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carbon-lang/explorer/fuzzing/fuzzer_util_test.cpp
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Josh Soref 066b103881 Spelling (#1580)
This PR corrects misspellings identified by the [check-spelling action](https://github.com/marketplace/actions/check-spelling).

The misspellings have been reported at https://github.com/jsoref/carbon-lang/commit/38a1c1640151899fd6da0442a92557f9543b6280#commitcomment-79197316

The action reports that the changes in this PR would make it happy: https://github.com/jsoref/carbon-lang/commit/173c8f9083a68aa61f7cfe94f720f1e5dc7f1ea3

Note: this PR does not include the action. If you're interested in running a spell check on every PR and push, that can be offered separately.

Signed-off-by: Josh Soref <2119212+jsoref@users.noreply.github.com>
2022-07-22 16:14:21 -07:00

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// Part of the Carbon Language project, under the Apache License v2.0 with LLVM
// Exceptions. See /LICENSE for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
#include "explorer/fuzzing/fuzzer_util.h"
#include <gmock/gmock.h>
#include <gtest/gtest.h>
#include <fstream>
#include "llvm/ADT/StringRef.h"
#include "llvm/Support/raw_ostream.h"
namespace Carbon::Testing {
namespace {
static std::vector<llvm::StringRef>* carbon_files = nullptr;
// A workaround for https://github.com/carbon-language/carbon-lang/issues/1208.
TEST(FuzzerUtilTest, RunFuzzerOnCorpus) {
int parsed_file_count = 0;
for (const llvm::StringRef f : *carbon_files) {
llvm::outs() << "Processing " << f << "\n";
std::ifstream file(f.str(), std::ios::in);
ASSERT_TRUE(file.is_open());
std::stringstream contents;
contents << file.rdbuf();
// Parsing errors are ignored to make the fuzzer inputs less brittle as the
// explorer code changes. This also matches standard fuzzer behavior.
if (auto carbon_proto = ParseCarbonTextProto(contents.str());
carbon_proto.ok()) {
ParseAndExecute(carbon_proto->compilation_unit());
++parsed_file_count;
}
}
EXPECT_GT(parsed_file_count, 0);
}
TEST(FuzzerUtilTest, GetRunfilesFile) {
EXPECT_THAT(*Internal::GetRunfilesFile("carbon/explorer/data/prelude.carbon"),
testing::EndsWith("/prelude.carbon"));
EXPECT_THAT(Internal::GetRunfilesFile("nonexistent-file").error().message(),
testing::EndsWith("doesn't exist"));
}
TEST(FuzzerUtilTest, ParseCarbonTextProtoWithUnknownField) {
const ErrorOr<Fuzzing::Carbon> carbon_proto =
ParseCarbonTextProto(R"(
compilation_unit {
garbage: "value"
declarations {
choice {
name: "Ch"
}
}
})",
/*allow_unknown=*/true);
ASSERT_TRUE(carbon_proto.ok());
// No EqualsProto in gmock - https://github.com/google/googletest/issues/1761.
EXPECT_EQ(carbon_proto->compilation_unit().declarations(0).choice().name(),
"Ch");
}
} // namespace
} // namespace Carbon::Testing
auto main(int argc, char** argv) -> int {
::testing::InitGoogleTest(&argc, argv);
Carbon::Testing::carbon_files =
new std::vector<llvm::StringRef>(&argv[1], &argv[argc]);
return RUN_ALL_TESTS();
}