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Add FuzzedDataProvider helper class / single header library.
Summary: This class is useful for writing fuzz target that have multiple inputs. Current CL imports the existing `FuzzedDataProvider` from Chromium without any modifications. Feel free to review it thoroughly, if you're interested, but I'd prefer changing the class in a follow up CL. The CL also introduces an exhaustive test for the library, as the behavior of `FuzzedDataProvider` must not change over time. In follow up CLs I'm planning on changing some implementation details (I can share a doc with some comments to be addressed). After that, we will document how `FuzzedDataProvider` should be used. I have tested this on Linux, Windows and Mac platforms. Reviewers: morehouse, metzman, kcc Reviewed By: morehouse Subscribers: metzman, thakis, rnk, mgorny, ormris, delcypher, #sanitizers, llvm-commits Tags: #llvm, #sanitizers Differential Revision: https://reviews.llvm.org/D62733 llvm-svn: 363071
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‎compiler-rt/lib/fuzzer/tests/CMakeLists.txt

Lines changed: 17 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -14,10 +14,15 @@ endif()
1414
add_custom_target(FuzzerUnitTests)
1515
set_target_properties(FuzzerUnitTests PROPERTIES FOLDER "Compiler-RT Tests")
1616

17+
add_custom_target(FuzzedDataProviderUnitTests)
18+
set_target_properties(FuzzedDataProviderUnitTests PROPERTIES FOLDER "Compiler-RT Tests")
19+
1720
set(LIBFUZZER_UNITTEST_LINK_FLAGS ${COMPILER_RT_UNITTEST_LINK_FLAGS})
1821
list(APPEND LIBFUZZER_UNITTEST_LINK_FLAGS --driver-mode=g++)
1922

20-
if(NOT WIN32)
23+
if(WIN32)
24+
list(APPEND LIBFUZZER_UNITTEST_LINK_FLAGS -Wl,-defaultlib:libcmt,-defaultlib:oldnames)
25+
else()
2126
list(APPEND LIBFUZZER_UNITTEST_LINK_FLAGS -lpthread)
2227
endif()
2328

@@ -64,9 +69,19 @@ if(COMPILER_RT_DEFAULT_TARGET_ARCH IN_LIST FUZZER_SUPPORTED_ARCH)
6469
FuzzerUnitTests "Fuzzer-${arch}-Test" ${arch}
6570
SOURCES FuzzerUnittest.cpp ${COMPILER_RT_GTEST_SOURCE}
6671
RUNTIME ${LIBFUZZER_TEST_RUNTIME}
67-
DEPS gtest ${LIBFUZZER_TEST_RUNTIME_DEPS}
72+
DEPS gtest ${LIBFUZZER_TEST_RUNTIME_DEPS}
6873
CFLAGS ${LIBFUZZER_UNITTEST_CFLAGS} ${LIBFUZZER_TEST_RUNTIME_CFLAGS}
6974
LINK_FLAGS ${LIBFUZZER_UNITTEST_LINK_FLAGS} ${LIBFUZZER_TEST_RUNTIME_LINK_FLAGS})
7075
set_target_properties(FuzzerUnitTests PROPERTIES
7176
RUNTIME_OUTPUT_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})
77+
78+
set(FuzzedDataProviderTestObjects)
79+
generate_compiler_rt_tests(FuzzedDataProviderTestObjects
80+
FuzzedDataProviderUnitTests "FuzzerUtils-${arch}-Test" ${arch}
81+
SOURCES FuzzedDataProviderUnittest.cpp ${COMPILER_RT_GTEST_SOURCE}
82+
DEPS gtest ${LIBFUZZER_TEST_RUNTIME_DEPS}
83+
CFLAGS ${LIBFUZZER_UNITTEST_CFLAGS} ${LIBFUZZER_TEST_RUNTIME_CFLAGS}
84+
LINK_FLAGS ${LIBFUZZER_UNITTEST_LINK_FLAGS} ${LIBFUZZER_TEST_RUNTIME_LINK_FLAGS})
85+
set_target_properties(FuzzedDataProviderUnitTests PROPERTIES
86+
RUNTIME_OUTPUT_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})
7287
endif()

‎compiler-rt/lib/fuzzer/tests/FuzzedDataProviderUnittest.cpp

Lines changed: 321 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,321 @@
1+
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
2+
// See https://llvm.org/LICENSE.txt for license information.
3+
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
4+
5+
#include "gtest/gtest.h"
6+
#include <cstdint>
7+
#include <cstdlib>
8+
9+
#include "utils/FuzzedDataProvider.h"
10+
11+
// The test is intentionally extensive, as behavior of |FuzzedDataProvider| must
12+
// not be broken, given than many fuzz targets depend on it. Changing the
13+
// behavior might invalidate existing corpora and make the fuzz targets using
14+
// |FuzzedDataProvider| to lose code coverage accumulated over time.
15+
16+
/* A random 1KB buffer generated by:
17+
$ python -c "import os; print ',\n'.join([', '.join(['0x%02X' % ord(i) for i \
18+
in list(os.urandom(8))]) for _ in xrange(128)])"
19+
*/
20+
const uint8_t Data[] = {
21+
0x8A, 0x19, 0x0D, 0x44, 0x37, 0x0D, 0x38, 0x5E, 0x9B, 0xAA, 0xF3, 0xDA,
22+
0xAA, 0x88, 0xF2, 0x9B, 0x6C, 0xBA, 0xBE, 0xB1, 0xF2, 0xCF, 0x13, 0xB8,
23+
0xAC, 0x1A, 0x7F, 0x1C, 0xC9, 0x90, 0xD0, 0xD9, 0x5C, 0x42, 0xB3, 0xFD,
24+
0xE3, 0x05, 0xA4, 0x03, 0x37, 0x49, 0x50, 0x4B, 0xBC, 0x39, 0xA2, 0x09,
25+
0x6C, 0x2F, 0xAF, 0xD1, 0xB5, 0x47, 0xBF, 0x92, 0xBD, 0x79, 0xE5, 0xC5,
26+
0x6E, 0x51, 0xA4, 0xED, 0xE9, 0xBD, 0x40, 0x4A, 0xFC, 0x25, 0x7A, 0x27,
27+
0xC8, 0x92, 0xF7, 0x30, 0xDE, 0x40, 0x66, 0x66, 0xE8, 0x5F, 0x65, 0x39,
28+
0x7E, 0x9E, 0x80, 0x2B, 0x01, 0x71, 0x2A, 0xFF, 0xD3, 0x0A, 0xAC, 0x6E,
29+
0x49, 0x32, 0x79, 0x10, 0x6A, 0x6F, 0x97, 0x96, 0x70, 0x7E, 0x50, 0x65,
30+
0xC9, 0x1D, 0xBD, 0x4E, 0x17, 0x04, 0x1E, 0xBA, 0x26, 0xAC, 0x1F, 0xE3,
31+
0x37, 0x1C, 0x15, 0x43, 0x60, 0x41, 0x2A, 0x7C, 0xCA, 0x70, 0xCE, 0xAB,
32+
0x20, 0x24, 0xF8, 0xD9, 0x1F, 0x14, 0x7C, 0x5C, 0xDD, 0x6F, 0xB3, 0xD7,
33+
0x8B, 0x63, 0x10, 0xB7, 0xDA, 0x99, 0xAF, 0x99, 0x01, 0x21, 0xE6, 0xE1,
34+
0x86, 0x27, 0xBE, 0x8D, 0xDF, 0x1E, 0xEA, 0x80, 0x0B, 0x8A, 0x60, 0xC3,
35+
0x3A, 0x85, 0x33, 0x53, 0x59, 0xE1, 0xB5, 0xF1, 0x62, 0xA6, 0x7B, 0x24,
36+
0x94, 0xE3, 0x8C, 0x10, 0x93, 0xF8, 0x6E, 0xC2, 0x00, 0x91, 0x90, 0x0B,
37+
0x5D, 0x52, 0x4F, 0x21, 0xE3, 0x40, 0x3A, 0x6E, 0xB6, 0x32, 0x15, 0xDB,
38+
0x5D, 0x01, 0x86, 0x63, 0x83, 0x24, 0xC5, 0xDE, 0xAB, 0x31, 0x84, 0xAA,
39+
0xE5, 0x64, 0x02, 0x8D, 0x23, 0x82, 0x86, 0x14, 0x16, 0x18, 0x9F, 0x3D,
40+
0x31, 0xBE, 0x3B, 0xF0, 0x6C, 0x26, 0x42, 0x9A, 0x67, 0xFE, 0x28, 0xEC,
41+
0x28, 0xDB, 0x01, 0xB4, 0x52, 0x41, 0x81, 0x7C, 0x54, 0xD3, 0xC8, 0x00,
42+
0x01, 0x66, 0xB0, 0x2C, 0x3F, 0xBC, 0xAF, 0xAC, 0x87, 0xCD, 0x83, 0xCF,
43+
0x23, 0xFC, 0xC8, 0x97, 0x8C, 0x71, 0x32, 0x8B, 0xBF, 0x70, 0xC0, 0x48,
44+
0x31, 0x92, 0x18, 0xFE, 0xE5, 0x33, 0x48, 0x82, 0x98, 0x1E, 0x30, 0xCC,
45+
0xAD, 0x5D, 0x97, 0xC4, 0xB4, 0x39, 0x7C, 0xCD, 0x39, 0x44, 0xF1, 0xA9,
46+
0xD0, 0xF4, 0x27, 0xB7, 0x78, 0x85, 0x9E, 0x72, 0xFC, 0xCC, 0xEE, 0x98,
47+
0x25, 0x3B, 0x69, 0x6B, 0x0C, 0x11, 0xEA, 0x22, 0xB6, 0xD0, 0xCD, 0xBF,
48+
0x6D, 0xBE, 0x12, 0xDE, 0xFE, 0x78, 0x2E, 0x54, 0xCB, 0xBA, 0xD7, 0x2E,
49+
0x54, 0x25, 0x14, 0x84, 0xFE, 0x1A, 0x10, 0xCE, 0xCC, 0x20, 0xE6, 0xE2,
50+
0x7F, 0xE0, 0x5F, 0xDB, 0xA7, 0xF3, 0xE2, 0x4C, 0x52, 0x82, 0xFC, 0x0B,
51+
0xA0, 0xBD, 0x34, 0x21, 0xF7, 0xEB, 0x1C, 0x5B, 0x67, 0xD0, 0xAF, 0x22,
52+
0x15, 0xA1, 0xFF, 0xC2, 0x68, 0x25, 0x5B, 0xB2, 0x13, 0x3F, 0xFF, 0x98,
53+
0x53, 0x25, 0xC5, 0x58, 0x39, 0xD0, 0x43, 0x86, 0x6C, 0x5B, 0x57, 0x8E,
54+
0x83, 0xBA, 0xB9, 0x09, 0x09, 0x14, 0x0C, 0x9E, 0x99, 0x83, 0x88, 0x53,
55+
0x79, 0xFD, 0xF7, 0x49, 0xE9, 0x2C, 0xCE, 0xE6, 0x7B, 0xF5, 0xC2, 0x27,
56+
0x5E, 0x56, 0xB5, 0xB4, 0x46, 0x90, 0x91, 0x7F, 0x99, 0x88, 0xA7, 0x23,
57+
0xC1, 0x80, 0xB8, 0x2D, 0xCD, 0xF7, 0x6F, 0x9A, 0xEC, 0xBD, 0x16, 0x9F,
58+
0x7D, 0x87, 0x1E, 0x15, 0x51, 0xC4, 0x96, 0xE2, 0xBF, 0x61, 0x66, 0xB5,
59+
0xFD, 0x01, 0x67, 0xD6, 0xFF, 0xD2, 0x14, 0x20, 0x98, 0x8E, 0xEF, 0xF3,
60+
0x22, 0xDB, 0x7E, 0xCE, 0x70, 0x2D, 0x4C, 0x06, 0x5A, 0xA0, 0x4F, 0xC8,
61+
0xB0, 0x4D, 0xA6, 0x52, 0xB2, 0xD6, 0x2F, 0xD8, 0x57, 0xE5, 0xEF, 0xF9,
62+
0xEE, 0x52, 0x0F, 0xEC, 0xC4, 0x90, 0x33, 0xAD, 0x25, 0xDA, 0xCD, 0x12,
63+
0x44, 0x5F, 0x32, 0xF6, 0x6F, 0xEF, 0x85, 0xB8, 0xDC, 0x3C, 0x01, 0x48,
64+
0x28, 0x5D, 0x2D, 0x9C, 0x9B, 0xC0, 0x49, 0x36, 0x1E, 0x6A, 0x0A, 0x0C,
65+
0xB0, 0x6E, 0x81, 0x89, 0xCB, 0x0A, 0x89, 0xCF, 0x73, 0xC6, 0x63, 0x3D,
66+
0x8E, 0x13, 0x57, 0x91, 0x4E, 0xA3, 0x93, 0x8C, 0x61, 0x67, 0xFD, 0x13,
67+
0xE0, 0x14, 0x72, 0xB3, 0xE4, 0x23, 0x45, 0x08, 0x4E, 0x4E, 0xF5, 0xA7,
68+
0xA8, 0xEE, 0x30, 0xFD, 0x81, 0x80, 0x1F, 0xF3, 0x4F, 0xD7, 0xE7, 0xF2,
69+
0x16, 0xC0, 0xD6, 0x15, 0x6A, 0x0F, 0x89, 0x15, 0xA9, 0xCF, 0x35, 0x50,
70+
0x6B, 0x49, 0x3E, 0x12, 0x4A, 0x72, 0xE4, 0x59, 0x9D, 0xD7, 0xDB, 0xD2,
71+
0xD1, 0x61, 0x7D, 0x52, 0x4A, 0x36, 0xF6, 0xBA, 0x0E, 0xFA, 0x88, 0x6F,
72+
0x3C, 0x82, 0x16, 0xF0, 0xD5, 0xED, 0x4D, 0x78, 0xEF, 0x38, 0x17, 0x90,
73+
0xEA, 0x28, 0x32, 0xA9, 0x79, 0x40, 0xFF, 0xAA, 0xE6, 0xF5, 0xC7, 0x96,
74+
0x56, 0x65, 0x61, 0x83, 0x3D, 0xBD, 0xD7, 0xED, 0xD6, 0xB6, 0xC0, 0xED,
75+
0x34, 0xAA, 0x60, 0xA9, 0xE8, 0x82, 0x78, 0xEA, 0x69, 0xF6, 0x47, 0xAF,
76+
0x39, 0xAB, 0x11, 0xDB, 0xE9, 0xFB, 0x68, 0x0C, 0xFE, 0xDF, 0x97, 0x9F,
77+
0x3A, 0xF4, 0xF3, 0x32, 0x27, 0x30, 0x57, 0x0E, 0xF7, 0xB2, 0xEE, 0xFB,
78+
0x1E, 0x98, 0xA8, 0xA3, 0x25, 0x45, 0xE4, 0x6D, 0x2D, 0xAE, 0xFE, 0xDA,
79+
0xB3, 0x32, 0x9B, 0x5D, 0xF5, 0x32, 0x74, 0xEA, 0xE5, 0x02, 0x30, 0x53,
80+
0x95, 0x13, 0x7A, 0x23, 0x1F, 0x10, 0x30, 0xEA, 0x78, 0xE4, 0x36, 0x1D,
81+
0x92, 0x96, 0xB9, 0x91, 0x2D, 0xFA, 0x43, 0xAB, 0xE6, 0xEF, 0x14, 0x14,
82+
0xC9, 0xBC, 0x46, 0xC6, 0x05, 0x7C, 0xC6, 0x11, 0x23, 0xCF, 0x3D, 0xC8,
83+
0xBE, 0xEC, 0xA3, 0x58, 0x31, 0x55, 0x65, 0x14, 0xA7, 0x94, 0x93, 0xDD,
84+
0x2D, 0x76, 0xC9, 0x66, 0x06, 0xBD, 0xF5, 0xE7, 0x30, 0x65, 0x42, 0x52,
85+
0xA2, 0x50, 0x9B, 0xE6, 0x40, 0xA2, 0x4B, 0xEC, 0xA6, 0xB7, 0x39, 0xAA,
86+
0xD7, 0x61, 0x2C, 0xBF, 0x37, 0x5A, 0xDA, 0xB3, 0x5D, 0x2F, 0x5D, 0x11,
87+
0x82, 0x97, 0x32, 0x8A, 0xC1, 0xA1, 0x13, 0x20, 0x17, 0xBD, 0xA2, 0x91,
88+
0x94, 0x2A, 0x4E, 0xBE, 0x3E, 0x77, 0x63, 0x67, 0x5C, 0x0A, 0xE1, 0x22,
89+
0x0A, 0x4F, 0x63, 0xE2, 0x84, 0xE9, 0x9F, 0x14, 0x86, 0xE2, 0x4B, 0x20,
90+
0x9F, 0x50, 0xB3, 0x56, 0xED, 0xDE, 0x39, 0xD8, 0x75, 0x64, 0x45, 0x54,
91+
0xE5, 0x34, 0x57, 0x8C, 0x3B, 0xF2, 0x0E, 0x94, 0x1B, 0x10, 0xA2, 0xA2,
92+
0x38, 0x76, 0x21, 0x8E, 0x2A, 0x57, 0x64, 0x58, 0x0A, 0x27, 0x6D, 0x4C,
93+
0xD0, 0xB5, 0xC1, 0xFC, 0x75, 0xD0, 0x01, 0x86, 0x66, 0xA8, 0xF1, 0x98,
94+
0x58, 0xFB, 0xFC, 0x64, 0xD2, 0x31, 0x77, 0xAD, 0x0E, 0x46, 0x87, 0xCC,
95+
0x9B, 0x86, 0x90, 0xFF, 0xB6, 0x64, 0x35, 0xA5, 0x5D, 0x9E, 0x44, 0x51,
96+
0x87, 0x9E, 0x1E, 0xEE, 0xF3, 0x3B, 0x5C, 0xDD, 0x94, 0x03, 0xAA, 0x18,
97+
0x2C, 0xB7, 0xC4, 0x37, 0xD5, 0x53, 0x28, 0x60, 0xEF, 0x77, 0xEF, 0x3B,
98+
0x9E, 0xD2, 0xCE, 0xE9, 0x53, 0x2D, 0xF5, 0x19, 0x7E, 0xBB, 0xB5, 0x46,
99+
0xE2, 0xF7, 0xD6, 0x4D, 0x6D, 0x5B, 0x81, 0x56, 0x6B, 0x12, 0x55, 0x63,
100+
0xC3, 0xAB, 0x08, 0xBB, 0x2E, 0xD5, 0x11, 0xBC, 0x18, 0xCB, 0x8B, 0x12,
101+
0x2E, 0x3E, 0x75, 0x32, 0x98, 0x8A, 0xDE, 0x3C, 0xEA, 0x33, 0x46, 0xE7,
102+
0x7A, 0xA5, 0x12, 0x09, 0x26, 0x7E, 0x7E, 0x03, 0x4F, 0xFD, 0xC0, 0xFD,
103+
0xEA, 0x4F, 0x83, 0x85, 0x39, 0x62, 0xFB, 0xA2, 0x33, 0xD9, 0x2D, 0xB1,
104+
0x30, 0x6F, 0x88, 0xAB, 0x61, 0xCB, 0x32, 0xEB, 0x30, 0xF9, 0x51, 0xF6,
105+
0x1F, 0x3A, 0x11, 0x4D, 0xFD, 0x54, 0xD6, 0x3D, 0x43, 0x73, 0x39, 0x16,
106+
0xCF, 0x3D, 0x29, 0x4A};
107+
108+
TEST(FuzzedDataProvider, ConsumeBytes) {
109+
FuzzedDataProvider DataProv(Data, sizeof(Data));
110+
EXPECT_EQ(std::vector<char>(1, 0x8A), DataProv.ConsumeBytes<char>(1));
111+
EXPECT_EQ(std::vector<uint8_t>(
112+
{0x19, 0x0D, 0x44, 0x37, 0x0D, 0x38, 0x5E, 0x9B, 0xAA, 0xF3}),
113+
DataProv.ConsumeBytes<uint8_t>(10));
114+
115+
std::vector<unsigned char> UChars = DataProv.ConsumeBytes(24);
116+
EXPECT_EQ(std::vector<unsigned char>({0xDA, 0xAA, 0x88, 0xF2, 0x9B, 0x6C,
117+
0xBA, 0xBE, 0xB1, 0xF2, 0xCF, 0x13,
118+
0xB8, 0xAC, 0x1A, 0x7F, 0x1C, 0xC9,
119+
0x90, 0xD0, 0xD9, 0x5C, 0x42, 0xB3}),
120+
UChars);
121+
122+
EXPECT_EQ(std::vector<signed char>(Data + 1 + 10 + 24, Data + sizeof(Data)),
123+
DataProv.ConsumeBytes<signed char>(31337));
124+
}
125+
126+
TEST(FuzzedDataProvider, ConsumeBytesAsString) {
127+
FuzzedDataProvider DataProv(Data, sizeof(Data));
128+
EXPECT_EQ(std::string("\x8A\x19\x0D\x44\x37\x0D\x38\x5E\x9B\xAA\xF3\xDA"),
129+
DataProv.ConsumeBytesAsString(12));
130+
EXPECT_EQ(std::string(Data + 12, Data + sizeof(Data)),
131+
DataProv.ConsumeBytesAsString(31337));
132+
}
133+
134+
TEST(FuzzedDataProvider, ConsumeIntegralInRange) {
135+
FuzzedDataProvider DataProv(Data, sizeof(Data));
136+
EXPECT_EQ(int32_t(21), DataProv.ConsumeIntegralInRange<int32_t>(10, 30));
137+
EXPECT_EQ(int32_t(1337),
138+
DataProv.ConsumeIntegralInRange<int32_t>(1337, 1337));
139+
EXPECT_EQ(int8_t(-59), DataProv.ConsumeIntegralInRange<int8_t>(-100, 100));
140+
EXPECT_EQ(uint16_t(15823),
141+
DataProv.ConsumeIntegralInRange<uint16_t>(0, 65535));
142+
EXPECT_EQ((signed char)(-101),
143+
DataProv.ConsumeIntegralInRange<signed char>(-123, 123));
144+
EXPECT_EQ(int64_t(-53253077544), DataProv.ConsumeIntegralInRange<int64_t>(
145+
-99999999999, 99999999999));
146+
147+
// Exhaust the buffer.
148+
auto String = DataProv.ConsumeBytesAsString(31337);
149+
EXPECT_EQ(size_t(1014), String.length());
150+
EXPECT_EQ(uint64_t(123456789),
151+
DataProv.ConsumeIntegralInRange<uint64_t>(123456789, 987654321));
152+
}
153+
154+
TEST(FuzzedDataProvider, ConsumeRandomLengthString) {
155+
FuzzedDataProvider DataProv(Data, sizeof(Data));
156+
EXPECT_EQ(
157+
std::string(
158+
"\x8A\x19\x0D\x44\x37\x0D\x38\x5E\x9B\xAA\xF3\xDA\xAA\x88\xF2\x9B\x6C"
159+
"\xBA\xBE\xB1\xF2\xCF\x13\xB8\xAC\x1A\x7F\x1C\xC9\x90\xD0\xD9"),
160+
DataProv.ConsumeRandomLengthString(1337));
161+
EXPECT_EQ(std::string(
162+
"\xB3\xFD\xE3\x05\xA4\x03\x37\x49\x50\x4B\xBC\x39\xA2\x09\x6C"
163+
"\x2F\xAF\xD1\xB5\x47\xBF\x92\xBD\x79\xE5\xC5\x6E\x51\xA4\xED"
164+
"\xE9\xBD\x40\x4A\xFC\x25\x7A\x27\xC8\x92\xF7\x30\xDE\x40\x66"
165+
"\x66\xE8\x5F\x65\x39\x7E\x9E\x80\x2B\x01\x71\x2A\xFF\xD3\x0A"
166+
"\xAC\x6E\x49\x32\x79\x10\x6A\x6F\x97\x96\x70\x7E\x50\x65\xC9"
167+
"\x1D\xBD\x4E\x17\x04\x1E\xBA\x26\xAC\x1F\xE3\x37\x1C\x15\x43"
168+
"\x60\x41\x2A\x7C\xCA\x70\xCE\xAB\x20\x24\xF8\xD9\x1F\x14\x7C"),
169+
DataProv.ConsumeRandomLengthString(31337));
170+
EXPECT_EQ(std::string(Data + 141, Data + 141 + 5),
171+
DataProv.ConsumeRandomLengthString(5));
172+
EXPECT_EQ(std::string(Data + 141 + 5, Data + 141 + 5 + 2),
173+
DataProv.ConsumeRandomLengthString(2));
174+
175+
// Exhaust the buffer.
176+
auto String = DataProv.ConsumeBytesAsString(31337);
177+
EXPECT_EQ(size_t(876), String.length());
178+
EXPECT_EQ(std::string(), DataProv.ConsumeRandomLengthString(1));
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}
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TEST(FuzzedDataProvider, ConsumeRemainingBytes) {
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{
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FuzzedDataProvider DataProv(Data, sizeof(Data));
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EXPECT_EQ(std::vector<uint8_t>(Data, Data + sizeof(Data)),
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DataProv.ConsumeRemainingBytes());
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EXPECT_EQ(std::vector<uint8_t>(), DataProv.ConsumeRemainingBytes());
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}
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{
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FuzzedDataProvider DataProv(Data, sizeof(Data));
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EXPECT_EQ(std::vector<uint8_t>(Data, Data + 123),
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DataProv.ConsumeBytes(123));
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EXPECT_EQ(std::vector<char>(Data + 123, Data + sizeof(Data)),
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DataProv.ConsumeRemainingBytes<char>());
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}
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}
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TEST(FuzzedDataProvider, ConsumeRemainingBytesAsString) {
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{
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FuzzedDataProvider DataProv(Data, sizeof(Data));
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EXPECT_EQ(std::string(Data, Data + sizeof(Data)),
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DataProv.ConsumeRemainingBytesAsString());
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EXPECT_EQ(std::string(""), DataProv.ConsumeRemainingBytesAsString());
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}
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{
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FuzzedDataProvider DataProv(Data, sizeof(Data));
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EXPECT_EQ(std::vector<uint8_t>(Data, Data + 123),
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DataProv.ConsumeBytes(123));
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EXPECT_EQ(std::string(Data + 123, Data + sizeof(Data)),
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DataProv.ConsumeRemainingBytesAsString());
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}
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}
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TEST(FuzzedDataProvider, ConsumeIntegral) {
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FuzzedDataProvider DataProv(Data, sizeof(Data));
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EXPECT_EQ(int32_t(-903266865), DataProv.ConsumeIntegral<int32_t>());
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EXPECT_EQ(uint32_t(372863811), DataProv.ConsumeIntegral<uint32_t>());
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EXPECT_EQ(uint8_t(61), DataProv.ConsumeIntegral<uint8_t>());
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EXPECT_EQ(int16_t(22100), DataProv.ConsumeIntegral<int16_t>());
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EXPECT_EQ(uint64_t(18252263806144500217u),
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DataProv.ConsumeIntegral<uint64_t>());
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// Exhaust the buffer.
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auto String = DataProv.ConsumeBytesAsString(31337);
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EXPECT_EQ(size_t(1005), String.length());
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EXPECT_EQ(std::numeric_limits<int64_t>::min(),
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DataProv.ConsumeIntegral<int64_t>());
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}
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TEST(FuzzedDataProvider, ConsumeBool) {
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FuzzedDataProvider DataProv(Data, sizeof(Data));
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EXPECT_EQ(false, DataProv.ConsumeBool());
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EXPECT_EQ(true, DataProv.ConsumeBool());
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EXPECT_EQ(true, DataProv.ConsumeBool());
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EXPECT_EQ(true, DataProv.ConsumeBool());
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EXPECT_EQ(false, DataProv.ConsumeBool());
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EXPECT_EQ(true, DataProv.ConsumeBool());
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EXPECT_EQ(true, DataProv.ConsumeBool());
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EXPECT_EQ(true, DataProv.ConsumeBool());
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EXPECT_EQ(true, DataProv.ConsumeBool());
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EXPECT_EQ(false, DataProv.ConsumeBool());
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// Exhaust the buffer.
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auto String = DataProv.ConsumeBytesAsString(31337);
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EXPECT_EQ(size_t(1014), String.length());
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EXPECT_EQ(false, DataProv.ConsumeBool());
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}
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TEST(FuzzedDataProvider, PickValueInArray) {
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FuzzedDataProvider DataProv(Data, sizeof(Data));
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const int Array[] = {1, 2, 3, 4, 5};
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EXPECT_EQ(5, DataProv.PickValueInArray(Array));
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EXPECT_EQ(2, DataProv.PickValueInArray(Array));
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EXPECT_EQ(2, DataProv.PickValueInArray(Array));
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EXPECT_EQ(3, DataProv.PickValueInArray(Array));
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EXPECT_EQ(3, DataProv.PickValueInArray(Array));
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EXPECT_EQ(3, DataProv.PickValueInArray(Array));
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EXPECT_EQ(1, DataProv.PickValueInArray(Array));
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EXPECT_EQ(3, DataProv.PickValueInArray(Array));
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EXPECT_EQ(2, DataProv.PickValueInArray(Array));
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EXPECT_EQ(uint8_t(0x9D), DataProv.PickValueInArray(Data));
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EXPECT_EQ(uint8_t(0xBA), DataProv.PickValueInArray(Data));
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EXPECT_EQ(uint8_t(0x69), DataProv.PickValueInArray(Data));
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EXPECT_EQ(uint8_t(0xD6), DataProv.PickValueInArray(Data));
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// Exhaust the buffer.
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auto String = DataProv.ConsumeBytesAsString(31337);
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EXPECT_EQ(size_t(1007), String.length());
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EXPECT_EQ(uint8_t(0x8A), DataProv.PickValueInArray(Data));
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}
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TEST(FuzzedDataProvider, ConsumeEnum) {
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FuzzedDataProvider DataProv(Data, sizeof(Data));
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enum class Enum {
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Zero,
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One,
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Two,
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Three,
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Four,
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Five,
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Six,
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Seven,
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kMaxValue = Seven
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};
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EXPECT_EQ(Enum::Two, DataProv.ConsumeEnum<Enum>());
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EXPECT_EQ(Enum::One, DataProv.ConsumeEnum<Enum>());
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EXPECT_EQ(Enum::Five, DataProv.ConsumeEnum<Enum>());
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EXPECT_EQ(Enum::Seven, DataProv.ConsumeEnum<Enum>());
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EXPECT_EQ(Enum::Six, DataProv.ConsumeEnum<Enum>());
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EXPECT_EQ(Enum::One, DataProv.ConsumeEnum<Enum>());
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EXPECT_EQ(Enum::Three, DataProv.ConsumeEnum<Enum>());
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EXPECT_EQ(Enum::Three, DataProv.ConsumeEnum<Enum>());
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EXPECT_EQ(Enum::Five, DataProv.ConsumeEnum<Enum>());
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EXPECT_EQ(Enum::Six, DataProv.ConsumeEnum<Enum>());
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// Exhaust the buffer.
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auto String = DataProv.ConsumeBytesAsString(31337);
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EXPECT_EQ(size_t(1014), String.length());
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EXPECT_EQ(Enum::Zero, DataProv.ConsumeEnum<Enum>());
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}
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TEST(FuzzedDataProvider, remaining_bytes) {
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FuzzedDataProvider DataProv(Data, sizeof(Data));
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EXPECT_EQ(size_t(1024), DataProv.remaining_bytes());
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EXPECT_EQ(false, DataProv.ConsumeBool());
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EXPECT_EQ(size_t(1024 - 1), DataProv.remaining_bytes());
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EXPECT_EQ(std::vector<uint8_t>(Data, Data + 8), DataProv.ConsumeBytes(8));
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EXPECT_EQ(size_t(1024 - 1 - 8), DataProv.remaining_bytes());
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// Exhaust the buffer.
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EXPECT_EQ(std::vector<uint8_t>(Data + 8, Data + sizeof(Data) - 1),
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DataProv.ConsumeRemainingBytes());
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EXPECT_EQ(size_t(0), DataProv.remaining_bytes());
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}
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int main(int argc, char **argv) {
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testing::InitGoogleTest(&argc, argv);
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return RUN_ALL_TESTS();
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}

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