Merge "Add test for empty stub generation."
diff --git a/cc/ndkstubgen/test_ndkstubgen.py b/cc/ndkstubgen/test_ndkstubgen.py
index 09551ea..c8cd056 100755
--- a/cc/ndkstubgen/test_ndkstubgen.py
+++ b/cc/ndkstubgen/test_ndkstubgen.py
@@ -413,6 +413,40 @@
""")
self.assertEqual(expected_version, version_file.getvalue())
+ def test_empty_stub(self) -> None:
+ """Tests that empty stubs can be generated.
+
+ This is not a common case, but libraries whose only behavior is to
+ interpose symbols to alter existing behavior do not need to expose
+ their interposing symbols as API, so it's possible for the stub to be
+ empty while still needing a stub to link against. libsigchain is an
+ example of this.
+ """
+ input_file = io.StringIO(textwrap.dedent("""\
+ VERSION_1 {
+ local:
+ *;
+ };
+ """))
+ parser = symbolfile.SymbolFileParser(input_file, {}, Arch('arm'),
+ 9, llndk=False, apex=True)
+ versions = parser.parse()
+
+ src_file = io.StringIO()
+ version_file = io.StringIO()
+ symbol_list_file = io.StringIO()
+ generator = ndkstubgen.Generator(src_file,
+ version_file,
+ symbol_list_file,
+ Arch('arm'),
+ 9,
+ llndk=False,
+ apex=True)
+ generator.write(versions)
+
+ self.assertEqual('', src_file.getvalue())
+ self.assertEqual('', version_file.getvalue())
+
def main() -> None:
suite = unittest.TestLoader().loadTestsFromName(__name__)
