restructured package

Author: benjaminjack

.eggs/README.txt

@@ -0,0 +1,6 @@
+This directory contains eggs that were downloaded by setuptools to build, test, and run plug-ins.
+
+This directory caches those eggs to prevent repeated downloads.
+
+However, it is safe to delete this directory.
+

.eggs/tests-0.7-py3.6.egg

@@ -1,7 +1,7 @@
 cmake_minimum_required(VERSION 2.8.12)
 project(python_cpp_example)
 
-SET(SOURCE_DIR "python_cpp_example")
+SET(SOURCE_DIR "src/python_cpp_example")
 # Tell cmake that headers are in alse in source_dir
 include_directories(${SOURCE_DIR})
 SET(SOURCES "${SOURCE_DIR}/math.cpp")

CMakeLists.txt

@@ -1,3 +1,5 @@
+#! /usr/bin/env python3
+
 import os
 import re
 import sys
@@ -6,9 +8,10 @@
 import subprocess
 
 from distutils.version import LooseVersion
-from setuptools import setup, Extension
+from setuptools import setup, Extension, find_packages
 from setuptools.command.build_ext import build_ext
 from setuptools.command.test import test as TestCommand
+from shutil import copyfile, copymode
 
 
 class CMakeExtension(Extension):
@@ -65,30 +68,29 @@ def build_extension(self, ext):
                               cwd=self.build_temp, env=env)
         subprocess.check_call(['cmake', '--build', '.'] + build_args,
                               cwd=self.build_temp)
+        # Copy *_test file to tests directory
+        test_bin = os.path.join(self.build_temp, 'python_cpp_example_test')
+        self.copy_test_file(test_bin)
         print()  # Add an empty line for cleaner output
 
-class CatchTestCommand(TestCommand):
-    """
-    A custom test runner to execute both python unittest tests and C++ Catch-
-    lib tests.
-    """
-    def distutils_dir_name(self, dname):
-        """Returns the name of a distutils build directory"""
-        dir_name = "{dirname}.{platform}-{version[0]}.{version[1]}"
-        return dir_name.format(dirname=dname,
-                               platform=sysconfig.get_platform(),
-                               version=sys.version_info)
-
-    def run(self):
-        # Run python tests
-        super(CatchTestCommand, self).run()
-        print("\nPython tests complete, now running C++ tests...\n")
-        # Run catch tests
-        subprocess.call(['./*_test'],
-                        cwd=os.path.join('build',
-                                         self.distutils_dir_name('temp')),
-                        shell=True)
+    def copy_test_file(self, src_file):
+        '''
+        Copy ``src_file`` to ``dest_file`` ensuring parent directory exists.
+        By default, message like `creating directory /path/to/package` and
+        `copying directory /src/path/to/package -> path/to/package` are displayed on standard output. Adapted from scikit-build.
+        '''
+        # Create directory if needed
+        dest_dir = os.path.join(os.path.dirname(
+            os.path.abspath(__file__)), 'tests', 'bin')
+        if dest_dir != "" and not os.path.exists(dest_dir):
+            print("creating directory {}".format(dest_dir))
+            os.makedirs(dest_dir)
 
+        # Copy file
+        dest_file = os.path.join(dest_dir, os.path.basename(src_file))
+        print("copying {} -> {}".format(src_file, dest_file))
+        copyfile(src_file, dest_file)
+        copymode(src_file, dest_file)
 
 setup(
     name='python_cpp_example',
@@ -97,7 +99,10 @@ def run(self):
     author_email='benjamin.r.jack@gmail.com',
     description='A hybrid Python/C++ test project',
     long_description='',
-    ext_modules=[CMakeExtension('python_cpp_example')],
-    cmdclass=dict(build_ext=CMakeBuild, test=CatchTestCommand),
+    packages=find_packages('src'),
+    package_dir={'':'src'},
+    ext_modules=[CMakeExtension('python_cpp_example/python_cpp_example')],
+    cmdclass=dict(build_ext=CMakeBuild),
+    test_suite='tests',
     zip_safe=False,
 )

setup.py

@@ -0,0 +1 @@
+from .python_cpp_example import *

src/python_cpp_example/__init__.py

@@ -3,9 +3,8 @@
 
 namespace py = pybind11;
 
-PYBIND11_PLUGIN(python_cpp_example)
-{
-    py::module m("python_cpp_example", R"doc(
+PYBIND11_PLUGIN(python_cpp_example) {
+  py::module m("python_cpp_example", R"doc(
         Python module
         -----------------------
         .. currentmodule:: python_cpp_example
@@ -16,17 +15,17 @@ PYBIND11_PLUGIN(python_cpp_example)
            subtract
     )doc");
 
-    m.def("add", &add, R"doc(
+  m.def("add", &add, R"doc(
         Add two numbers
         
         Some other information about the add function.
     )doc");
 
-    m.def("subtract", &subtract, R"doc(
+  m.def("subtract", &subtract, R"doc(
         Subtract two numbers
 
         Some other information about the subtract function.
     )doc");
 
-    return m.ptr();
+  return m.ptr();
 }

python_cpp_example/bindings.cpp renamed to src/python_cpp_example/bindings.cpp

@@ -0,0 +1,16 @@
+import unittest
+import python_cpp_example
+import subprocess
+import os
+
+
+class MainTest(unittest.TestCase):
+    def test_cpp(self):
+        print("\n\nTesting C++ code...")
+        subprocess.check_call(os.path.join(os.path.dirname(
+            os.path.relpath(__file__)), 'bin', 'python_cpp_example_test'))
+        print()  # for prettier output
+
+
+if __name__ == '__main__':
+    unittest.main()