tests/utils/utils.sh

   1 #!/bin/bash
   2
   3 # Copyright (c) 2019 Michael Jeanson <mjeanson@efficios.com>
   4 # Copyright (C) 2019 Philippe Proulx <pproulx@efficios.com>
   5 #
   6 # This program is free software; you can redistribute it and/or modify
   7 # it under the terms of the GNU General Public License as published by
   8 # the Free Software Foundation; under version 2 of the License.
   9 #
  10 # This program is distributed in the hope that it will be useful,
  11 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 # GNU General Public License for more details.
  14 #
  15 # You should have received a copy of the GNU General Public License along
  16 # with this program; if not, write to the Free Software Foundation, Inc.,
  17 # 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18
  19 # This file is meant to be sourced at the start of shell script-based tests.
  20
  21
  22 # Error out when encountering an undefined variable
  23 set -u
  24
  25 # If "readlink -f" is available, get a resolved absolute path to the
  26 # tests source dir, otherwise make do with a relative path.
  27 scriptdir="$(dirname "${BASH_SOURCE[0]}")"
  28 if readlink -f "." >/dev/null 2>&1; then
  29         testsdir=$(readlink -f "$scriptdir/..")
  30 else
  31         testsdir="$scriptdir/.."
  32 fi
  33
  34 # The OS on which we are running. See [1] for possible values of 'uname -s'.
  35 # We do a bit of translation to ease our life down the road for comparison.
  36 # Export it so that called executables can use it.
  37 # [1] https://en.wikipedia.org/wiki/Uname#Examples
  38 if [ "x${BT_OS_TYPE:-}" = "x" ]; then
  39         BT_OS_TYPE="$(uname -s)"
  40         case "$BT_OS_TYPE" in
  41         MINGW*)
  42                 BT_OS_TYPE="mingw"
  43                 ;;
  44         Darwin)
  45                 BT_OS_TYPE="darwin"
  46                 ;;
  47         Linux)
  48                 BT_OS_TYPE="linux"
  49                 ;;
  50         CYGWIN*)
  51                 BT_OS_TYPE="cygwin"
  52                 ;;
  53         *)
  54                 BT_OS_TYPE="unsupported"
  55                 ;;
  56         esac
  57 fi
  58 export BT_OS_TYPE
  59
  60 # Allow overriding the source and build directories
  61 if [ "x${BT_TESTS_SRCDIR:-}" = "x" ]; then
  62         BT_TESTS_SRCDIR="$testsdir"
  63 fi
  64 export BT_TESTS_SRCDIR
  65
  66 if [ "x${BT_TESTS_BUILDDIR:-}" = "x" ]; then
  67         BT_TESTS_BUILDDIR="$testsdir"
  68 fi
  69 export BT_TESTS_BUILDDIR
  70
  71 # By default, it will not source tap.sh.  If you to tap output directly from
  72 # the test script, define the 'SH_TAP' variable to '1' before sourcing this
  73 # script.
  74 if [ "x${SH_TAP:-}" = x1 ]; then
  75         # shellcheck source=./tap/tap.sh
  76         . "${BT_TESTS_SRCDIR}/utils/tap/tap.sh"
  77 fi
  78
  79 # Allow overriding the babeltrace2 executables
  80 if [ "x${BT_TESTS_BT2_BIN:-}" = "x" ]; then
  81         BT_TESTS_BT2_BIN="$BT_TESTS_BUILDDIR/../src/cli/babeltrace2"
  82         if [ "$BT_OS_TYPE" = "mingw" ]; then
  83                 BT_TESTS_BT2_BIN="${BT_TESTS_BT2_BIN}.exe"
  84         fi
  85 fi
  86 export BT_TESTS_BT2_BIN
  87
  88 # TODO: Remove when bindings/python/bt2/test_plugin.py is fixed
  89 BT_PLUGINS_PATH="${BT_TESTS_BUILDDIR}/../src/plugins"
  90
  91 # Allow overriding the babeltrace2 plugin path
  92 if [ "x${BT_TESTS_BABELTRACE_PLUGIN_PATH:-}" = "x" ]; then
  93         BT_TESTS_BABELTRACE_PLUGIN_PATH="${BT_PLUGINS_PATH}/ctf:${BT_PLUGINS_PATH}/utils:${BT_PLUGINS_PATH}/text"
  94 fi
  95
  96 if [ "x${BT_TESTS_PROVIDER_DIR:-}" = "x" ]; then
  97         BT_TESTS_PROVIDER_DIR="${BT_TESTS_BUILDDIR}/../src/python-plugin-provider/.libs"
  98 fi
  99
 100 # Allow overriding the babeltrace2 executables
 101 if [ "x${BT_TESTS_PYTHONPATH:-}" = "x" ]; then
 102         BT_TESTS_PYTHONPATH="${BT_TESTS_BUILDDIR}/../src/bindings/python/bt2/build/build_lib"
 103 fi
 104
 105
 106 ### External Tools ###
 107 if [ "x${BT_TESTS_AWK_BIN:-}" = "x" ]; then
 108         BT_TESTS_AWK_BIN="awk"
 109 fi
 110 export BT_TESTS_AWK_BIN
 111
 112 if [ "x${BT_TESTS_GREP_BIN:-}" = "x" ]; then
 113         BT_TESTS_GREP_BIN="grep"
 114 fi
 115 export BT_TESTS_GREP_BIN
 116
 117 if [ "x${BT_TESTS_PYTHON_BIN:-}" = "x" ]; then
 118         BT_TESTS_PYTHON_BIN="python3"
 119 fi
 120 export BT_TESTS_PYTHON_BIN
 121
 122 if [ "x${BT_TESTS_PYTHON_CONFIG_BIN:-}" = "x" ]; then
 123         BT_TESTS_PYTHON_CONFIG_BIN="python3-config"
 124 fi
 125 export BT_TESTS_PYTHON_CONFIG_BIN
 126
 127 if [ "x${BT_TESTS_SED_BIN:-}" = "x" ]; then
 128         BT_TESTS_SED_BIN="sed"
 129 fi
 130 export BT_TESTS_SED_BIN
 131
 132
 133 # Data files path
 134 BT_TESTS_DATADIR="${BT_TESTS_SRCDIR}/data"
 135 BT_CTF_TRACES_PATH="${BT_TESTS_DATADIR}/ctf-traces"
 136
 137 # Run the Babeltrace CLI, redirecting stdout and stderr to specified files.
 138 #
 139 #   $1: file to redirect stdout to
 140 #   $2: file to redirect stderr to
 141 #   remaining args: arguments to pass to the CLI
 142 #
 143 # Return the exit code of the CLI.
 144
 145 bt_cli() {
 146         local stdout_file="$1"
 147         local stderr_file="$2"
 148         shift 2
 149         local args=("$@")
 150
 151         run_python_bt2 "$BT_TESTS_BT2_BIN" "${args[@]}" 1>"$stdout_file" 2>"$stderr_file"
 152 }
 153
 154 ### Diff Functions ###
 155
 156 # Checks the difference between stdout:
 157 #
 158 #   The file with path "$1", and the file with path "$2"
 159 #
 160 # And the difference between stderr:
 161 #
 162 #   The file with path "$3", and the file with path "$4"
 163 #
 164 # Returns 0 if there's no difference, and 1 if there is, also printing
 165 # said difference to the standard error, and an error message with the
 166 # args starting at "$5".
 167 bt_diff() {
 168         local expected_stdout_file="$1"
 169         local actual_stdout_file="$2"
 170         local expected_stderr_file="$3"
 171         local actual_stderr_file="$4"
 172         shift 4
 173         local args=("$@")
 174
 175         local ret=0
 176         local temp_diff
 177
 178         temp_diff="$(mktemp -t diff.XXXXXX)"
 179
 180         # Strip any \r present due to Windows (\n -> \r\n).
 181         # "diff --string-trailing-cr" is not used since it is not present on
 182         # Solaris.
 183         "$BT_TESTS_SED_BIN" -i 's/\r//g' "$actual_stdout_file"
 184         "$BT_TESTS_SED_BIN" -i 's/\r//g' "$actual_stderr_file"
 185
 186         # Compare stdout output with expected stdout output
 187         if ! diff -u "$actual_stdout_file" "$expected_stdout_file" 2>/dev/null >"$temp_diff"; then
 188                 echo "ERROR: for '${args[*]}': actual standard output and expected output differ:" >&2
 189                 cat "$temp_diff" >&2
 190                 ret=1
 191         fi
 192
 193         # Compare stderr output with expected stderr output
 194         if ! diff -u "$actual_stderr_file" "$expected_stderr_file" 2>/dev/null >"$temp_diff"; then
 195                 echo "ERROR: for '${args[*]}': actual standard error and expected error differ:" >&2
 196                 cat "$temp_diff" >&2
 197                 ret=1
 198         fi
 199
 200         rm -f "$temp_diff"
 201
 202         return $ret
 203 }
 204
 205 # Checks the difference between:
 206 #
 207 #   1. What the CLI outputs on its standard output when given the arguments
 208 #   "$@" (excluding the first two arguments).
 209 #   2. The file with path "$1".
 210 #
 211 # And the difference between:
 212 #
 213 #   1. What the CLI outputs on its standard error when given the arguments
 214 #   "$@" (excluding the first two arguments).
 215 #   2. The file with path "$2".
 216 #
 217 # Returns 0 if there's no difference, and 1 if there is, also printing
 218 # said difference to the standard error.
 219 bt_diff_cli() {
 220         local expected_stdout_file="$1"
 221         local expected_stderr_file="$2"
 222         shift 2
 223         local args=("$@")
 224
 225         local temp_stdout_output_file
 226         local temp_stderr_output_file
 227         local ret=0
 228
 229         temp_stdout_output_file="$(mktemp -t actual_stdout.XXXXXX)"
 230         temp_stderr_output_file="$(mktemp -t actual_stderr.XXXXXX)"
 231
 232         # Run the CLI to get a detailed file.
 233         bt_cli "$temp_stdout_output_file" "$temp_stderr_output_file" "${args[@]}"
 234
 235         bt_diff "$expected_stdout_file" "$temp_stdout_output_file" "$expected_stderr_file" "$temp_stderr_output_file" "${args[@]}"
 236         ret=$?
 237
 238         rm -f "$temp_stdout_output_file" "$temp_stderr_output_file"
 239
 240         return $ret
 241 }
 242
 243 # Checks the difference between:
 244 #
 245 #   1. What the CLI outputs on its standard output when given the arguments
 246 #   "$@" (excluding the first two arguments), sorted with the default "sort".
 247 #   2. The file with path "$1".
 248 #
 249 # And the difference between:
 250 #
 251 #   1. What the CLI outputs on its standard error when given the arguments
 252 #   "$@" (excluding the first two arguments).
 253 #   2. The file with path "$2".
 254 #
 255 # Returns 0 if there's no difference, and 1 if there is, also printing
 256 # said difference to the standard error.
 257 bt_diff_cli_sorted() {
 258         local expected_stdout_file="$1"
 259         local expected_stderr_file="$2"
 260         shift 2
 261         local args=("$@")
 262
 263         local temp_stdout_output_file
 264         local temp_stderr_output_file
 265         local ret=0
 266
 267         temp_stdout_output_file="$(mktemp -t actual_stdout.XXXXXX)"
 268         temp_stderr_output_file="$(mktemp -t actual_stderr.XXXXXX)"
 269
 270         # Run the CLI to get a detailed file.
 271         bt_cli "$temp_stdout_output_file" "$temp_stderr_output_file" "${args[@]}"
 272
 273         # Sort the stdout file, use a subshell to do it in-place
 274         # shellcheck disable=SC2005
 275         echo "$(LC_ALL=C sort "$temp_stdout_output_file")" > "$temp_stdout_output_file"
 276
 277         bt_diff "$expected_stdout_file" "$temp_stdout_output_file" "$expected_stderr_file" "$temp_stderr_output_file" "${args[@]}"
 278         ret=$?
 279
 280         rm -f "$temp_stdout_output_file" "$temp_stderr_output_file"
 281
 282         return $ret
 283 }
 284
 285 # Checks the difference between the content of the file with path "$1"
 286 # and the output of the CLI when called on the directory path "$2" with
 287 # the arguments '-c sink.text.details' and the rest of the arguments to
 288 # this function.
 289 #
 290 # Returns 0 if there's no difference, and 1 if there is, also printing
 291 # said difference to the standard error.
 292 bt_diff_details_ctf_single() {
 293         local expected_stdout_file="$1"
 294         local trace_dir="$2"
 295         shift 2
 296         local extra_details_args=("$@")
 297         expected_stderr_file="/dev/null"
 298
 299         # Compare using the CLI with `sink.text.details`
 300         bt_diff_cli "$expected_stdout_file" "$expected_stderr_file" "$trace_dir" "-c" "sink.text.details" "${extra_details_args[@]}"
 301 }
 302
 303 # Calls bt_diff_details_ctf_single(), except that "$1" is the path to a
 304 # program which generates the CTF trace to compare to. The program "$1"
 305 # receives the path to a temporary, empty directory where to write the
 306 # CTF trace as its first argument.
 307 bt_diff_details_ctf_gen_single() {
 308         local ctf_gen_prog_path="$1"
 309         local expected_stdout_file="$2"
 310         shift 2
 311         local extra_details_args=("$@")
 312
 313         local temp_trace_dir
 314         local ret
 315
 316         temp_trace_dir="$(mktemp -d)"
 317
 318         # Run the CTF trace generator program to get a CTF trace
 319         if ! "$ctf_gen_prog_path" "$temp_trace_dir" 2>/dev/null; then
 320                 echo "ERROR: \"$ctf_gen_prog_path\" \"$temp_trace_dir\" failed" >&2
 321                 rm -rf "$temp_trace_dir"
 322                 return 1
 323         fi
 324
 325         # Compare using the CLI with `sink.text.details`
 326         bt_diff_details_ctf_single "$expected_stdout_file" "$temp_trace_dir" "${extra_details_args[@]}"
 327         ret=$?
 328         rm -rf "$temp_trace_dir"
 329         return $ret
 330 }
 331
 332
 333 ### Functions ###
 334
 335 check_coverage() {
 336         coverage run "$@"
 337 }
 338
 339 # Execute a shell command in the appropriate environment to have access to the
 340 # bt2 Python bindings.
 341 run_python_bt2() {
 342         local env_args
 343
 344         env_args=(
 345                 "BABELTRACE_PYTHON_BT2_NO_TRACEBACK=1" \
 346                 "BABELTRACE_PLUGIN_PATH=${BT_TESTS_BABELTRACE_PLUGIN_PATH}" \
 347                 "LIBBABELTRACE2_PLUGIN_PROVIDER_DIR=${BT_TESTS_PROVIDER_DIR}" \
 348                 "BT_CTF_TRACES_PATH=${BT_CTF_TRACES_PATH}" \
 349                 "BT_PLUGINS_PATH=${BT_PLUGINS_PATH}" \
 350                 "PYTHONPATH=${BT_TESTS_PYTHONPATH}:${BT_TESTS_SRCDIR}/utils/python"
 351                 )
 352
 353         local main_lib_path="${BT_TESTS_BUILDDIR}/../src/lib/.libs"
 354
 355         # Set the library search path so the python interpreter can load libbabeltrace2
 356         if [ "$BT_OS_TYPE" = "mingw" ] || [ "$BT_OS_TYPE" = "cygwin" ]; then
 357                 env_args+=("PATH=${main_lib_path}:${PATH:-}")
 358         elif [ "$BT_OS_TYPE" = "darwin" ]; then
 359                 env_args+=("DYLD_LIBRARY_PATH=${main_lib_path}:${DYLD_LIBRARY_PATH:-}")
 360         else
 361                 env_args+=("LD_LIBRARY_PATH=${main_lib_path}:${LD_LIBRARY_PATH:-}")
 362         fi
 363
 364         # On Windows, an embedded Python interpreter needs a way to locate the path
 365         # to it's internal modules, set the prefix from python-config to the
 366         # PYTHONHOME variable.
 367         if [ "$BT_OS_TYPE" = "mingw" ]; then
 368                 env_args+=("PYTHONHOME=$($BT_TESTS_PYTHON_CONFIG_BIN --prefix)")
 369         fi
 370
 371         env "${env_args[@]}" "$@"
 372 }
 373
 374 # Set the environment and run python tests in the directory.
 375 #
 376 # $1 : The directory containing the python test scripts
 377 # $2 : The pattern to match python test script names (optional)
 378 run_python_bt2_test() {
 379         local test_dir="$1"
 380         local test_pattern="${2:-'*'}" # optional, if none default to "*"
 381
 382         local ret
 383         local test_runner_args=()
 384
 385         test_runner_args+=("$test_dir")
 386         if [ "x${test_pattern}" != "x" ]; then
 387                 test_runner_args+=("${test_pattern}")
 388         fi
 389
 390         if test "x${BT_TESTS_COVERAGE:-}" = "x1"; then
 391                 python_exec="check_coverage"
 392         else
 393                 python_exec="${BT_TESTS_PYTHON_BIN}"
 394         fi
 395
 396         run_python_bt2 \
 397                 "${python_exec}" \
 398                 "${BT_TESTS_SRCDIR}/utils/python/testrunner.py" \
 399                 --pattern "$test_pattern" \
 400                 "$test_dir" \
 401
 402         ret=$?
 403
 404         if test "x${BT_TESTS_COVERAGE_REPORT:-}" = "x1"; then
 405                 coverage report -m
 406         fi
 407
 408         if test "x${BT_TESTS_COVERAGE_HTML:-}" = "x1"; then
 409                 coverage html
 410         fi
 411
 412         return $ret
 413 }