Add a helper script to run unit test targets for iOS

testing/gtest_ios/run-unittest.sh

Index: testing/gtest_ios/run-unittest.sh
diff --git a/testing/gtest_ios/run-unittest.sh b/testing/gtest_ios/run-unittest.sh
new file mode 100755
index 0000000000000000000000000000000000000000..b1d28fca4e0bdb6557fa2dcfd53583a5c412f467
--- /dev/null
+++ b/testing/gtest_ios/run-unittest.sh
@@ -0,0 +1,87 @@
+#!/bin/bash -p
+
+# Copyright (c) 2012 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.
+
+set -eu
+
+# Environment sanitization. Set a known-safe PATH. Clear environment variables
+# that might impact the interpreter's operation. The |bash -p| invocation
+# on the #! line takes the bite out of BASH_ENV, ENV, and SHELLOPTS (among
+# other features), but clearing them here ensures that they won't impact any
+# shell scripts used as utility programs. SHELLOPTS is read-only and can't be
+# unset, only unexported.
+export PATH="/usr/bin:/bin:/usr/sbin:/sbin"
+unset BASH_ENV CDPATH ENV GLOBIGNORE IFS POSIXLY_CORRECT
+export -n SHELLOPTS
+
+readonly ScriptDir=$(dirname "$(echo ${0} | sed -e "s,^\([^/]\),$(pwd)/\1,")")
+readonly ScriptName=$(basename "${0}")
+readonly ThisScript="${ScriptDir}/${ScriptName}"
+readonly SimExecutable="${BUILD_DIR}/${CONFIGURATION}/iossim"
+
+# Helper to print a line formatted for Xcodes build output parser.
+XcodeNote() {
+  echo "${ThisScript}:${1}: note: ${2}"
+}
+
+# Helper to print a divider to make things stick out in a busy output window.
+XcodeHeader() {
+  echo "note: _________________________________________________________________"
+  echo "note: _________________________________________________________________"
+  echo "note: _________________________________________________________________"
+  XcodeNote "$1" ">>>>>     $2"
+  echo "note: _________________________________________________________________"
+  echo "note: _________________________________________________________________"
+  echo "note: _________________________________________________________________"
+}
+
+# Kills the iPhone Simulator if it is running.
+KillSimulator() {
+  /usr/bin/killall "iPhone Simulator" 2> /dev/null || true
+}
+
+# Runs tests via the iPhone Simulator for multiple devices.
+RunTests() {
+  local -r appPath="${TARGET_BUILD_DIR}/${PRODUCT_NAME}.app"
+
+  if [[ ! -x "${SimExecutable}" ]]; then
+    echo "Unable to run tests: ${SimExecutable} was not found/executable."
+    exit 1
+  fi
+
+  for device in 'iPhone' 'iPad'; do
+    iosVersion="5.1"
+    KillSimulator
+    local command=(
+      "${SimExecutable}" "-d${device}" "-s${iosVersion}" "${appPath}"
+    )
+    # Pass along any command line flags
+    if [[ "$#" -gt 0 ]]; then
+      command+=( "--" "${@}" )
+    fi
+    XcodeHeader ${LINENO} "Launching tests for ${device} (iOS ${iosVersion})"
+    "${command[@]}"
+
+    # If the command didn't exit successfully, abort.
+    if [[ $? -ne 0 ]]; then
+      exit $?;
+    fi
+  done
+}
+
+# Time to get to work.
+
+if [[ "${PLATFORM_NAME}" != "iphonesimulator" ]]; then
+  XcodeNote ${LINENO} "Skipping running of unittests for device build."
+else
+  if [[ "$#" -gt 0 ]]; then
+    RunTests "${@}"
+  else
+    RunTests
+  fi
+  KillSimulator
+fi
+
+exit 0