80 lines
2.9 KiB
Plaintext
80 lines
2.9 KiB
Plaintext
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#!/usr/bin/env bash
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# Copyright 2020 The Tint Authors
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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# See https://clang.llvm.org/docs/SourceBasedCodeCoverage.html
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if [ ! -x "$(which llvm-profdata)" ] ; then
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echo "error: llvm-profdata needs to be on \$PATH to use $0"
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exit 1
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fi
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if [ ! -x "$(which llvm-cov)" ] ; then
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echo "error: llvm-cov needs to be on \$PATH to use $0"
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exit 1
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fi
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TARGET_EXE=$1
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if [ ! -x "$TARGET_EXE" ] ; then
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echo "Usage: $0 <executable-path> [optional-args]"
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echo ""
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echo "Generates a lcov.info file at the project root, which can be used by"
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echo "tools such as VSCode's Coverage Gutters extension to visualize code"
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echo "coverage in the editor".
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exit 1
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fi
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SCRIPT_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}")" >/dev/null 2>&1 && pwd )"
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ROOT_DIR="$( cd "${SCRIPT_DIR}/.." >/dev/null 2>&1 && pwd )"
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PROFRAW_FILE="${ROOT_DIR}/tint.profraw"
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PROFDATA_FILE="${ROOT_DIR}/tint.profdata"
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LCOV_FILE="${ROOT_DIR}/lcov.info"
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SUMMARY_FILE="${ROOT_DIR}/coverage.summary"
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# Remove any existing coverage data and intermediate files
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if [ -f "$PROFRAW_FILE" ]; then rm ${PROFRAW_FILE}; fi
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if [ -f "$PROFDATA_FILE" ]; then rm ${PROFDATA_FILE}; fi
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if [ -f "$LCOV_FILE" ]; then rm ${LCOV_FILE}; fi
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if [ -f "$SUMMARY_FILE" ]; then rm ${SUMMARY_FILE}; fi
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# Run the executable to generate the raw coverage data
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# https://clang.llvm.org/docs/SourceBasedCodeCoverage.html#running-the-instrumented-program
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LLVM_PROFILE_FILE="${PROFRAW_FILE}" "$@"
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# Check that coverage information was generated
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if [ ! -f "$PROFRAW_FILE" ]; then
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echo "lcov.info was not generated. Is coverage generation enabled?"
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echo "To enable, run cmake with -DTINT_EMIT_COVERAGE=1".
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exit 1
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fi
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# Fail on any error after running the target executable
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set -e
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# Index the coverage data
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# https://clang.llvm.org/docs/SourceBasedCodeCoverage.html#creating-coverage-reports
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llvm-profdata merge -sparse "${PROFRAW_FILE}" -o "${PROFDATA_FILE}"
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# Export as lcov
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# https://clang.llvm.org/docs/SourceBasedCodeCoverage.html#exporting-coverage-data
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llvm-cov export --instr-profile="${PROFDATA_FILE}" --format=lcov --object=${TARGET_EXE} > "${LCOV_FILE}"
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# Generate summary report
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llvm-cov report --ignore-filename-regex="(.*_test\.cc|third_party/.*)" --instr-profile="${PROFDATA_FILE}" --object=${TARGET_EXE} > "${SUMMARY_FILE}"
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# Clean up intermediate files
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rm ${PROFRAW_FILE} ${PROFDATA_FILE}
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