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#!/bin/sh
# Copyright 2016 Google Inc.
#
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
if [ -z "$1" ]; then
cat <<-EOM
Usage:
$0 SKIA_EXECUTABLE [ARGUMENTS_FOR_EXECUTABLE...]
Run something like this:
$0 dm --src tests
or
$0 dm --src gm skp
EOM
exit 1
fi
set -x
set -e
cd "$(dirname "$0")/.."
EXECUTABLE="$1"
shift
DIR="$(mktemp -d "${TMPDIR:-/tmp}/skia_coverage_XXXXXXXXXX")"
BUILD=out/coverage
# Build $EXECUTABLE
bin/sync
bin/fetch-gn
#TODO: make this work with Clang.
ARGS='cc="gcc" cxx="g++" extra_cflags="--coverage" extra_ldflags="--coverage"'
gn gen --args="$ARGS" "$BUILD"
ninja -C "$BUILD" "$EXECUTABLE"
GCOV="$(realpath tools/gcov_shim)"
# Generate a zero-baseline so files not covered by $EXECUTABLE $@ will
# still show up in the report. This reads the .gcno files that are
# created at compile time.
lcov -q --gcov-tool="$GCOV" -c -b "$BUILD" -d "$BUILD" -o "$DIR"/baseline -i
# Running the binary generates the real coverage information, the .gcda files.
"$BUILD"/"$EXECUTABLE" "$@"
lcov -q --gcov-tool="$GCOV" -c -b "$BUILD" -d "$BUILD" -o "$DIR"/coverage
lcov -q -a "$DIR"/baseline -a "$DIR"/coverage -o "$DIR"/merged
genhtml -q "$DIR"/merged --legend -o "$DIR"/coverage_report --ignore-errors source
xdg-open "$DIR"/coverage_report/index.html
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