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// Copyright 2021 DeepMind Technologies Limited
//
// 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.
// Tests for engine/engine_util_errmem.c.
#include <cstring>
#include <string>
#include <gmock/gmock.h>
#include <gtest/gtest.h>
#include "src/engine/engine_util_errmem.h"
namespace mujoco {
namespace {
constexpr int kBufferSize = 1000;
char* ErrorMessageBuffer() {
static char error_message[kBufferSize] = "";
return error_message;
}
char* WarningMessageBuffer() {
static char warning_message[kBufferSize] = "";
return warning_message;
}
void MjErrorHandler(const char* msg) {
if (strnlen(msg, kBufferSize) == kBufferSize) {
FAIL() << "mju_user_error message exceeds maximum length of "
<< kBufferSize;
}
strncpy(ErrorMessageBuffer(), msg, kBufferSize);
}
void MjWarningHandler(const char* msg) {
if (strnlen(msg, kBufferSize) == kBufferSize) {
FAIL() << "mju_user_warning message exceeds maximum length of "
<< kBufferSize;
}
strncpy(WarningMessageBuffer(), msg, kBufferSize);
}
void ClearErrorMessage() { ErrorMessageBuffer()[0] = '\0'; }
void ClearWarningMessage() { WarningMessageBuffer()[0] = '\0'; }
class MujocoErrorAndWarningTest : public ::testing::Test {
public:
MujocoErrorAndWarningTest() {
mju_user_error = MjErrorHandler;
mju_user_warning = MjWarningHandler;
}
~MujocoErrorAndWarningTest() {
mju_user_error = nullptr;
mju_user_warning = nullptr;
}
};
TEST_F(MujocoErrorAndWarningTest, MjuErrorI) {
std::string format_string = "%010d";
while (format_string.length() < 2 * kBufferSize) {
format_string += 'x';
}
std::string expected_message = "0123456789";
while (expected_message.length() < kBufferSize - 1) {
expected_message += 'x';
}
ClearErrorMessage();
mju_error_i(format_string.c_str(), 123456789);
EXPECT_EQ(std::string(ErrorMessageBuffer()), expected_message);
}
TEST_F(MujocoErrorAndWarningTest, MjuWarningI) {
std::string format_string = "%010d";
while (format_string.length() < 2 * kBufferSize) {
format_string += 'x';
}
std::string expected_message = "0123456789";
while (expected_message.length() < kBufferSize - 1) {
expected_message += 'x';
}
ClearWarningMessage();
mju_warning_i(format_string.c_str(), 123456789);
EXPECT_EQ(std::string(WarningMessageBuffer()), expected_message);
}
TEST_F(MujocoErrorAndWarningTest, MjuErrorS) {
std::string format_string = "% 9s";
while (format_string.length() < 2 * kBufferSize) {
format_string += 'z';
}
std::string expected_message = " foobar";
while (expected_message.length() < kBufferSize - 1) {
expected_message += 'z';
}
ClearErrorMessage();
mju_error_s(format_string.c_str(), "foobar");
EXPECT_EQ(std::string(ErrorMessageBuffer()), expected_message);
}
TEST_F(MujocoErrorAndWarningTest, MjuWarningS) {
std::string format_string = "% 9s";
while (format_string.length() < 2 * kBufferSize) {
format_string += 'z';
}
std::string expected_message = " foobar";
while (expected_message.length() < kBufferSize - 1) {
expected_message += 'z';
}
ClearWarningMessage();
mju_warning_s(format_string.c_str(), "foobar");
EXPECT_EQ(std::string(WarningMessageBuffer()), expected_message);
}
} // namespace
} // namespace mujoco
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