rcutils/test/test_char_array.cpp at jazzy · micro-ROS2/rcutils · GitHub

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// 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 <gtest/gtest.h>

#include <string.h>

#include "./allocator_testing_utils.h"

#include "rcutils/allocator.h"

#include "rcutils/error_handling.h"

#include "rcutils/types/char_array.h"

class ArrayCharTest : public ::testing::Test

{

protected:

void SetUp() override

{

// Reset rcutils error to prevent failure from a previous test case to contaminate

// another one.

rcutils_reset_error();

allocator = rcutils_get_default_allocator();

char_array = rcutils_get_zero_initialized_char_array();

}

rcutils_allocator_t allocator;

rcutils_char_array_t char_array;

};

static rcutils_ret_t example_logger(

rcutils_char_array_t * char_array,

const char * format, ...)

{

rcutils_ret_t status;

va_list args;

va_start(args, format);

status = rcutils_char_array_vsprintf(char_array, format, args);

va_end(args);

return status;

}

TEST_F(ArrayCharTest, default_initialization) {

EXPECT_EQ(RCUTILS_RET_OK, rcutils_char_array_init(&char_array, 0, &allocator));

EXPECT_EQ(0lu, char_array.buffer_capacity);

EXPECT_EQ(RCUTILS_RET_OK, rcutils_char_array_fini(&char_array));

EXPECT_EQ(0lu, char_array.buffer_capacity);

EXPECT_FALSE(char_array.buffer);

}

TEST_F(ArrayCharTest, resize) {

rcutils_ret_t ret = rcutils_char_array_init(&char_array, 5, &allocator);

ASSERT_EQ(RCUTILS_RET_OK, ret);

char_array.buffer_length = static_cast<std::size_t>(

snprintf(char_array.buffer, char_array.buffer_capacity, "1234") + 1);

EXPECT_STREQ("1234", char_array.buffer);

ret = rcutils_char_array_resize(&char_array, 0);

ASSERT_EQ(RCUTILS_RET_INVALID_ARGUMENT, ret);

EXPECT_EQ(5lu, char_array.buffer_capacity);

EXPECT_EQ(5lu, char_array.buffer_length);

rcutils_reset_error();

ret = rcutils_char_array_resize(&char_array, 6);

ASSERT_EQ(RCUTILS_RET_OK, ret);

EXPECT_EQ(6lu, char_array.buffer_capacity);

EXPECT_EQ(5lu, char_array.buffer_length);

ret = rcutils_char_array_resize(&char_array, 11);

ASSERT_EQ(RCUTILS_RET_OK, ret);

EXPECT_EQ(11lu, char_array.buffer_capacity);

EXPECT_EQ(5lu, char_array.buffer_length);

// Resize to same capacity, nothing to be done

ret = rcutils_char_array_resize(&char_array, 11);

ASSERT_EQ(RCUTILS_RET_OK, ret);

EXPECT_EQ(11lu, char_array.buffer_capacity);

EXPECT_EQ(5lu, char_array.buffer_length);

char_array.buffer_length = static_cast<std::size_t>(

snprintf(char_array.buffer, char_array.buffer_capacity, "0987654321") + 1);

EXPECT_STREQ("0987654321", char_array.buffer);

ret = rcutils_char_array_resize(&char_array, 3);

ASSERT_EQ(RCUTILS_RET_OK, ret);

EXPECT_EQ(3lu, char_array.buffer_capacity);

EXPECT_EQ(3lu, char_array.buffer_length);

EXPECT_EQ('0', char_array.buffer[0]);

EXPECT_EQ('9', char_array.buffer[1]);

EXPECT_EQ('8', char_array.buffer[2]);

// the other fields are garbage.

// cleanup only 3 fields

EXPECT_EQ(RCUTILS_RET_OK, rcutils_char_array_fini(&char_array));

allocator = get_failing_allocator();

ret = rcutils_char_array_init(&char_array, 0, &allocator);

ASSERT_EQ(RCUTILS_RET_OK, ret);

// Force a failing allocation on resizing

char_array.owns_buffer = false;

ret = rcutils_char_array_resize(&char_array, 3);

ASSERT_EQ(RCUTILS_RET_BAD_ALLOC, ret);

// Nothing to cleanup, but it should be ok

EXPECT_EQ(RCUTILS_RET_OK, rcutils_char_array_fini(&char_array));

}

TEST_F(ArrayCharTest, vsprintf_fail) {

rcutils_allocator_t failing_allocator = get_failing_allocator();

rcutils_ret_t ret = rcutils_char_array_init(&char_array, 10, &allocator);

ASSERT_EQ(RCUTILS_RET_OK, ret);

char_array.allocator = failing_allocator;

ret = example_logger(&char_array, "Long string for the case %d", 2);

EXPECT_EQ(RCUTILS_RET_BAD_ALLOC, ret);

rcutils_reset_error();

char_array.allocator = allocator;

EXPECT_EQ(RCUTILS_RET_OK, rcutils_char_array_fini(&char_array));

}

TEST_F(ArrayCharTest, strcpy) {

rcutils_allocator_t failing_allocator = get_failing_allocator();

rcutils_ret_t ret = rcutils_char_array_init(&char_array, 8, &allocator);

ASSERT_EQ(RCUTILS_RET_OK, ret);

EXPECT_EQ(RCUTILS_RET_OK, rcutils_char_array_strcpy(&char_array, "1234"));

EXPECT_STREQ("1234", char_array.buffer);

EXPECT_EQ(5lu, char_array.buffer_length);

char_array.allocator = failing_allocator;

EXPECT_EQ(RCUTILS_RET_BAD_ALLOC, rcutils_char_array_strcpy(&char_array, "123456789"));

rcutils_reset_error();

char_array.allocator = allocator;

EXPECT_EQ(RCUTILS_RET_OK, rcutils_char_array_fini(&char_array));

}

TEST_F(ArrayCharTest, strcat) {

rcutils_allocator_t failing_allocator = get_failing_allocator();

rcutils_ret_t ret = rcutils_char_array_init(&char_array, 8, &allocator);

ASSERT_EQ(RCUTILS_RET_OK, ret);

EXPECT_EQ(RCUTILS_RET_OK, rcutils_char_array_strcpy(&char_array, "1234"));

EXPECT_STREQ("1234", char_array.buffer);

EXPECT_EQ(5lu, char_array.buffer_length);

EXPECT_EQ(RCUTILS_RET_OK, rcutils_char_array_strcat(&char_array, "56"));

EXPECT_STREQ("123456", char_array.buffer);

EXPECT_EQ(7lu, char_array.buffer_length);

char_array.allocator = failing_allocator;

EXPECT_EQ(RCUTILS_RET_BAD_ALLOC, rcutils_char_array_strcat(&char_array, "7890"));

rcutils_reset_error();

char_array.allocator = allocator;

EXPECT_EQ(RCUTILS_RET_OK, rcutils_char_array_fini(&char_array));

}

rcutils/test/test_char_array.cpp at jazzy · micro-ROS2/rcutils · GitHub

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