update_engine/gen_coverage_html

#!/bin/bash

# Copyright (c) 2012 The Chromium OS Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.

# Builds, runs unit tests, then collects and processes coverage data for update
# engine binaries. In the case where lcov/genhtml are missing, it will just
# build and run the unit tests.

DO_COVERAGE=$(which lcov genhtml > /dev/null 2>&1 && echo 1)

set -ex

./build debug=1
if [[ $DO_COVERAGE ]]; then
  lcov --directory . --zerocounters
fi
./run_unittests
if [[ $DO_COVERAGE ]]; then
  lcov --directory . --capture --output-file app.info

  # We try to use genhtml with --no-function-coverage, if it is supported.  The
  # problem w/ function coverage is that every template instantiation of a
  # method counts as a different method, so if we instantiate a method twice,
  # once for testing and once for prod, the method is tested, but it shows only
  # 50% function coverage b/c it thinks we didn't test the prod version.
  GENHTML_NO_FUNC_COV=$(genhtml --help | grep -q function-coverage &&
                        echo --no-function-coverage)
  genhtml $GENHTML_NO_FUNC_CONV --output-directory html app.info
  ./local_coverage_rate
fi