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-rwxr-xr-xcontrib/devtools/test_deterministic_coverage.sh1
-rw-r--r--src/test/denialofservice_tests.cpp20
2 files changed, 19 insertions, 2 deletions
diff --git a/contrib/devtools/test_deterministic_coverage.sh b/contrib/devtools/test_deterministic_coverage.sh
index 95b1553215..8501c72f04 100755
--- a/contrib/devtools/test_deterministic_coverage.sh
+++ b/contrib/devtools/test_deterministic_coverage.sh
@@ -16,7 +16,6 @@ GCOV_EXECUTABLE="gcov"
NON_DETERMINISTIC_TESTS=(
"blockfilter_index_tests/blockfilter_index_initial_sync" # src/checkqueue.h: In CCheckQueue::Loop(): while (queue.empty()) { ... }
"coinselector_tests/knapsack_solver_test" # coinselector_tests.cpp: if (equal_sets(setCoinsRet, setCoinsRet2))
- "denialofservice_tests/DoS_mapOrphans" # denialofservice_tests.cpp: it = mapOrphanTransactions.lower_bound(InsecureRand256());
"fs_tests/fsbridge_fstream" # deterministic test failure?
"miner_tests/CreateNewBlock_validity" # validation.cpp: if (GetMainSignals().CallbacksPending() > 10)
"scheduler_tests/manythreads" # scheduler.cpp: CScheduler::serviceQueue()
diff --git a/src/test/denialofservice_tests.cpp b/src/test/denialofservice_tests.cpp
index fdc63cd70e..b1a635d9da 100644
--- a/src/test/denialofservice_tests.cpp
+++ b/src/test/denialofservice_tests.cpp
@@ -4,10 +4,12 @@
// Unit tests for denial-of-service detection/prevention code
+#include <arith_uint256.h>
#include <banman.h>
#include <chainparams.h>
#include <net.h>
#include <net_processing.h>
+#include <pubkey.h>
#include <script/sign.h>
#include <script/signingprovider.h>
#include <script/standard.h>
@@ -314,10 +316,26 @@ static CTransactionRef RandomOrphan()
return it->second.tx;
}
+static void MakeNewKeyWithFastRandomContext(CKey& key)
+{
+ std::vector<unsigned char> keydata;
+ keydata = g_insecure_rand_ctx.randbytes(32);
+ key.Set(keydata.data(), keydata.data() + keydata.size(), /*fCompressedIn*/ true);
+ assert(key.IsValid());
+}
+
BOOST_AUTO_TEST_CASE(DoS_mapOrphans)
{
+ // This test had non-deterministic coverage due to
+ // randomly selected seeds.
+ // This seed is chosen so that all branches of the function
+ // ecdsa_signature_parse_der_lax are executed during this test.
+ // Specifically branches that run only when an ECDSA
+ // signature's R and S values have leading zeros.
+ g_insecure_rand_ctx = FastRandomContext(ArithToUint256(arith_uint256(33)));
+
CKey key;
- key.MakeNewKey(true);
+ MakeNewKeyWithFastRandomContext(key);
FillableSigningProvider keystore;
BOOST_CHECK(keystore.AddKey(key));