Dynamic Tools Team | 517193e | 2019-09-11 14:48:41 +0000 | [diff] [blame] | 1 | //===-- strings_test.cpp ----------------------------------------*- C++ -*-===// |
| 2 | // |
| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| 4 | // See https://llvm.org/LICENSE.txt for license information. |
| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| 6 | // |
| 7 | //===----------------------------------------------------------------------===// |
| 8 | |
Dynamic Tools Team | 09e6d48 | 2019-11-26 18:18:14 -0800 | [diff] [blame] | 9 | #include "tests/scudo_unit_test.h" |
| 10 | |
| 11 | #include "string_utils.h" |
Dynamic Tools Team | 517193e | 2019-09-11 14:48:41 +0000 | [diff] [blame] | 12 | |
| 13 | #include <limits.h> |
| 14 | |
Vitaly Buka | 04f3ad9 | 2021-06-04 13:48:54 -0700 | [diff] [blame] | 15 | TEST(ScudoStringsTest, Constructor) { |
| 16 | scudo::ScopedString Str; |
Vitaly Buka | c1d01df | 2021-06-04 19:32:24 -0700 | [diff] [blame^] | 17 | EXPECT_EQ(0ul, Str.length()); |
Vitaly Buka | 04f3ad9 | 2021-06-04 13:48:54 -0700 | [diff] [blame] | 18 | EXPECT_EQ('\0', *Str.data()); |
| 19 | } |
| 20 | |
Dynamic Tools Team | 517193e | 2019-09-11 14:48:41 +0000 | [diff] [blame] | 21 | TEST(ScudoStringsTest, Basic) { |
Kostya Kortchinsky | 53aea5c | 2021-06-03 12:11:05 -0700 | [diff] [blame] | 22 | scudo::ScopedString Str; |
Dynamic Tools Team | 517193e | 2019-09-11 14:48:41 +0000 | [diff] [blame] | 23 | Str.append("a%db%zdc%ue%zuf%xh%zxq%pe%sr", static_cast<int>(-1), |
| 24 | static_cast<scudo::uptr>(-2), static_cast<unsigned>(-4), |
| 25 | static_cast<scudo::uptr>(5), static_cast<unsigned>(10), |
| 26 | static_cast<scudo::uptr>(11), reinterpret_cast<void *>(0x123), |
| 27 | "_string_"); |
| 28 | EXPECT_EQ(Str.length(), strlen(Str.data())); |
| 29 | |
| 30 | std::string expectedString = "a-1b-2c4294967292e5fahbq0x"; |
| 31 | expectedString += std::string(SCUDO_POINTER_FORMAT_LENGTH - 3, '0'); |
| 32 | expectedString += "123e_string_r"; |
| 33 | EXPECT_EQ(Str.length(), strlen(Str.data())); |
| 34 | EXPECT_STREQ(expectedString.c_str(), Str.data()); |
| 35 | } |
| 36 | |
Vitaly Buka | 04f3ad9 | 2021-06-04 13:48:54 -0700 | [diff] [blame] | 37 | TEST(ScudoStringsTest, Clear) { |
| 38 | scudo::ScopedString Str; |
| 39 | Str.append("123"); |
| 40 | Str.clear(); |
Vitaly Buka | c1d01df | 2021-06-04 19:32:24 -0700 | [diff] [blame^] | 41 | EXPECT_EQ(0ul, Str.length()); |
Vitaly Buka | 04f3ad9 | 2021-06-04 13:48:54 -0700 | [diff] [blame] | 42 | EXPECT_EQ('\0', *Str.data()); |
| 43 | } |
| 44 | |
| 45 | TEST(ScudoStringsTest, ClearLarge) { |
| 46 | scudo::ScopedString Str; |
| 47 | for (int i = 0; i < 10000; ++i) |
| 48 | Str.append("123"); |
| 49 | Str.clear(); |
Vitaly Buka | c1d01df | 2021-06-04 19:32:24 -0700 | [diff] [blame^] | 50 | EXPECT_EQ(0ul, Str.length()); |
Vitaly Buka | 04f3ad9 | 2021-06-04 13:48:54 -0700 | [diff] [blame] | 51 | EXPECT_EQ('\0', *Str.data()); |
| 52 | } |
| 53 | |
Dynamic Tools Team | 517193e | 2019-09-11 14:48:41 +0000 | [diff] [blame] | 54 | TEST(ScudoStringsTest, Precision) { |
Kostya Kortchinsky | 53aea5c | 2021-06-03 12:11:05 -0700 | [diff] [blame] | 55 | scudo::ScopedString Str; |
Dynamic Tools Team | 517193e | 2019-09-11 14:48:41 +0000 | [diff] [blame] | 56 | Str.append("%.*s", 3, "12345"); |
| 57 | EXPECT_EQ(Str.length(), strlen(Str.data())); |
| 58 | EXPECT_STREQ("123", Str.data()); |
| 59 | Str.clear(); |
| 60 | Str.append("%.*s", 6, "12345"); |
| 61 | EXPECT_EQ(Str.length(), strlen(Str.data())); |
| 62 | EXPECT_STREQ("12345", Str.data()); |
| 63 | Str.clear(); |
| 64 | Str.append("%-6s", "12345"); |
| 65 | EXPECT_EQ(Str.length(), strlen(Str.data())); |
| 66 | EXPECT_STREQ("12345 ", Str.data()); |
| 67 | } |
| 68 | |
| 69 | static void fillString(scudo::ScopedString &Str, scudo::uptr Size) { |
| 70 | for (scudo::uptr I = 0; I < Size; I++) |
| 71 | Str.append("A"); |
| 72 | } |
| 73 | |
| 74 | TEST(ScudoStringTest, PotentialOverflows) { |
| 75 | // Use a ScopedString that spans a page, and attempt to write past the end |
| 76 | // of it with variations of append. The expectation is for nothing to crash. |
| 77 | const scudo::uptr PageSize = scudo::getPageSizeCached(); |
Kostya Kortchinsky | 53aea5c | 2021-06-03 12:11:05 -0700 | [diff] [blame] | 78 | scudo::ScopedString Str; |
Dynamic Tools Team | 517193e | 2019-09-11 14:48:41 +0000 | [diff] [blame] | 79 | Str.clear(); |
| 80 | fillString(Str, 2 * PageSize); |
| 81 | Str.clear(); |
| 82 | fillString(Str, PageSize - 64); |
| 83 | Str.append("%-128s", "12345"); |
| 84 | Str.clear(); |
| 85 | fillString(Str, PageSize - 16); |
| 86 | Str.append("%024x", 12345); |
| 87 | Str.clear(); |
| 88 | fillString(Str, PageSize - 16); |
| 89 | Str.append("EEEEEEEEEEEEEEEEEEEEEEEE"); |
| 90 | } |
| 91 | |
| 92 | template <typename T> |
| 93 | static void testAgainstLibc(const char *Format, T Arg1, T Arg2) { |
Kostya Kortchinsky | 53aea5c | 2021-06-03 12:11:05 -0700 | [diff] [blame] | 94 | scudo::ScopedString Str; |
Dynamic Tools Team | 517193e | 2019-09-11 14:48:41 +0000 | [diff] [blame] | 95 | Str.append(Format, Arg1, Arg2); |
| 96 | char Buffer[128]; |
| 97 | snprintf(Buffer, sizeof(Buffer), Format, Arg1, Arg2); |
| 98 | EXPECT_EQ(Str.length(), strlen(Str.data())); |
| 99 | EXPECT_STREQ(Buffer, Str.data()); |
| 100 | } |
| 101 | |
| 102 | TEST(ScudoStringsTest, MinMax) { |
| 103 | testAgainstLibc<int>("%d-%d", INT_MIN, INT_MAX); |
| 104 | testAgainstLibc<unsigned>("%u-%u", 0, UINT_MAX); |
| 105 | testAgainstLibc<unsigned>("%x-%x", 0, UINT_MAX); |
| 106 | testAgainstLibc<long>("%zd-%zd", LONG_MIN, LONG_MAX); |
| 107 | testAgainstLibc<unsigned long>("%zu-%zu", 0, ULONG_MAX); |
| 108 | testAgainstLibc<unsigned long>("%zx-%zx", 0, ULONG_MAX); |
| 109 | } |
| 110 | |
| 111 | TEST(ScudoStringsTest, Padding) { |
| 112 | testAgainstLibc<int>("%3d - %3d", 1, 0); |
| 113 | testAgainstLibc<int>("%3d - %3d", -1, 123); |
| 114 | testAgainstLibc<int>("%3d - %3d", -1, -123); |
| 115 | testAgainstLibc<int>("%3d - %3d", 12, 1234); |
| 116 | testAgainstLibc<int>("%3d - %3d", -12, -1234); |
| 117 | testAgainstLibc<int>("%03d - %03d", 1, 0); |
| 118 | testAgainstLibc<int>("%03d - %03d", -1, 123); |
| 119 | testAgainstLibc<int>("%03d - %03d", -1, -123); |
| 120 | testAgainstLibc<int>("%03d - %03d", 12, 1234); |
| 121 | testAgainstLibc<int>("%03d - %03d", -12, -1234); |
| 122 | } |