Add tests for copy annotations

private/tests/annotations/BUILD.bazel

@@ -42,7 +42,9 @@ py_reqs_solution_test(
 py_test(
     name = "annotations",
     srcs = ["annotations.py"],
-    deps = requirements([
+    deps = [
+        "@rules_python//python/runfiles",
+    ] + requirements([
         "numpy",
         "sphinx",
     ]),

private/tests/annotations/annotations.py

@@ -1,8 +1,11 @@
 """The sdist integration test"""
 
+import platform
 import unittest
+from pathlib import Path
 
 from numpy import __version__ as numpy_version  # pylint: disable=import-error
+from rules_python.python.runfiles import Runfiles  # pylint: disable=import-error
 from sphinx import __version__ as sphinx_version  # pylint: disable=import-error
 
 
@@ -13,6 +16,29 @@ def test_numpy_version(self) -> None:
     def test_sphinx_version(self) -> None:
         assert sphinx_version == "7.2.6"
 
+    def test_copy_annotations(self) -> None:
+        runfiles = Runfiles.Create()
+        assert runfiles, "Failed to locate runfiles"
+
+        expected = [
+            "req_compile_test_annotations_{}__numpy/site-packages/numpy/conftest.copy.py",
+            "req_compile_test_annotations_{}__numpy/site-packages/numpy-1.26.4.dist-info/entry_points.copy.txt",
+            "req_compile_test_annotations_{}__numpy/site-packages/numpy/testing/setup.copy.py",
+        ]
+
+        platforms = {
+            "Darwin": "macos",
+            "Windows": "windows",
+            "Linux": "linux",
+        }
+
+        for rlocationpath in expected:
+            runfile = runfiles.Rlocation(
+                rlocationpath.format(platforms[platform.system()])
+            )
+            assert runfile, f"Failed to find runfile: {rlocationpath}"
+            assert Path(runfile).exists(), f"Runfile does not exist: {rlocationpath}"
+
 
 if __name__ == "__main__":
     unittest.main()

private/tests/annotations/annotations_test_deps.bzl

@@ -38,6 +38,15 @@ def req_compile_test_annotations_deps():
             "numpy": package_annotation(
                 additive_build_file_content = _NUMPY_LIBRARY_TARGET,
                 data = [":pkg.headers"],
+                copy_srcs = {
+                    "site-packages/numpy/conftest.py": "site-packages/numpy/conftest.copy.py",
+                },
+                copy_files = {
+                    "site-packages/numpy-1.26.4.dist-info/entry_points.txt": "site-packages/numpy-1.26.4.dist-info/entry_points.copy.txt",
+                },
+                copy_executables = {
+                    "site-packages/numpy/testing/setup.py": "site-packages/numpy/testing/setup.copy.py",
+                },
             ),
             # Sphinx is known to have a circular dependency. The annotations here solve for that.
             "sphinxcontrib-applehelp": package_annotation(