fix: 'env.sh' is optional, ignore it in shellcheck
[babeltrace.git] / tests / utils / utils.sh
index a6b17dbe17c17edd4a96314334a180148b052974..18b5482362bac98e07e8bd7465c85e741873ee31 100644 (file)
@@ -25,51 +25,50 @@ fi
 # We do a bit of translation to ease our life down the road for comparison.
 # Export it so that called executables can use it.
 # [1] https://en.wikipedia.org/wiki/Uname#Examples
-if [ "x${BT_OS_TYPE:-}" = "x" ]; then
-       BT_OS_TYPE="$(uname -s)"
-       case "$BT_OS_TYPE" in
+if [ -z "${BT_TESTS_OS_TYPE:-}" ]; then
+       BT_TESTS_OS_TYPE="$(uname -s)"
+       case "$BT_TESTS_OS_TYPE" in
        MINGW*)
-               BT_OS_TYPE="mingw"
+               BT_TESTS_OS_TYPE="mingw"
                ;;
        Darwin)
-               BT_OS_TYPE="darwin"
+               BT_TESTS_OS_TYPE="darwin"
                ;;
        Linux)
-               BT_OS_TYPE="linux"
+               BT_TESTS_OS_TYPE="linux"
                ;;
        CYGWIN*)
-               BT_OS_TYPE="cygwin"
+               BT_TESTS_OS_TYPE="cygwin"
                ;;
        *)
-               BT_OS_TYPE="unsupported"
+               BT_TESTS_OS_TYPE="unsupported"
                ;;
        esac
 fi
-export BT_OS_TYPE
+export BT_TESTS_OS_TYPE
 
 # Allow overriding the source and build directories
-if [ "x${BT_TESTS_SRCDIR:-}" = "x" ]; then
+if [ -z "${BT_TESTS_SRCDIR:-}" ]; then
        BT_TESTS_SRCDIR="$testsdir"
 fi
 export BT_TESTS_SRCDIR
 
-if [ "x${BT_TESTS_BUILDDIR:-}" = "x" ]; then
+if [ -z "${BT_TESTS_BUILDDIR:-}" ]; then
        BT_TESTS_BUILDDIR="$testsdir"
 fi
 export BT_TESTS_BUILDDIR
 
-# By default, it will not source tap.sh.  If you to tap output directly from
-# the test script, define the 'SH_TAP' variable to '1' before sourcing this
-# script.
-if [ "x${SH_TAP:-}" = x1 ]; then
-       # shellcheck source=./tap/tap.sh
-       . "${BT_TESTS_SRCDIR}/utils/tap/tap.sh"
+
+# Source the generated environment file if it's present.
+if [ -f "${BT_TESTS_BUILDDIR}/utils/env.sh" ]; then
+       # shellcheck disable=SC1091
+       . "${BT_TESTS_BUILDDIR}/utils/env.sh"
 fi
 
 # Allow overriding the babeltrace2 executables
-if [ "x${BT_TESTS_BT2_BIN:-}" = "x" ]; then
+if [ -z "${BT_TESTS_BT2_BIN:-}" ]; then
        BT_TESTS_BT2_BIN="$BT_TESTS_BUILDDIR/../src/cli/babeltrace2"
-       if [ "$BT_OS_TYPE" = "mingw" ]; then
+       if [ "$BT_TESTS_OS_TYPE" = "mingw" ]; then
                BT_TESTS_BT2_BIN="${BT_TESTS_BT2_BIN}.exe"
        fi
 fi
@@ -79,55 +78,82 @@ export BT_TESTS_BT2_BIN
 BT_PLUGINS_PATH="${BT_TESTS_BUILDDIR}/../src/plugins"
 
 # Allow overriding the babeltrace2 plugin path
-if [ "x${BT_TESTS_BABELTRACE_PLUGIN_PATH:-}" = "x" ]; then
+if [ -z "${BT_TESTS_BABELTRACE_PLUGIN_PATH:-}" ]; then
        BT_TESTS_BABELTRACE_PLUGIN_PATH="${BT_PLUGINS_PATH}/ctf:${BT_PLUGINS_PATH}/utils:${BT_PLUGINS_PATH}/text:${BT_PLUGINS_PATH}/lttng-utils"
 fi
+export BT_TESTS_BABELTRACE_PLUGIN_PATH
 
-if [ "x${BT_TESTS_PROVIDER_DIR:-}" = "x" ]; then
+if [ -z "${BT_TESTS_PROVIDER_DIR:-}" ]; then
        BT_TESTS_PROVIDER_DIR="${BT_TESTS_BUILDDIR}/../src/python-plugin-provider/.libs"
 fi
+export BT_TESTS_PROVIDER_DIR
 
 # Allow overriding the babeltrace2 executables
-if [ "x${BT_TESTS_PYTHONPATH:-}" = "x" ]; then
+if [ -z "${BT_TESTS_PYTHONPATH:-}" ]; then
        BT_TESTS_PYTHONPATH="${BT_TESTS_BUILDDIR}/../src/bindings/python/bt2/build/build_lib"
 fi
+export BT_TESTS_PYTHONPATH
 
 
 ### External Tools ###
-if [ "x${BT_TESTS_AWK_BIN:-}" = "x" ]; then
+if [ -z "${BT_TESTS_AWK_BIN:-}" ]; then
        BT_TESTS_AWK_BIN="awk"
 fi
 export BT_TESTS_AWK_BIN
 
-if [ "x${BT_TESTS_GREP_BIN:-}" = "x" ]; then
+if [ -z "${BT_TESTS_GREP_BIN:-}" ]; then
        BT_TESTS_GREP_BIN="grep"
 fi
 export BT_TESTS_GREP_BIN
 
-if [ "x${BT_TESTS_PYTHON_BIN:-}" = "x" ]; then
+if [ -z "${BT_TESTS_PYTHON_BIN:-}" ]; then
        BT_TESTS_PYTHON_BIN="python3"
 fi
 export BT_TESTS_PYTHON_BIN
 
-if [ "x${BT_TESTS_PYTHON_CONFIG_BIN:-}" = "x" ]; then
+BT_TESTS_PYTHON_VERSION=$($BT_TESTS_PYTHON_BIN -c 'import sys; print("{}.{}".format(sys.version_info.major, sys.version_info.minor))')
+
+if [ -z "${BT_TESTS_PYTHON_CONFIG_BIN:-}" ]; then
        BT_TESTS_PYTHON_CONFIG_BIN="python3-config"
 fi
 export BT_TESTS_PYTHON_CONFIG_BIN
 
-if [ "x${BT_TESTS_SED_BIN:-}" = "x" ]; then
+if [ -z "${BT_TESTS_SED_BIN:-}" ]; then
        BT_TESTS_SED_BIN="sed"
 fi
 export BT_TESTS_SED_BIN
 
+if [ -z "${BT_TESTS_CC_BIN:-}" ]; then
+       BT_TESTS_CC_BIN="cc"
+fi
+export BT_TESTS_CC_BIN
+
+
+### Optional features ###
+
+if [ -z "${BT_TESTS_ENABLE_ASAN:-}" ]; then
+       BT_TESTS_ENABLE_ASAN="0"
+fi
+export BT_TESTS_ENABLE_ASAN
+
 
 # Data files path
 BT_TESTS_DATADIR="${BT_TESTS_SRCDIR}/data"
 BT_CTF_TRACES_PATH="${BT_TESTS_DATADIR}/ctf-traces"
 
+# By default, it will not source tap.sh.  If you want to output tap directly
+# from the test script, define the 'SH_TAP' variable to '1' before sourcing
+# this script.
+if [ "${SH_TAP:-}" = 1 ]; then
+       # shellcheck source=./tap/tap.sh
+       . "${BT_TESTS_SRCDIR}/utils/tap/tap.sh"
+fi
+
+
 # Remove CR characters in file "$1".
 
 bt_remove_cr() {
-       "$BT_TESTS_SED_BIN" -i 's/\r//g' "$1"
+       "$BT_TESTS_SED_BIN" -i'' -e 's/\r//g' "$1"
 }
 
 # Run the Babeltrace CLI, redirecting stdout and stderr to specified files.
@@ -202,8 +228,8 @@ bt_diff_cli() {
        local ret_stdout
        local ret_stderr
 
-       temp_stdout_output_file="$(mktemp -t actual_stdout.XXXXXX)"
-       temp_stderr_output_file="$(mktemp -t actual_stderr.XXXXXX)"
+       temp_stdout_output_file="$(mktemp -t actual-stdout.XXXXXX)"
+       temp_stderr_output_file="$(mktemp -t actual-stderr.XXXXXX)"
 
        # Run the CLI to get a detailed file.
        bt_cli "$temp_stdout_output_file" "$temp_stderr_output_file" "${args[@]}"
@@ -271,6 +297,33 @@ bt_diff_details_ctf_gen_single() {
        return $ret
 }
 
+# Run the grep binary configured for the tests.
+bt_grep() {
+       "$BT_TESTS_GREP_BIN" "$@"
+}
+
+# ok() with the test name `$3` on the result of bt_grep() matching the
+# pattern `$1` within the file `$2`.
+bt_grep_ok() {
+       local pattern=$1
+       local file=$2
+       local test_name=$3
+
+       bt_grep --silent "$pattern" "$file"
+
+       local ret=$?
+
+       if ! ok $ret "$test_name"; then
+               {
+                       echo "Pattern \`$pattern\` doesn't match the contents of \`$file\`:"
+                       echo '--- 8< ---'
+                       cat "$file"
+                       echo '--- >8 ---'
+               } >&2
+       fi
+
+       return $ret
+}
 
 ### Functions ###
 
@@ -278,40 +331,69 @@ check_coverage() {
        coverage run "$@"
 }
 
+# Execute a shell command in the appropriate environment to access the Python
+# test utility modules in `tests/utils/python`.
+run_python() {
+       local our_pythonpath="${BT_TESTS_SRCDIR}/utils/python"
+
+       if [[ $BT_TESTS_PYTHON_VERSION =~ 3.[45] ]]; then
+               # Add a local directory containing a `typing.py` to `PYTHONPATH` for
+               # Python 3.4 which doesn't offer the `typing` module.
+               our_pythonpath="$our_pythonpath:${BT_TESTS_SRCDIR}/utils/python/typing"
+       fi
+
+       PYTHONPATH="${our_pythonpath}${PYTHONPATH:+:}${PYTHONPATH:-}" "$@"
+}
+
 # Execute a shell command in the appropriate environment to have access to the
 # bt2 Python bindings.
 run_python_bt2() {
-       local env_args
-
-       env_args=(
-               "BABELTRACE_PYTHON_BT2_NO_TRACEBACK=1" \
-               "BABELTRACE_PLUGIN_PATH=${BT_TESTS_BABELTRACE_PLUGIN_PATH}" \
-               "LIBBABELTRACE2_PLUGIN_PROVIDER_DIR=${BT_TESTS_PROVIDER_DIR}" \
-               "BT_TESTS_DATADIR=${BT_TESTS_DATADIR}" \
-               "BT_CTF_TRACES_PATH=${BT_CTF_TRACES_PATH}" \
-               "BT_PLUGINS_PATH=${BT_PLUGINS_PATH}" \
-               "PYTHONPATH=${BT_TESTS_PYTHONPATH}:${BT_TESTS_SRCDIR}/utils/python"
-               )
+       local lib_asan
+       local -x "BABELTRACE_PYTHON_BT2_NO_TRACEBACK=1"
+       local -x "BABELTRACE_PLUGIN_PATH=${BT_TESTS_BABELTRACE_PLUGIN_PATH}"
+       local -x "LIBBABELTRACE2_PLUGIN_PROVIDER_DIR=${BT_TESTS_PROVIDER_DIR}"
+       local -x "BT_TESTS_DATADIR=${BT_TESTS_DATADIR}"
+       local -x "BT_CTF_TRACES_PATH=${BT_CTF_TRACES_PATH}"
+       local -x "BT_PLUGINS_PATH=${BT_PLUGINS_PATH}"
+       local -x "PYTHONPATH=${BT_TESTS_PYTHONPATH}${PYTHONPATH:+:}${PYTHONPATH:-}"
 
        local main_lib_path="${BT_TESTS_BUILDDIR}/../src/lib/.libs"
 
        # Set the library search path so the python interpreter can load libbabeltrace2
-       if [ "$BT_OS_TYPE" = "mingw" ] || [ "$BT_OS_TYPE" = "cygwin" ]; then
-               env_args+=("PATH=${main_lib_path}:${PATH:-}")
-       elif [ "$BT_OS_TYPE" = "darwin" ]; then
-               env_args+=("DYLD_LIBRARY_PATH=${main_lib_path}:${DYLD_LIBRARY_PATH:-}")
+       if [ "$BT_TESTS_OS_TYPE" = "mingw" ] || [ "$BT_TESTS_OS_TYPE" = "cygwin" ]; then
+               local -x PATH="${main_lib_path}${PATH:+:}${PATH:-}"
+       elif [ "$BT_TESTS_OS_TYPE" = "darwin" ]; then
+               local -x DYLD_LIBRARY_PATH="${main_lib_path}${DYLD_LIBRARY_PATH:+:}${DYLD_LIBRARY_PATH:-}"
        else
-               env_args+=("LD_LIBRARY_PATH=${main_lib_path}:${LD_LIBRARY_PATH:-}")
+               local -x LD_LIBRARY_PATH="${main_lib_path}${LD_LIBRARY_PATH:+:}${LD_LIBRARY_PATH:-}"
        fi
 
        # On Windows, an embedded Python interpreter needs a way to locate the path
-       # to it's internal modules, set the prefix from python-config to the
+       # to its internal modules, set the prefix from python-config to the
        # PYTHONHOME variable.
-       if [ "$BT_OS_TYPE" = "mingw" ]; then
-               env_args+=("PYTHONHOME=$($BT_TESTS_PYTHON_CONFIG_BIN --prefix)")
+       if [ "$BT_TESTS_OS_TYPE" = "mingw" ]; then
+               local -x PYTHONHOME
+
+               PYTHONHOME=$($BT_TESTS_PYTHON_CONFIG_BIN --prefix)
+       fi
+
+       # If AddressSanitizer is used, we must preload libasan.so so that
+       # libasan doesn't complain about not being the first loaded library.
+       #
+       # Python and sed (executed as part of the libtool wrapper) produce some
+       # leaks, so we must unfortunately disable leak detection.  Append it to
+       # existing ASAN_OPTIONS, such that we override the user's value if it
+       # contains detect_leaks=1.
+       if [ "${BT_TESTS_ENABLE_ASAN:-}" = "1" ]; then
+               if ${BT_TESTS_CC_BIN} --version | head -n 1 | bt_grep -q '^gcc'; then
+                       lib_asan="$(${BT_TESTS_CC_BIN} -print-file-name=libasan.so)"
+                       local -x LD_PRELOAD="${lib_asan}${LD_PRELOAD:+:}${LD_PRELOAD:-}"
+               fi
+
+               local -x  "ASAN_OPTIONS=${ASAN_OPTIONS:-}${ASAN_OPTIONS:+,}detect_leaks=0"
        fi
 
-       env "${env_args[@]}" "$@"
+       run_python "$@"
 }
 
 # Set the environment and run python tests in the directory.
@@ -326,11 +408,11 @@ run_python_bt2_test() {
        local test_runner_args=()
 
        test_runner_args+=("$test_dir")
-       if [ "x${test_pattern}" != "x" ]; then
+       if [ -n "${test_pattern}" ]; then
                test_runner_args+=("${test_pattern}")
        fi
 
-       if test "x${BT_TESTS_COVERAGE:-}" = "x1"; then
+       if test "${BT_TESTS_COVERAGE:-}" = "1"; then
                python_exec="check_coverage"
        else
                python_exec="${BT_TESTS_PYTHON_BIN}"
@@ -344,13 +426,26 @@ run_python_bt2_test() {
 
        ret=$?
 
-       if test "x${BT_TESTS_COVERAGE_REPORT:-}" = "x1"; then
+       if test "${BT_TESTS_COVERAGE_REPORT:-}" = "1"; then
                coverage report -m
        fi
 
-       if test "x${BT_TESTS_COVERAGE_HTML:-}" = "x1"; then
+       if test "${BT_TESTS_COVERAGE_HTML:-}" = "1"; then
                coverage html
        fi
 
        return $ret
 }
+
+# Generate a CTF trace using `mctf.py`.
+#
+# $1: Input filename
+# $2: Base directory path for output files
+gen_mctf_trace() {
+       local input_file="$1"
+       local base_dir="$2"
+
+       diag "Running: ${BT_TESTS_PYTHON_BIN} ${BT_TESTS_SRCDIR}/utils/python/mctf.py --base-dir ${base_dir} ${input_file}"
+       run_python "${BT_TESTS_PYTHON_BIN}" "${BT_TESTS_SRCDIR}/utils/python/mctf.py" \
+               --base-dir "${base_dir}" "${input_file}"
+}
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