Add local spoken passages with Google retrieval and isolated runtime setup

tools/speech-runtime/test_build.py

@@ -0,0 +1,33 @@
+import unittest
+from pathlib import Path
+import build
+import tempfile
+import subprocess
+from unittest.mock import patch
+
+
+class BuildContract(unittest.TestCase):
+    def test_real_git_source_rejects_wrong_revision_and_dirty_checkout(self):
+        with tempfile.TemporaryDirectory() as directory:
+            source = Path(directory)
+            def git(*args):
+                return subprocess.check_output(["git", "-C", str(source), *args], stderr=subprocess.STDOUT).decode().strip()
+            git("init", "--quiet")
+            (source / "source.txt").write_text("fixture")
+            git("add", "source.txt")
+            git("-c", "user.name=karl", "-c", "user.email=fixture@invalid", "commit", "--quiet", "-m", "fixture")
+            with self.assertRaises(ValueError):
+                build.validate_source(source)
+            with patch.object(build, "UPSTREAM", git("rev-parse", "HEAD")):
+                build.validate_source(source)
+                (source / "source.txt").write_text("changed")
+                with self.assertRaises(ValueError):
+                    build.validate_source(source)
+
+    def test_shared_helpers_load_without_running_build_or_downloading(self):
+        self.assertTrue(callable(build.shared_helper("build_runtime.py").bundle_windows_crt))
+        self.assertTrue(callable(build.shared_helper("provision_vulkan.py").provision))
+
+
+if __name__ == "__main__":
+    unittest.main()