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# Copyright (c) Meta Platforms, Inc. and affiliates.
# SPDX-License-Identifier: LGPL-2.1-or-later
import io
from drgn import Program, TypeEnumerator
from drgn.helpers.common.format import (
CellFormat,
RowOptions,
decode_enum_type_flags,
decode_flags,
number_in_binary_units,
print_table,
)
from tests import MOCK_PLATFORM, TestCase
class TestDecodeFlags(TestCase):
FLAGS_BIT_NUMBERS = (("BOLD", 0), ("ITALIC", 1), ("UNDERLINE", 2))
FLAGS_VALUES = tuple(
(name, 1 << bit_number) for name, bit_number in FLAGS_BIT_NUMBERS
)
def assertDecodeFlags(self, value, expected):
self.assertEqual(decode_flags(value, self.FLAGS_BIT_NUMBERS), expected)
self.assertEqual(decode_flags(value, self.FLAGS_VALUES, False), expected)
def test_one(self):
self.assertDecodeFlags(1, "BOLD")
self.assertDecodeFlags(2, "ITALIC")
self.assertDecodeFlags(4, "UNDERLINE")
def test_multiple(self):
self.assertDecodeFlags(3, "BOLD|ITALIC")
self.assertDecodeFlags(5, "BOLD|UNDERLINE")
self.assertDecodeFlags(6, "ITALIC|UNDERLINE")
self.assertDecodeFlags(7, "BOLD|ITALIC|UNDERLINE")
def test_all_unknown(self):
self.assertDecodeFlags(8, "0x8")
def test_some_unknown(self):
self.assertDecodeFlags(9, "BOLD|0x8")
def test_alias(self):
self.assertEqual(
decode_flags(2, (("SMALL", 0), ("BIG", 1), ("LARGE", 1))), "BIG|LARGE"
)
self.assertEqual(
decode_flags(2, (("SMALL", 1), ("BIG", 2), ("LARGE", 2)), False),
"BIG|LARGE",
)
def test_no_aliases(self):
self.assertEqual(
decode_flags(2, (("SMALL", 0), ("BIG", 1), ("LARGE", 1)), aliases=False),
"BIG",
)
def test_no_aliases_all_unknown(self):
self.assertEqual(
decode_flags(8, (("SMALL", 0), ("BIG", 1), ("LARGE", 1)), aliases=False),
"0x8",
)
def test_no_aliases_some_unknown(self):
self.assertEqual(
decode_flags(10, (("SMALL", 0), ("BIG", 1), ("LARGE", 1)), aliases=False),
"BIG|0x8",
)
def test_zero(self):
self.assertDecodeFlags(0, "0")
def test_decode_enum_type_flags(self):
prog = Program(MOCK_PLATFORM)
for bit_numbers, flags in (
(True, self.FLAGS_BIT_NUMBERS),
(False, self.FLAGS_VALUES),
):
with self.subTest(bit_numbers=bit_numbers):
type = prog.enum_type(
None,
prog.int_type("int", 4, True),
[TypeEnumerator(*flag) for flag in flags],
)
self.assertEqual(
decode_enum_type_flags(4, type, bit_numbers), "UNDERLINE"
)
self.assertEqual(
decode_enum_type_flags(27, type, bit_numbers), "BOLD|ITALIC|0x18"
)
def test_decode_enum_type_flags_incomplete(self):
self.assertRaisesRegex(
TypeError,
"incomplete",
decode_enum_type_flags,
2,
Program().enum_type(None),
)
class TestNumberInBinaryUnits(TestCase):
def test_zero(self):
self.assertEqual(number_in_binary_units(0), "0")
def test_small(self):
self.assertEqual(number_in_binary_units(100), "100")
self.assertEqual(number_in_binary_units(1023), "1023")
def test_small_negative(self):
self.assertEqual(number_in_binary_units(-100), "-100")
self.assertEqual(number_in_binary_units(-1023), "-1023")
def test_integer(self):
self.assertEqual(number_in_binary_units(1024), "1K")
self.assertEqual(number_in_binary_units(1024**2), "1M")
self.assertEqual(number_in_binary_units(1024**3), "1G")
self.assertEqual(number_in_binary_units(1024**4), "1T")
self.assertEqual(number_in_binary_units(1024**5), "1P")
self.assertEqual(number_in_binary_units(1024**6), "1E")
self.assertEqual(number_in_binary_units(1024**7), "1Z")
self.assertEqual(number_in_binary_units(1024**8), "1Y")
def test_negative_integer(self):
self.assertEqual(number_in_binary_units(-1024), "-1K")
self.assertEqual(number_in_binary_units(-(1024**2)), "-1M")
self.assertEqual(number_in_binary_units(-(1024**3)), "-1G")
self.assertEqual(number_in_binary_units(-(1024**4)), "-1T")
self.assertEqual(number_in_binary_units(-(1024**5)), "-1P")
self.assertEqual(number_in_binary_units(-(1024**6)), "-1E")
self.assertEqual(number_in_binary_units(-(1024**7)), "-1Z")
self.assertEqual(number_in_binary_units(-(1024**8)), "-1Y")
def test_almost_integer(self):
self.assertEqual(number_in_binary_units(1025), "1.0K")
self.assertEqual(number_in_binary_units(1024**4 + 1), "1.0T")
def test_precision(self):
n = 1088
self.assertEqual(number_in_binary_units(n, precision=0), "1K")
self.assertEqual(number_in_binary_units(n, precision=1), "1.1K")
self.assertEqual(number_in_binary_units(n, precision=2), "1.06K")
def test_huge(self):
self.assertEqual(number_in_binary_units(1024**8 * 1.5), "1.5Y")
self.assertEqual(number_in_binary_units(1024**10), "1048576Y")
class TestPrintTable(TestCase):
def assert_print_table(self, rows, expected, **kwargs):
f = io.StringIO()
print_table(rows, file=f)
self.assertEqual(f.getvalue(), expected)
def test_empty(self):
self.assert_print_table([], "")
def test_one_row(self):
self.assert_print_table([["abc", "de", "fghi"]], "abc de fghi\n")
def test_align(self):
self.assert_print_table(
[[2, 2000, 4], [13, 3, 19]],
"""\
2 2000 4
13 3 19
""",
)
def test_empty_cell(self):
self.assert_print_table(
[[2, 2000, 4], ["", 3, 13, 19]],
"""\
2 2000 4
3 13 19
""",
)
def test_cell_format(self):
self.assert_print_table(
[
["DECIMAL", "HEXADECIMAL"],
[CellFormat(10, "<"), CellFormat(10, "<x")],
],
"""\
DECIMAL HEXADECIMAL
10 a
""",
)
def test_row_options(self):
self.assert_print_table(
[
["LETTER", "INDEX"],
["A", 1],
RowOptions(["WORD", "LENGTH"], group=1),
RowOptions(["angstrom", 8], group=1),
["LETTER", "INDEX"],
["B", 2],
RowOptions(["WORD", "LENGTH"], group=1),
RowOptions(["banana", 6], group=1),
],
"""\
LETTER INDEX
A 1
WORD LENGTH
angstrom 8
LETTER INDEX
B 2
WORD LENGTH
banana 6
""",
)
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