blob: c1a2fe7ea6ce550d0789f1c27deff48ec343b16b [file] [log] [blame]
# Copyright 2020 Google LLC
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# https://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""Regression testing rule for fuzz tests."""
load("//fuzzing/private:binary.bzl", "CcFuzzingBinaryInfo")
def _fuzzing_regression_test_impl(ctx):
binary_info = ctx.attr.binary[CcFuzzingBinaryInfo]
script = ctx.actions.declare_file(ctx.label.name)
script_template = """
export FUZZER_OUTPUT_CORPUS_DIR="$TEST_TMPDIR/corpus"
export FUZZER_ARTIFACTS_DIR="$TEST_TMPDIR/artifacts"
export FUZZER_BINARY='{fuzzer_binary}'
export FUZZER_SEED_CORPUS_DIR='{seed_corpus_dir}'
export FUZZER_IS_REGRESSION=1
{engine_launcher_environment}
mkdir -p "$FUZZER_OUTPUT_CORPUS_DIR"
mkdir -p "$FUZZER_ARTIFACTS_DIR"
exec '{engine_launcher}'
"""
script_content = script_template.format(
fuzzer_binary = ctx.executable.binary.short_path,
seed_corpus_dir = binary_info.corpus_dir.short_path,
engine_launcher_environment = "\n".join([
"export %s='%s'" % (var, file.short_path)
for var, file in binary_info.engine_info.launcher_environment.items()
]),
engine_launcher = binary_info.engine_info.launcher.short_path,
)
ctx.actions.write(script, script_content, is_executable = True)
runfiles = ctx.runfiles()
runfiles = runfiles.merge(ctx.attr.binary[DefaultInfo].default_runfiles)
runfiles = runfiles.merge(binary_info.engine_info.launcher_runfiles)
return [DefaultInfo(executable = script, runfiles = runfiles)]
fuzzing_regression_test = rule(
implementation = _fuzzing_regression_test_impl,
doc = """
Executes a fuzz test on its seed corpus.
""",
attrs = {
"binary": attr.label(
executable = True,
doc = "The instrumented executable of the fuzz test to run.",
providers = [CcFuzzingBinaryInfo],
cfg = "target",
mandatory = True,
),
},
test = True,
)