test checking for empty results

tests/test_example_elfs.py

@@ -19,12 +19,15 @@ def test_simple_c() -> None:
         print(elf.code_relocations)
         print('\n')
 
+        assert elf.sections
         for section in elf.sections:
             assert known_name(section.description), f"Section type {section.type} for {elf.architecture} in {path} is unknown."
 
+        assert elf.symbols
         for sym in elf.symbols:
             assert known_name(sym.info), f"Symbol info {sym.info} for {elf.architecture} in {path} is unknown."
 
+        assert elf.get_relocations()
         for reloc in elf.get_relocations():
             assert known_name(reloc.type), f"Relocation type {reloc.type} for {elf.architecture} in {path} is unknown."