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      1 #!/bin/bash
      2 #
      3 # Copyright (c) 2011 The Chromium Authors. All rights reserved.
      4 # Use of this source code is governed by a BSD-style license that can be
      5 # found in the LICENSE file.
      6 #
      7 # Hacky, primitive testing: This runs the style plugin for a set of input files
      8 # and compares the output with golden result files.
      9 
     10 E_BADARGS=65
     11 E_FAILEDTEST=1
     12 
     13 failed_any_test=
     14 
     15 # Prints usage information.
     16 usage() {
     17   echo "Usage: $(basename "${0}")" \
     18     "<path to clang>" \
     19     "<path to plugin>"
     20   echo ""
     21   echo "  Runs all the libFindBadConstructs unit tests"
     22   echo ""
     23 }
     24 
     25 # Runs a single test case.
     26 do_testcase() {
     27   local flags=""
     28   if [ -e "${3}" ]; then
     29     flags="$(cat "${3}")"
     30   fi
     31 
     32   if [ "$(uname -s)" = "Darwin" ]; then
     33     flags="${flags} -isysroot $(xcrun --show-sdk-path) -stdlib=libstdc++"
     34   fi
     35 
     36   local output="$("${CLANG_PATH}" -c -Wno-c++11-extensions \
     37       -Xclang -load -Xclang "${PLUGIN_PATH}" \
     38       -Xclang -add-plugin -Xclang find-bad-constructs ${flags} ${1} 2>&1)"
     39   local diffout="$(echo "${output}" | diff - "${2}")"
     40   if [ "${diffout}" = "" ]; then
     41     echo "PASS: ${1}"
     42   else
     43     failed_any_test=yes
     44     echo "FAIL: ${1}"
     45     echo "Output of compiler:"
     46     echo "${output}"
     47     echo "Expected output:"
     48     cat "${2}"
     49     echo
     50   fi
     51 }
     52 
     53 # Validate input to the script.
     54 if [[ -z "${1}" ]]; then
     55   usage
     56   exit ${E_BADARGS}
     57 elif [[ -z "${2}" ]]; then
     58   usage
     59   exit ${E_BADARGS}
     60 elif [[ ! -x "${1}" ]]; then
     61   echo "${1} is not an executable"
     62   usage
     63   exit ${E_BADARGS}
     64 elif [[ ! -f "${2}" ]]; then
     65   echo "${2} could not be found"
     66   usage
     67   exit ${E_BADARGS}
     68 else
     69   export CLANG_PATH="${1}"
     70   export PLUGIN_PATH="${2}"
     71   echo "Using clang ${CLANG_PATH}..."
     72   echo "Using plugin ${PLUGIN_PATH}..."
     73 
     74   # The golden files assume that the cwd is this directory. To make the script
     75   # work no matter what the cwd is, explicitly cd to there.
     76   cd "$(dirname "${0}")"
     77 fi
     78 
     79 for input in *.cpp; do
     80   do_testcase "${input}" "${input%cpp}txt" "${input%cpp}flags"
     81 done
     82 
     83 for input in *.c; do
     84   do_testcase "${input}" "${input%c}txt" "${input%c}flags"
     85 done
     86 
     87 if [[ "${failed_any_test}" ]]; then
     88   exit ${E_FAILEDTEST}
     89 fi
     90