2 # Copyright (c) 2017 Google, Inc
3 # Written by Simon Glass <sjg@chromium.org>
5 # SPDX-License-Identifier: GPL-2.0+
7 # Test for the elf module
9 from contextlib import contextmanager
15 from StringIO import StringIO
17 from io import StringIO
21 binman_dir = os.path.dirname(os.path.realpath(sys.argv[0]))
23 # Use this to suppress stdout/stderr output:
24 # with capture_sys_output() as (stdout, stderr)
27 def capture_sys_output():
28 capture_out, capture_err = StringIO(), StringIO()
29 old_out, old_err = sys.stdout, sys.stderr
31 sys.stdout, sys.stderr = capture_out, capture_err
32 yield capture_out, capture_err
34 sys.stdout, sys.stderr = old_out, old_err
38 def __init__(self, contents_size):
39 self.contents_size = contents_size
40 self.data = 'a' * contents_size
46 def __init__(self, sym_value=1):
47 self.sym_value = sym_value
52 def LookupSymbol(self, name, weak, msg):
55 class TestElf(unittest.TestCase):
56 def testAllSymbols(self):
57 fname = os.path.join(binman_dir, 'test', 'u_boot_ucode_ptr')
58 syms = elf.GetSymbols(fname, [])
59 self.assertIn('.ucode', syms)
61 def testRegexSymbols(self):
62 fname = os.path.join(binman_dir, 'test', 'u_boot_ucode_ptr')
63 syms = elf.GetSymbols(fname, ['ucode'])
64 self.assertIn('.ucode', syms)
65 syms = elf.GetSymbols(fname, ['missing'])
66 self.assertNotIn('.ucode', syms)
67 syms = elf.GetSymbols(fname, ['missing', 'ucode'])
68 self.assertIn('.ucode', syms)
70 def testMissingFile(self):
73 with self.assertRaises(ValueError) as e:
74 syms = elf.LookupAndWriteSymbols('missing-file', entry, image)
75 self.assertIn("Filename 'missing-file' not found in input path",
78 def testOutsideFile(self):
81 elf_fname = os.path.join(binman_dir, 'test', 'u_boot_binman_syms')
82 with self.assertRaises(ValueError) as e:
83 syms = elf.LookupAndWriteSymbols(elf_fname, entry, image)
84 self.assertIn('entry_path has offset 4 (size 8) but the contents size '
85 'is a', str(e.exception))
87 def testMissingImageStart(self):
90 elf_fname = os.path.join(binman_dir, 'test', 'u_boot_binman_syms_bad')
91 self.assertEqual(elf.LookupAndWriteSymbols(elf_fname, entry, image),
94 def testBadSymbolSize(self):
97 elf_fname = os.path.join(binman_dir, 'test', 'u_boot_binman_syms_size')
98 with self.assertRaises(ValueError) as e:
99 syms = elf.LookupAndWriteSymbols(elf_fname, entry, image)
100 self.assertIn('has size 1: only 4 and 8 are supported',
103 def testNoValue(self):
104 entry = FakeEntry(20)
105 image = FakeImage(sym_value=None)
106 elf_fname = os.path.join(binman_dir, 'test', 'u_boot_binman_syms')
107 syms = elf.LookupAndWriteSymbols(elf_fname, entry, image)
108 self.assertEqual(chr(255) * 16 + 'a' * 4, entry.data)
112 entry = FakeEntry(20)
114 elf_fname = os.path.join(binman_dir, 'test', 'u_boot_binman_syms')
115 with capture_sys_output() as (stdout, stderr):
116 syms = elf.LookupAndWriteSymbols(elf_fname, entry, image)
118 self.assertTrue(len(stdout.getvalue()) > 0)
121 if __name__ == '__main__':