Tests

.github/workflows/tests.yml

@@ -0,0 +1,48 @@
+name: Tests
+
+on:
+  push:
+    branches: [ main ]
+  pull_request:
+
+jobs:
+  test_pyenv:
+    runs-on: ubuntu-latest
+    name: Test with pyenv
+    steps:
+      - name: Install python build tools
+        # Ref: https://github.com/pyenv/pyenv/wiki#suggested-build-environment
+        run: |
+          sudo apt-get update -y
+          sudo apt-get install -y make build-essential libssl-dev zlib1g-dev \
+          libbz2-dev libreadline-dev libsqlite3-dev wget curl llvm \
+          libncursesw5-dev xz-utils libxml2-dev libxmlsec1-dev libffi-dev liblzma-dev
+      - name: Install pyenv
+        run: |
+          git clone https://github.com/pyenv/pyenv.git "$HOME/.pyenv"
+          PYENV_ROOT="$HOME/.pyenv"
+          PYENV_BIN="$PYENV_ROOT/bin"
+          echo "$PYENV_BIN" >> $GITHUB_PATH
+          echo "PYENV_ROOT=$PYENV_ROOT" >> $GITHUB_ENV
+      - name: Check pyenv version
+        run: |
+          pyenv --version
+
+      - name: Cache pyenv installed version
+        uses: actions/cache@v4
+        with:
+          path: ~/.pyenv/versions
+          key: ${{ runner.os }}-pyenv-3.11.10-b
+
+      # Doing this beforehand should make the test itself faster
+      - name: Preinstall Python 3.11.10
+        run: |
+          pyenv install -v --skip-existing 3.11.10
+
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Test with pytest
+        run: |
+          python3 -m pip install pytest
+          python3 -m pytest -v

env_cache.py

@@ -34,7 +34,7 @@ def __init__(self, python_exe):
 
     def _get_version(self):
         res = run([self.python_exe, '--version'], check=True, stdout=PIPE)
-        m = re.match("Python\s+(\S+)$", res.stdout.decode('utf-8'))
+        m = re.match(r"Python\s+(\S+)$", res.stdout.decode('utf-8'))
         if not m:
             raise ValueError(
                 f"python --version output ({res.stdout}) not as expected"

test_env_cache.py

@@ -0,0 +1,51 @@
+from shutil import which
+from subprocess import run, PIPE, STDOUT
+import sys
+
+import pytest
+
+from env_cache import (EnvsManager, FixedPythonEnvMaker, PyenvEnvMaker)
+
+@pytest.mark.skipif(sys.version_info.releaselevel != 'final', reason='pre-release Python')
+def test_fixed_python(tmp_path):
+    vi = sys.version_info
+    version = f"{vi.major}.{vi.minor}.{vi.micro}"
+
+    mgr = EnvsManager(tmp_path, FixedPythonEnvMaker(sys.executable))
+    env = mgr.get_env(version, "flit_core==3.10.1")
+    assert env.is_relative_to(tmp_path)
+    env_py = env / 'bin' / 'python'
+    assert env_py.is_file()
+    r = run([env_py, '-c', 'import flit_core'], stdout=PIPE, stderr=STDOUT)
+    if r.stdout:
+        print(r.stdout)
+    assert r.returncode == 0
+
+    # Asking for an env with the same specifications should reuse it
+    env_again = mgr.get_env(version, "flit_core==3.10.1")
+    assert env_again == env
+
+
+def test_fixed_python_wrong_version(tmp_path):
+    mgr = EnvsManager(tmp_path, FixedPythonEnvMaker(sys.executable))
+    # Assume this test will never run on Python 3.2.1
+    with pytest.raises(ValueError, match="not 3.2.1"):
+        mgr.get_env("3.2.1", "")
+
+
+@pytest.mark.skipif(which('pyenv') is None, reason="pyenv not available")
+def test_pyenv(tmp_path):
+    version = "3.11.10"
+    mgr = EnvsManager(tmp_path, PyenvEnvMaker())
+    env = mgr.get_env(version, "flit_core==3.10.1")
+    assert env.is_relative_to(tmp_path)
+    env_py = env / 'bin' / 'python'
+    assert env_py.is_file()
+    r = run([env_py, '-c', 'import flit_core'], stdout=PIPE, stderr=STDOUT)
+    if r.stdout:
+        print(r.stdout)
+    assert r.returncode == 0
+
+    # Asking for an env with the same specifications should reuse it
+    env_again = mgr.get_env(version, "flit_core==3.10.1")
+    assert env_again == env