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tests: Add script checking for deterministic line coverage
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,134 @@ | ||
| #!/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 | ||
|
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||
| # 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=( | ||
| "DoS_tests/DoS_mapOrphans" # RandomOrphan() | ||
| ) | ||
|
|
||
| TEST_BITCOIN_BINARY="src/test/test_pivx" | ||
|
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||
| 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 | ||
|
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||
| echo | ||
| echo "Coverage test passed: Deterministic coverage across ${N_TEST_RUNS} runs." | ||
| exit |