diff options
| -rw-r--r-- | llvm/lib/Fuzzer/test/CMakeLists.txt | 1 | ||||
| -rw-r--r-- | llvm/lib/Fuzzer/test/EmptyTest.cpp | 11 | ||||
| -rw-r--r-- | llvm/lib/Fuzzer/test/FuzzerUnittest.cpp | 22 | ||||
| -rw-r--r-- | llvm/lib/Fuzzer/test/fuzzer-trunc.test | 10 |
4 files changed, 22 insertions, 22 deletions
diff --git a/llvm/lib/Fuzzer/test/CMakeLists.txt b/llvm/lib/Fuzzer/test/CMakeLists.txt index a33f84b6e4a..7bba1d63a92 100644 --- a/llvm/lib/Fuzzer/test/CMakeLists.txt +++ b/llvm/lib/Fuzzer/test/CMakeLists.txt @@ -18,6 +18,7 @@ set(Tests CallerCalleeTest CounterTest CustomMutatorTest + EmptyTest FourIndependentBranchesTest FullCoverageSetTest InitializeTest diff --git a/llvm/lib/Fuzzer/test/EmptyTest.cpp b/llvm/lib/Fuzzer/test/EmptyTest.cpp new file mode 100644 index 00000000000..5e843308fa5 --- /dev/null +++ b/llvm/lib/Fuzzer/test/EmptyTest.cpp @@ -0,0 +1,11 @@ +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. +// +// A fuzzer with empty target function. + +#include <cstdint> +#include <cstdlib> + +extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) { + return 0; +} diff --git a/llvm/lib/Fuzzer/test/FuzzerUnittest.cpp b/llvm/lib/Fuzzer/test/FuzzerUnittest.cpp index 66e9285eb05..7b49f2f08e4 100644 --- a/llvm/lib/Fuzzer/test/FuzzerUnittest.cpp +++ b/llvm/lib/Fuzzer/test/FuzzerUnittest.cpp @@ -13,10 +13,6 @@ extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) { abort(); } -static int EmptyLLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) { - return 0; -} - TEST(Fuzzer, CrossOver) { Random Rand(0); MutationDispatcher MD(Rand); @@ -427,21 +423,3 @@ TEST(Corpus, Distribution) { EXPECT_GT(Hist[i], TriesPerUnit / N / 3); } } - -TEST(Corpus, TruncateUnits) { - Random Rand(0); - MutationDispatcher MD(Rand); - Fuzzer::FuzzingOptions Options; - Options.OutputCorpus = ""; // stops from writing new units. - Fuzzer Fuzz(EmptyLLVMFuzzerTestOneInput, MD, Options); - - Fuzz.AddToCorpus(Unit(1024, static_cast<uint8_t>(1))); - Fuzz.ResetCoverage(); - - std::vector<Unit> NewCorpus; - Fuzz.TruncateUnits(&NewCorpus); - - // New corpus should have a shorter unit. - EXPECT_EQ(1ul, NewCorpus.size()); - EXPECT_EQ(1ul, NewCorpus[0].size()); -} diff --git a/llvm/lib/Fuzzer/test/fuzzer-trunc.test b/llvm/lib/Fuzzer/test/fuzzer-trunc.test new file mode 100644 index 00000000000..ebab7b863a0 --- /dev/null +++ b/llvm/lib/Fuzzer/test/fuzzer-trunc.test @@ -0,0 +1,10 @@ +# Test truncate_units option. +RUN: rm -rf FuzzerTruncateTestCORPUS +RUN: mkdir FuzzerTruncateTestCORPUS +RUN: echo "01234567890123456789012345678901234567890" > FuzzerTruncateTestCORPUS/unit1 +# Simply running a fuzzer won't produce new results +RUN: LLVMFuzzer-EmptyTest -seed=1 -runs=100 -truncate_units=0 ./FuzzerTruncateTestCORPUS +# Truncating would create a new unit of length 1. +RUN: LLVMFuzzer-EmptyTest -seed=1 -runs=0 -truncate_units=1 ./FuzzerTruncateTestCORPUS +RUN: find FuzzerTruncateTestCORPUS/b6589fc6ab0dc82cf12099d1c2d40ab994e8410c +RUN: rm -rf FuzzerTruncateTestCORPUS |
