Bisect clang

tools/clang/plugins/tests/test.sh

+#!/bin/bash
+#
+# Copyright (c) 2011 The Chromium Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+#
+# Hacky, primitive testing: This runs the style plugin for a set of input files
+# and compares the output with golden result files.
+
+E_BADARGS=65
+E_FAILEDTEST=1
+
+failed_any_test=
+
+THIS_DIR="$(dirname "${0}")"
+
+# Prints usage information.
+usage() {
+  echo "Usage: $(basename "${0}")" \
+    "<path to clang>" \
+    "<path to plugin>"
+  echo ""
+  echo "  Runs all the libFindBadConstructs unit tests"
+  echo ""
+}
+
+# Runs a single test case.
+do_testcase() {
+  local flags=""
+  if [ -e "${3}" ]; then
+    flags="$(cat "${3}")"
+  fi
+
+  # TODO(thakis): Remove once the tests are standalone, http://crbug.com/486559
+  if [[ "$(uname -s)" == "Darwin" ]]; then
+    flags="${flags} -isysroot $(xcrun --show-sdk-path)"
+  fi
+  if [[ "$(uname -s)" == "Darwin" && "${flags}" != *-target* ]]; then
+    flags="${flags} -stdlib=libstdc++"
+  fi
+
+  flags="${flags} -Xclang -plugin-arg-find-bad-constructs \
+      -Xclang with-ast-visitor"
+
+  local output="$("${CLANG_PATH}" -fsyntax-only -Wno-c++11-extensions \
+      -Wno-inconsistent-missing-override \
+      -isystem ${THIS_DIR}/system \
+      -Xclang -load -Xclang "${PLUGIN_PATH}" \
+      -Xclang -add-plugin -Xclang find-bad-constructs ${flags} ${1} 2>&1)"
+  local diffout="$(echo "${output}" | diff - "${2}")"
+  if [ "${diffout}" = "" ]; then
+    echo "PASS: ${1}"
+  else
+    failed_any_test=yes
+    echo "FAIL: ${1}"
+    echo "Output of compiler:"
+    echo "${output}"
+    cat > ${2}-actual << EOF
+${output}
+EOF
+
+    echo "Expected output:"
+    cat "${2}"
+    echo
+  fi
+}
+
+# Validate input to the script.
+if [[ -z "${1}" ]]; then
+  usage
+  exit ${E_BADARGS}
+elif [[ -z "${2}" ]]; then
+  usage
+  exit ${E_BADARGS}
+elif [[ ! -x "${1}" ]]; then
+  echo "${1} is not an executable"
+  usage
+  exit ${E_BADARGS}
+elif [[ ! -f "${2}" ]]; then
+  echo "${2} could not be found"
+  usage
+  exit ${E_BADARGS}
+else
+  export CLANG_PATH="${1}"
+  export PLUGIN_PATH="${2}"
+  echo "Using clang ${CLANG_PATH}..."
+  echo "Using plugin ${PLUGIN_PATH}..."
+
+  # The golden files assume that the cwd is this directory. To make the script
+  # work no matter what the cwd is, explicitly cd to there.
+  cd "${THIS_DIR}"
+fi
+
+for input in *.cpp; do
+  do_testcase "${input}" "${input%cpp}txt" "${input%cpp}flags"
+done
+
+for input in *.c; do
+  do_testcase "${input}" "${input%c}txt" "${input%c}flags"
+done
+
+if [[ "${failed_any_test}" ]]; then
+  exit ${E_FAILEDTEST}
+fi