tests: add tests for output

Signed-off-by: Henry Schreiner <[email protected]>

Author: henryiii

Diff for: CMakeLists.txt

@@ -327,6 +327,8 @@ if(PYBIND11_INSTALL)
   install(FILES "${CMAKE_CURRENT_BINARY_DIR}/pybind11.pc"
           DESTINATION "${CMAKE_INSTALL_DATAROOTDIR}/pkgconfig/")
 
+  # When building a wheel, include __init__.py's for modules
+  # (see https://github.com/pybind/pybind11/pull/5552)
   if(DEFINED SKBUILD_PROJECT_NAME AND SKBUILD_PROJECT_NAME STREQUAL "pybind11")
     file(MAKE_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}/empty")
     file(TOUCH "${CMAKE_CURRENT_BINARY_DIR}/empty/__init__.py")

Diff for: noxfile.py

@@ -116,6 +116,9 @@ def build(session: nox.Session) -> None:
 
 @contextlib.contextmanager
 def preserve_file(filename: Path) -> Generator[str, None, None]:
+    """
+    Causes a file to be stored and preserved when the context manager exits.
+    """
     old_stat = filename.stat()
     old_file = filename.read_text(encoding="utf-8")
     try:

Diff for: tests/extra_python_package/test_files.py

@@ -230,11 +230,24 @@ def tests_build_wheel(monkeypatch, tmpdir):
 
     with zipfile.ZipFile(str(wheel)) as z:
         names = z.namelist()
+        share = zipfile.Path(z, "pybind11/share")
+        pkgconfig = (share / "pkgconfig/pybind11.pc").read_text(encoding="utf-8")
+        cmakeconfig = (share / "cmake/pybind11/pybind11Config.cmake").read_text(
+            encoding="utf-8"
+        )
 
     trimmed = {n for n in names if "dist-info" not in n}
     trimmed |= {f"dist-info/{n.split('/', 1)[-1]}" for n in names if "dist-info" in n}
+
     assert files == trimmed
 
+    assert 'set(pybind11_INCLUDE_DIR "${PACKAGE_PREFIX_DIR}/include")' in cmakeconfig
+
+    version = wheel.basename.split("-")[1]
+    simple_version = ".".join(version.split(".")[:3])
+    pkgconfig_expected = PKGCONFIG.format(VERSION=simple_version)
+    assert pkgconfig_expected == pkgconfig
+
 
 def tests_build_global_wheel(monkeypatch, tmpdir):
     monkeypatch.chdir(MAIN_DIR)
@@ -258,8 +271,21 @@ def tests_build_global_wheel(monkeypatch, tmpdir):
 
     with zipfile.ZipFile(str(wheel)) as z:
         names = z.namelist()
+        beginning = names[0].split("/", 1)[0].rsplit(".", 1)[0]
+
+        share = zipfile.Path(z, f"{beginning}.data/data/share")
+        pkgconfig = (share / "pkgconfig/pybind11.pc").read_text(encoding="utf-8")
+        cmakeconfig = (share / "cmake/pybind11/pybind11Config.cmake").read_text(
+            encoding="utf-8"
+        )
 
-    beginning = names[0].split("/", 1)[0].rsplit(".", 1)[0]
     trimmed = {n[len(beginning) + 1 :] for n in names}
 
     assert files == trimmed
+
+    assert 'set(pybind11_INCLUDE_DIR "${PACKAGE_PREFIX_DIR}/include")' in cmakeconfig
+
+    version = wheel.basename.split("-")[1]
+    simple_version = ".".join(version.split(".")[:3])
+    pkgconfig_expected = PKGCONFIG.format(VERSION=simple_version)
+    assert pkgconfig_expected == pkgconfig