/*
* Copyright (c) Meta Platforms, Inc. and affiliates.
*
* 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
*
* http://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.
*/
#include <folly/Exception.h>
#include <cstdio>
#include <memory>
#include <folly/portability/GTest.h>
#include <folly/testing/TestUtil.h>
namespace folly {
namespace test {
#define EXPECT_SYSTEM_ERROR(statement, err, msg) \
try { \
statement; \
ADD_FAILURE() << "Didn't throw"; \
} catch (const std::system_error& e) { \
std::system_error expected(err, errorCategoryForErrnoDomain(), msg); \
EXPECT_STREQ(expected.what(), e.what()); \
} catch (...) { \
ADD_FAILURE() << "Threw a different type"; \
}
TEST(ExceptionTest, Simple) {
// Make sure errno isn't used when we don't want it to, set it to something
// else than what we set when we call Explicit functions
errno = ERANGE;
EXPECT_SYSTEM_ERROR(throwSystemErrorExplicit(EIO, "hello"), EIO, "hello");
errno = ERANGE;
EXPECT_SYSTEM_ERROR(
throwSystemErrorExplicit(EIO, "hello", " world"), EIO, "hello world");
errno = ERANGE;
EXPECT_SYSTEM_ERROR(
throwSystemError("hello", " world"), ERANGE, "hello world");
EXPECT_NO_THROW(checkPosixError(0, "hello", " world"));
errno = ERANGE;
EXPECT_SYSTEM_ERROR(
checkPosixError(EIO, "hello", " world"), EIO, "hello world");
EXPECT_NO_THROW(checkKernelError(0, "hello", " world"));
EXPECT_NO_THROW(checkKernelError(EIO, "hello", " world"));
errno = ERANGE;
EXPECT_SYSTEM_ERROR(
checkKernelError(-EIO, "hello", " world"), EIO, "hello world");
EXPECT_NO_THROW(checkUnixError(0, "hello", " world"));
EXPECT_NO_THROW(checkUnixError(1, "hello", " world"));
errno = ERANGE;
EXPECT_SYSTEM_ERROR(
checkUnixError(-1, "hello", " world"), ERANGE, "hello world");
EXPECT_NO_THROW(checkUnixErrorExplicit(0, EIO, "hello", " world"));
EXPECT_NO_THROW(checkUnixErrorExplicit(1, EIO, "hello", " world"));
errno = ERANGE;
EXPECT_SYSTEM_ERROR(
checkUnixErrorExplicit(-1, EIO, "hello", " world"), EIO, "hello world");
TemporaryDirectory tmpdir;
auto exnpath = tmpdir.path() / "ExceptionTest";
auto fp = fopen(exnpath.string().c_str(), "w+b");
ASSERT_TRUE(fp != nullptr);
SCOPE_EXIT {
fclose(fp);
};
EXPECT_NO_THROW(checkFopenError(fp, "hello", " world"));
errno = ERANGE;
EXPECT_SYSTEM_ERROR(
checkFopenError(nullptr, "hello", " world"), ERANGE, "hello world");
EXPECT_NO_THROW(checkFopenErrorExplicit(fp, EIO, "hello", " world"));
errno = ERANGE;
EXPECT_SYSTEM_ERROR(
checkFopenErrorExplicit(nullptr, EIO, "hello", " world"),
EIO,
"hello world");
}
TEST(ExceptionTest, makeSystemError) {
errno = ENOENT;
auto ex = makeSystemErrorExplicit(EDEADLK, "stuck");
EXPECT_EQ(EDEADLK, ex.code().value());
EXPECT_EQ(errorCategoryForErrnoDomain(), ex.code().category());
EXPECT_TRUE(StringPiece{ex.what()}.contains("stuck"))
<< "what() string missing input message: " << ex.what();
ex = makeSystemErrorExplicit(EDOM, 300, " is bigger than max=", 255);
EXPECT_EQ(EDOM, ex.code().value());
EXPECT_EQ(errorCategoryForErrnoDomain(), ex.code().category());
EXPECT_TRUE(StringPiece{ex.what()}.contains("300 is bigger than max=255"))
<< "what() string missing input message: " << ex.what();
errno = EINVAL;
ex = makeSystemError("bad argument ", 1234, ": bogus");
EXPECT_EQ(EINVAL, ex.code().value());
EXPECT_EQ(errorCategoryForErrnoDomain(), ex.code().category());
EXPECT_TRUE(StringPiece{ex.what()}.contains("bad argument 1234: bogus"))
<< "what() string missing input message: " << ex.what();
errno = 0;
ex = makeSystemError("unexpected success");
EXPECT_EQ(0, ex.code().value());
EXPECT_EQ(errorCategoryForErrnoDomain(), ex.code().category());
EXPECT_TRUE(StringPiece{ex.what()}.contains("unexpected success"))
<< "what() string missing input message: " << ex.what();
}
} // namespace test
} // namespace folly