tests: build a minimal project with each interpreter

Author: mayeut

tests/forty-two/forty-two.c

@@ -0,0 +1,20 @@
+#include <Python.h>
+
+static PyObject * answer(PyObject *self, PyObject *args)
+{
+    return PyLong_FromLong(42);
+}
+
+/* Module initialization */
+static PyMethodDef module_methods[] = {
+    {"answer", (PyCFunction)answer, METH_NOARGS, "The answer."},
+    {NULL}  /* Sentinel */
+};
+
+PyMODINIT_FUNC PyInit_forty_two(void)
+{
+    static struct PyModuleDef moduledef = {
+        PyModuleDef_HEAD_INIT, "forty_two", "The answer module", -1, module_methods,
+    };
+    return PyModule_Create(&moduledef);
+}

tests/forty-two/pyproject.toml

@@ -0,0 +1,3 @@
+[build-system]
+requires = ["setuptools"]
+build-backend = "setuptools.build_meta"

tests/forty-two/setup.py

@@ -0,0 +1,8 @@
+from setuptools import setup, Extension
+
+setup(
+    name="forty_two",
+    version="0.1.0",
+    python_requires=">=3.6",
+    ext_modules=[Extension("forty_two", sources=["forty-two.c"])],
+)

tests/run_tests.sh

@@ -40,6 +40,29 @@ for PYTHON in /opt/python/*/bin/python; do
 	LINK_VERSION=$(${LINK_PREFIX}${PYVERS} -V)
 	REAL_VERSION=$(${PYTHON} -V)
 	test "${LINK_VERSION}" = "${REAL_VERSION}"
+
+	# check a simple project can be built
+	SRC_DIR=/tmp/forty-two-${IMPLEMENTATION}${PYVERS}
+	DIST_DIR=/tmp/dist-${IMPLEMENTATION}${PYVERS}
+	cp -rf ${MY_DIR}/forty-two ${SRC_DIR}
+	PY_ABI_TAGS=$(basename $(dirname $(dirname $PYTHON)))
+	EXPECTED_WHEEL_NAME=forty_two-0.1.0-${PY_ABI_TAGS}-linux_${AUDITWHEEL_ARCH}.whl
+	${PYTHON} -m build -w -o ${DIST_DIR} ${SRC_DIR}
+	if [ ! -f ${DIST_DIR}/${EXPECTED_WHEEL_NAME} ]; then
+		echo "unexcpected wheel built: '$(basename $(find ${DIST_DIR} -name '*.whl'))' instead  of '${EXPECTED_WHEEL_NAME}'"
+		exit 1
+	fi
+	auditwheel repair --only-plat -w ${DIST_DIR} ${DIST_DIR}/${EXPECTED_WHEEL_NAME}
+	REPAIRED_WHEEL=$(find ${DIST_DIR} -name "forty_two-0.1.0-${PY_ABI_TAGS}-*${AUDITWHEEL_POLICY}_${AUDITWHEEL_ARCH}*.whl")
+	if [ ! -f "${REPAIRED_WHEEL}" ]; then
+		echo "invalid repaired wheel name"
+		exit 1
+	fi
+	${PYTHON} -m pip install ${REPAIRED_WHEEL}
+	if [ "$(${PYTHON} -c 'import forty_two; print(forty_two.answer())')" != "42" ]; then
+		echo "invalid answer, expecting 42"
+		exit 1
+	fi
 done
 
 # minimal tests for tools that should be present