Own canonical offline private Go module build tooling

Authored-By: Codex (GPT-6) <noreply@openai.com>
2026-09-07 14:52:03 +00:00
parent b2540dcac2
commit 320cab62a0
7 changed files with 626 additions and 0 deletions
@@ -0,0 +1,48 @@
+import importlib.util
+import pathlib
+import subprocess
+import tempfile
+import unittest
+
+ROOT = pathlib.Path(__file__).resolve().parents[1]
+SPEC = importlib.util.spec_from_file_location("exporter", ROOT / "tools/export-private-modules.py")
+MODULE = importlib.util.module_from_spec(SPEC)
+SPEC.loader.exec_module(MODULE)
+
+
+class ExportTest(unittest.TestCase):
+    def test_committed_bytes_and_provenance_are_exact(self):
+        with tempfile.TemporaryDirectory() as temporary:
+            base = pathlib.Path(temporary)
+            source, target = base / "source", base / "target"
+            source.mkdir()
+            target.mkdir()
+            subprocess.run(["git", "init", "-q", str(source)], check=True)
+            for path in MODULE.FILES:
+                file = source / path
+                file.parent.mkdir(parents=True, exist_ok=True)
+                file.write_text("package main\n")
+            subprocess.run(["git", "-C", str(source), "add", "."], check=True)
+            subprocess.run(["git", "-C", str(source), "-c", "user.name=Fixture",
+                            "-c", "user.email=fixture@example.invalid", "commit", "-qm", "fixture"], check=True)
+            revision = MODULE.committed(source, "rev-parse", "HEAD").decode().strip()
+            (source / next(iter(MODULE.FILES))).write_text("dirty worktree must be ignored")
+            MODULE.export(source, target, revision)
+            MODULE.export(source, target, revision, True)
+            subprocess.run(["sha256sum", "-c", "tools/private-modules.sha256"],
+                           cwd=target, check=True, stdout=subprocess.DEVNULL)
+            destination = target / "tools/private-modules.go"
+            self.assertEqual(destination.read_text(), "package main\n")
+            destination.write_text("changed")
+            with self.assertRaises(ValueError):
+                MODULE.export(source, target, revision, True)
+            destination.unlink()
+            destination.symlink_to(source / next(iter(MODULE.FILES)))
+            with self.assertRaises(ValueError):
+                MODULE.export(source, target, revision)
+            with self.assertRaises(ValueError):
+                MODULE.export(source, target, "HEAD")
+
+
+if __name__ == "__main__":
+    unittest.main()