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-rwxr-xr-xcontrib/devtools/test_deterministic_coverage.sh151
1 files changed, 151 insertions, 0 deletions
diff --git a/contrib/devtools/test_deterministic_coverage.sh b/contrib/devtools/test_deterministic_coverage.sh
new file mode 100755
index 0000000000..16d03e1fff
--- /dev/null
+++ b/contrib/devtools/test_deterministic_coverage.sh
@@ -0,0 +1,151 @@
+#!/usr/bin/env bash
+#
+# Copyright (c) 2019 The Bitcoin Core developers
+# Distributed under the MIT software license, see the accompanying
+# file COPYING or http://www.opensource.org/licenses/mit-license.php.
+#
+# Test for deterministic coverage across unit test runs.
+
+export LC_ALL=C
+
+# Use GCOV_EXECUTABLE="gcov" if compiling with gcc.
+# Use GCOV_EXECUTABLE="llvm-cov gcov" if compiling with clang.
+GCOV_EXECUTABLE="gcov"
+
+# Disable tests known to cause non-deterministic behaviour and document the source or point of non-determinism.
+NON_DETERMINISTIC_TESTS=(
+ "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()
+ "scheduler_tests/singlethreadedscheduler_ordered" # scheduler.cpp: CScheduler::serviceQueue()
+ "tx_validationcache_tests/checkinputs_test" # validation.cpp: if (GetMainSignals().CallbacksPending() > 10)
+ "tx_validationcache_tests/tx_mempool_block_doublespend" # validation.cpp: if (GetMainSignals().CallbacksPending() > 10)
+ "txindex_tests/txindex_initial_sync" # validation.cpp: if (GetMainSignals().CallbacksPending() > 10)
+ "txvalidation_tests/tx_mempool_reject_coinbase" # validation.cpp: if (GetMainSignals().CallbacksPending() > 10)
+ "validation_block_tests/processnewblock_signals_ordering" # validation.cpp: if (GetMainSignals().CallbacksPending() > 10)
+ "wallet_tests/coin_mark_dirty_immature_credit" # validation.cpp: if (GetMainSignals().CallbacksPending() > 10)
+ "wallet_tests/dummy_input_size_test" # validation.cpp: if (GetMainSignals().CallbacksPending() > 10)
+ "wallet_tests/importmulti_rescan" # validation.cpp: if (GetMainSignals().CallbacksPending() > 10)
+ "wallet_tests/importwallet_rescan" # validation.cpp: if (GetMainSignals().CallbacksPending() > 10)
+ "wallet_tests/ListCoins" # validation.cpp: if (GetMainSignals().CallbacksPending() > 10)
+ "wallet_tests/scan_for_wallet_transactions" # validation.cpp: if (GetMainSignals().CallbacksPending() > 10)
+ "wallet_tests/wallet_disableprivkeys" # validation.cpp: if (GetMainSignals().CallbacksPending() > 10)
+)
+
+TEST_BITCOIN_BINARY="src/test/test_bitcoin"
+
+print_usage() {
+ echo "Usage: $0 [custom test filter (default: all but known non-deterministic tests)] [number of test runs (default: 2)]"
+}
+
+N_TEST_RUNS=2
+BOOST_TEST_RUN_FILTERS=""
+if [[ $# != 0 ]]; then
+ if [[ $1 == "--help" ]]; then
+ print_usage
+ exit
+ fi
+ PARSED_ARGUMENTS=0
+ if [[ $1 =~ [a-z] ]]; then
+ BOOST_TEST_RUN_FILTERS=$1
+ PARSED_ARGUMENTS=$((PARSED_ARGUMENTS + 1))
+ shift
+ fi
+ if [[ $1 =~ ^[0-9]+$ ]]; then
+ N_TEST_RUNS=$1
+ PARSED_ARGUMENTS=$((PARSED_ARGUMENTS + 1))
+ shift
+ fi
+ if [[ ${PARSED_ARGUMENTS} == 0 || $# -gt 2 || ${N_TEST_RUNS} -lt 2 ]]; then
+ print_usage
+ exit
+ fi
+fi
+if [[ ${BOOST_TEST_RUN_FILTERS} == "" ]]; then
+ BOOST_TEST_RUN_FILTERS="$(IFS=":"; echo "!${NON_DETERMINISTIC_TESTS[*]}" | sed 's/:/:!/g')"
+else
+ echo "Using Boost test filter: ${BOOST_TEST_RUN_FILTERS}"
+ echo
+fi
+
+if ! command -v gcov > /dev/null; then
+ echo "Error: gcov not installed. Exiting."
+ exit 1
+fi
+
+if ! command -v gcovr > /dev/null; then
+ echo "Error: gcovr not installed. Exiting."
+ exit 1
+fi
+
+if [[ ! -e ${TEST_BITCOIN_BINARY} ]]; then
+ echo "Error: Executable ${TEST_BITCOIN_BINARY} not found. Run \"./configure --enable-lcov\" and compile."
+ exit 1
+fi
+
+get_file_suffix_count() {
+ find src/ -type f -name "*.$1" | wc -l
+}
+
+if [[ $(get_file_suffix_count gcno) == 0 ]]; then
+ echo "Error: Could not find any *.gcno files. The *.gcno files are generated by the compiler. Run \"./configure --enable-lcov\" and re-compile."
+ exit 1
+fi
+
+get_covr_filename() {
+ echo "gcovr.run-$1.txt"
+}
+
+TEST_RUN_ID=0
+while [[ ${TEST_RUN_ID} -lt ${N_TEST_RUNS} ]]; do
+ TEST_RUN_ID=$((TEST_RUN_ID + 1))
+ echo "[$(date +"%Y-%m-%d %H:%M:%S")] Measuring coverage, run #${TEST_RUN_ID} of ${N_TEST_RUNS}"
+ find src/ -type f -name "*.gcda" -exec rm {} \;
+ if [[ $(get_file_suffix_count gcda) != 0 ]]; then
+ echo "Error: Stale *.gcda files found. Exiting."
+ exit 1
+ fi
+ TEST_OUTPUT_TEMPFILE=$(mktemp)
+ if ! BOOST_TEST_RUN_FILTERS="${BOOST_TEST_RUN_FILTERS}" ${TEST_BITCOIN_BINARY} > "${TEST_OUTPUT_TEMPFILE}" 2>&1; then
+ cat "${TEST_OUTPUT_TEMPFILE}"
+ rm "${TEST_OUTPUT_TEMPFILE}"
+ exit 1
+ fi
+ rm "${TEST_OUTPUT_TEMPFILE}"
+ if [[ $(get_file_suffix_count gcda) == 0 ]]; then
+ echo "Error: Running the test suite did not create any *.gcda files. The gcda files are generated when the instrumented test programs are executed. Run \"./configure --enable-lcov\" and re-compile."
+ exit 1
+ fi
+ GCOVR_TEMPFILE=$(mktemp)
+ if ! gcovr --gcov-executable "${GCOV_EXECUTABLE}" -r src/ > "${GCOVR_TEMPFILE}"; then
+ echo "Error: gcovr failed. Output written to ${GCOVR_TEMPFILE}. Exiting."
+ exit 1
+ fi
+ GCOVR_FILENAME=$(get_covr_filename ${TEST_RUN_ID})
+ mv "${GCOVR_TEMPFILE}" "${GCOVR_FILENAME}"
+ if grep -E "^TOTAL *0 *0 " "${GCOVR_FILENAME}"; then
+ echo "Error: Spurious gcovr output. Make sure the correct GCOV_EXECUTABLE variable is set in $0 (\"gcov\" for gcc, \"llvm-cov gcov\" for clang)."
+ exit 1
+ fi
+ if [[ ${TEST_RUN_ID} != 1 ]]; then
+ COVERAGE_DIFF=$(diff -u "$(get_covr_filename 1)" "${GCOVR_FILENAME}")
+ if [[ ${COVERAGE_DIFF} != "" ]]; then
+ echo
+ echo "The line coverage is non-deterministic between runs. Exiting."
+ echo
+ echo "The test suite must be deterministic in the sense that the set of lines executed at least"
+ echo "once must be identical between runs. This is a necessary condition for meaningful"
+ echo "coverage measuring."
+ echo
+ echo "${COVERAGE_DIFF}"
+ exit 1
+ fi
+ rm "${GCOVR_FILENAME}"
+ fi
+done
+
+echo
+echo "Coverage test passed: Deterministic coverage across ${N_TEST_RUNS} runs."
+exit