": matrix_include})
+        output = {"matrix": {"include": matrix_include}}
+        produce_output(output)
 
     # pylint: disable=broad-exception-caught
     except Exception as exc:  # noqa: BLE001
         core.set_failed(f"Action failed due to {exc}")
 
 
 if __name__ == "__main__":
-    # only used for local testing, emulating use from github actions
-    if os.getenv("GITHUB_ACTIONS") is None:
-        os.environ["INPUT_DEFAULT_PYTHON"] = "3.10"
-        os.environ["INPUT_LINUX"] = "full"
-        os.environ["INPUT_MACOS"] = "minmax"
-        os.environ["INPUT_MAX_PYTHON"] = "3.13"
-        os.environ["INPUT_MIN_PYTHON"] = "3.8"
-        os.environ["INPUT_OTHER_NAMES"] = (
-            "lint\npkg\npy313-devel\nall-macos:tox -e unit;tox -e integration"
-        )
-        os.environ["INPUT_PLATFORMS"] = "linux,macos"  # macos and windows
-        os.environ["INPUT_SKIP_EXPLODE"] = "0"
-        os.environ["INPUT_WINDOWS"] = "minmax"
     main()

pyproject.toml

@@ -161,10 +161,15 @@ lint.ignore = [
   "INP001", # "is part of an implicit namespace package", all false positives
   "PLW2901", # PLW2901: Redefined loop variable
   "RET504", # Unnecessary variable assignment before `return` statement
+  "S603", # https://github.com/astral-sh/ruff/issues/4045
+
   # temporary disabled until we fix them:
 ]
 lint.select = ["ALL"]
 
+[tool.ruff.lint.per-file-ignores]
+"tests/**/*.py" = ["SLF001", "S101", "FBT001"]
+
 [tool.ruff.lint.pydocstyle]
 convention = "google"
 

tests/test_action.py

@@ -1,9 +1,69 @@
 """Tests for github action."""
 
+import json
+import os
 import sys
+import tempfile
 from subprocess import run
 
+import pytest
 
-def test_foo() -> None:
+
+@pytest.mark.parametrize(
+    ("passed_env", "expected"),
+    [
+        pytest.param(
+            {
+                "INPUT_DEFAULT_PYTHON": "3.8",
+                "INPUT_LINUX": "full",
+                "INPUT_MACOS": "minmax",
+                "INPUT_MAX_PYTHON": "3.8",
+                "INPUT_MIN_PYTHON": "3.8",
+                "INPUT_OTHER_NAMES": "all-macos:tox -e unit;tox -e integration",
+                "INPUT_PLATFORMS": "linux",
+                "INPUT_SKIP_EXPLODE": "1",
+                "INPUT_WINDOWS": "minmax",
+            },
+            {
+                "matrix": {
+                    "include": [
+                        {
+                            "command": "tox -e unit",
+                            "command2": "tox -e integration",
+                            "name": "all-macos",
+                            "os": "macos-13",
+                            "python_version": "3.8",
+                        },
+                    ],
+                },
+            },
+            id="1",
+        ),
+    ],
+)
+def test_action(passed_env: dict[str, str], expected: dict[str, str]) -> None:
     """Sample test."""
-    run([sys.executable, "entrypoint.py"], check=True, shell=False)  # noqa: S603
+    with tempfile.NamedTemporaryFile(delete=False) as temp_file:
+        env = {
+            **os.environ.copy(),
+            **passed_env,
+            "TEST_GITHUB_OUTPUT_JSON": temp_file.name,
+        }
+
+        result = run(
+            [sys.executable, "entrypoint.py"],
+            text=True,
+            shell=False,
+            check=True,
+            capture_output=True,
+            env=env,
+        )
+        assert result.returncode == 0
+        temp_file.seek(0)
+        effective = temp_file.read().decode("utf-8")
+        data = json.loads(effective)
+        assert isinstance(data, dict), data
+        assert len(data) == 1
+        assert "matrix" in data
+        assert data == expected
+        # TestCase().assertDictEqual(data, expected)