Add shared development execpolicy rules

2026-11-09 20:50:33 +00:00 · 2026-06-22 22:50:37 +00:00
parent 9f06cf1a09
commit 96d6717fc5
6 changed files with 317 additions and 0 deletions
@@ -0,0 +1,87 @@
+#!/usr/bin/env python3
+
+from contextlib import redirect_stdout
+import io
+from pathlib import Path
+import sys
+import unittest
+from unittest.mock import patch
+
+sys.path.insert(0, str(Path(__file__).resolve().parent))
+
+import setup_dev_execpolicy
+
+
+class SetupDevExecpolicyTest(unittest.TestCase):
+    def test_discovers_absolute_paths_without_resolving_them(self) -> None:
+        paths = {
+            "cargo": "/tools/bin/cargo",
+            "just": "/tools/bin/just",
+        }
+
+        self.assertEqual(
+            setup_dev_execpolicy.discover_host_executables(
+                tuple(paths),
+                which=paths.get,
+            ),
+            {
+                "cargo": Path("/tools/bin/cargo"),
+                "just": Path("/tools/bin/just"),
+            },
+        )
+
+    def test_reports_all_missing_executables(self) -> None:
+        with self.assertRaisesRegex(
+            RuntimeError,
+            "missing required host executables on PATH: just, pnpm",
+        ):
+            setup_dev_execpolicy.discover_host_executables(
+                ("cargo", "just", "pnpm"),
+                which=lambda name: "/tools/bin/cargo" if name == "cargo" else None,
+            )
+
+    def test_renders_host_executable_rules(self) -> None:
+        self.assertEqual(
+            setup_dev_execpolicy.render_host_executable_rules(
+                {
+                    "cargo": Path("/tools/bin/cargo"),
+                    "bazel": Path("/tools/bin/bazel"),
+                }
+            ),
+            """# Generated by scripts/setup_dev_execpolicy.py. Do not edit.
+
+host_executable(
+    name = "cargo",
+    paths = ["/tools/bin/cargo"],
+)
+
+host_executable(
+    name = "bazel",
+    paths = ["/tools/bin/bazel"],
+)
+""",
+        )
+
+    def test_main_prints_rules(self) -> None:
+        executables = {"cargo": Path("/tools/bin/cargo")}
+        stdout = io.StringIO()
+
+        with (
+            patch.object(
+                setup_dev_execpolicy,
+                "discover_host_executables",
+                return_value=executables,
+            ),
+            redirect_stdout(stdout),
+        ):
+            result = setup_dev_execpolicy.main()
+
+        self.assertEqual(result, 0)
+        self.assertEqual(
+            stdout.getvalue(),
+            setup_dev_execpolicy.render_host_executable_rules(executables),
+        )
+
+
+if __name__ == "__main__":
+    unittest.main()