Improve packaging

.gitignore

 /build/*
-/test_package/build/*
\ No newline at end of file
+/test_package/build/*
+*.pyc
\ No newline at end of file

conanfile.py

@@ -13,7 +13,7 @@ class Pybind11(ConanFile):
     settings = "os", "compiler", "build_type", "arch"
     options = {"shared": [True, False], "fPIC": [
         True, False], "build_tests": [True, False]}
-    default_options = "shared=False", "fPIC=True", "build_tests=True"
+    default_options = "shared=False", "fPIC=True", "build_tests=False"
     generators = "cmake"
 
     def configure(self):
@@ -30,6 +30,8 @@ class Pybind11(ConanFile):
 
         if not self.options.build_tests:
             cmake.definitions["BUILD_TESTING"] = "OFF"
+        else:
+            cmake.definitions["DOWNLOAD_CATCH"] = "ON"
 
         cmake.configure()
         return cmake
@@ -39,7 +41,7 @@ class Pybind11(ConanFile):
         cmake.build()
 
         if self.options.build_tests:
-            cmake.test()
+            cmake.build(target="check")
 
     def package(self):
         cmake = self.get_cmake_config()

test_package/CMakeLists.txt

@@ -4,11 +4,16 @@ cmake_minimum_required(VERSION 2.8.12)
 include(${CMAKE_BINARY_DIR}/conanbuildinfo.cmake)
 conan_basic_setup(TARGETS)
 
-add_executable(test_package test_package.cpp)
-target_link_libraries(test_package PRIVATE CONAN_PKG::pybind11)
+find_package(PythonLibs REQUIRED)
+
+add_library(test_package MODULE test_package.cpp)
+target_include_directories(test_package PRIVATE ${PYTHON_INCLUDE_DIRS})
+target_link_libraries(test_package PRIVATE CONAN_PKG::pybind11 ${PYTHON_LIBRARIES})
 target_compile_features(test_package PRIVATE cxx_std_17)
+# set_target_properties(test_package PROPERTIES PREFIX "${PYTHON_MODULE_PREFIX}"
+#                                               SUFFIX "${PYTHON_MODULE_EXTENSION}")
 
 enable_testing()
-add_test(NAME test_package
+add_test(NAME test_package_py
          WORKING_DIRECTORY ${CMAKE_BINARY_DIR}/bin
-         COMMAND test_package)
+         COMMAND $(PYTHON_PREFIX) test_package.py)
\ No newline at end of file

test_package/conanfile.py

@@ -19,5 +19,6 @@ class BenchmarkTestConan(ConanFile):
 
     def test(self):
         if not tools.cross_building(self.settings):
-            os.chdir("bin")
-            self.run(".%stest_package" % os.sep)
+            os.chdir("lib")
+            self.run("python3 ..%s..%s..%stest_package.py" %
+                     (os.sep, os.sep, os.sep))

test_package/test_package.cpp

 #include <pybind11/pybind11.h>
 
-namespace py = pybind11;
 
-int main()
+int add(int i, int j)
 {
-  return 0;
+  return i + j;
+}
+
+PYBIND11_MODULE(test_package, m)
+{
+  m.doc() = R"pbdoc(
+        Pybind11 example plugin
+        -----------------------
+        .. currentmodule:: test_package
+        .. autosummary::
+           :toctree: _generate
+           add
+           subtract
+    )pbdoc";
+
+  m.def("add", &add, R"pbdoc(
+        Add two numbers
+        Some other explanation about the add function.
+    )pbdoc");
+
+  m.def("subtract", [](int i, int j) { return i - j; }, R"pbdoc(
+        Subtract two numbers
+        Some other explanation about the subtract function.
+    )pbdoc");
+
+#ifdef VERSION_INFO
+  m.attr("__version__") = VERSION_INFO;
+#else
+  m.attr("__version__") = "dev";
+#endif
 }

test_package/test_package.py

+import unittest
+
+
+class TestPackage(unittest.TestCase):
+    def test_add(self):
+        import test_package
+        print(test_package.__doc__)
+
+        self.assertEqual(test_package.add(1, 2), 3)
+
+    def test_substract(self):
+        import test_package
+
+        self.assertEqual(test_package.substract(2, 1), 1)
+
+
+if __name__ == "__main__":
+    unittest.main()