/*
 * Copyright (c) 2017, Intel Corporation
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included
 * in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 * OTHER DEALINGS IN THE SOFTWARE.
 */

#include "runtime/helpers/hash.h"
#include "runtime/helpers/string.h"
#include "gtest/gtest.h"

#if defined(__linux__)

TEST(StringHelpers, strncpy) {
    char dst[1024] = "";
    char src[1024] = "HelloWorld";

    //preconditions
    ASSERT_EQ(sizeof(dst), sizeof(src));
    //String must be smaller than array capacity
    ASSERT_LT(strlen(src), sizeof(src));

    auto ret = strncpy_s(nullptr, 1024, src, 1024);
    EXPECT_EQ(ret, -EINVAL);

    ret = strncpy_s(dst, 1024, nullptr, 1024);
    EXPECT_EQ(ret, -EINVAL);

    ret = strncpy_s(dst, 512, src, 1024);
    EXPECT_EQ(ret, -ERANGE);

    memset(dst, 0, sizeof(dst));
    ret = strncpy_s(dst, 1024, src, strlen(src) / 2);
    EXPECT_EQ(ret, 0);
    EXPECT_EQ(0, memcmp(dst, src, strlen(src) / 2));
    for (size_t i = strlen(src) / 2; i < sizeof(dst); i++)
        EXPECT_EQ(0, dst[i]);

    memset(dst, 0, sizeof(dst));
    ret = strncpy_s(dst, strlen(src) / 2, src, strlen(src) / 2);
    EXPECT_EQ(ret, 0);
    EXPECT_EQ(0, memcmp(dst, src, strlen(src) / 2));
    for (size_t i = strlen(src) / 2; i < sizeof(dst); i++)
        EXPECT_EQ(0, dst[i]);

    strncpy_s(dst, 1024, src, 1024);
    EXPECT_EQ(0, memcmp(dst, src, strlen(src)));
    for (size_t i = strlen(src); i < sizeof(dst); i++)
        EXPECT_EQ(0, dst[i]);
}

TEST(StringHelpers, memmove) {
    char dst[1024] = "";
    char src[1024] = "HelloWorld";

    ASSERT_EQ(sizeof(dst), sizeof(src));

    auto ret = memmove_s(nullptr, sizeof(dst), src, sizeof(src));
    EXPECT_EQ(ret, -EINVAL);

    ret = memmove_s(dst, sizeof(dst), nullptr, sizeof(src));
    EXPECT_EQ(ret, -EINVAL);

    ret = memmove_s(dst, sizeof(src) / 2, src, sizeof(src));
    EXPECT_EQ(ret, -ERANGE);

    memset(dst, 0, sizeof(dst));
    ret = memmove_s(dst, sizeof(dst), src, sizeof(src));
    EXPECT_EQ(ret, 0);
    EXPECT_EQ(0, memcmp(dst, src, sizeof(dst)));
}

TEST(StringHelpers, strcpy) {
    char dst[1024] = "";
    char src[1024] = "HelloWorld";

    ASSERT_EQ(sizeof(dst), sizeof(src));

    auto ret = strcpy_s(nullptr, sizeof(dst), src);
    EXPECT_EQ(ret, -EINVAL);

    ret = strcpy_s(dst, sizeof(dst), nullptr);
    EXPECT_EQ(ret, -EINVAL);

    ret = strcpy_s(dst, strlen(src) / 2, src);
    EXPECT_EQ(ret, -ERANGE);

    memset(dst, 0, sizeof(dst));
    ret = strcpy_s(dst, sizeof(dst), src);
    EXPECT_EQ(ret, 0);
    EXPECT_EQ(0, memcmp(dst, src, strlen(src)));
    for (size_t i = strlen(src); i < sizeof(dst); i++)
        EXPECT_EQ(0, dst[i]);
}

TEST(StringHelpers, strnlen) {
    char src[1024] = "HelloWorld";

    auto ret = strnlen_s(nullptr, sizeof(src));
    EXPECT_EQ(ret, 0u);

    ret = strnlen_s(src, 0);
    EXPECT_EQ(ret, 0u);

    ret = strnlen_s(src, sizeof(src));
    EXPECT_EQ(ret, strlen(src));
}

TEST(StringHelpers, memcpy) {
    char dst[1024] = "";
    char src[1024] = "HelloWorld";

    //preconditions
    ASSERT_EQ(sizeof(dst), sizeof(src));
    //String must be smaller than array capacity
    ASSERT_LT(strlen(src), sizeof(src));

    auto ret = memcpy_s(nullptr, sizeof(dst), src, sizeof(src));
    EXPECT_EQ(ret, -EINVAL);

    ret = memcpy_s(dst, sizeof(dst), nullptr, sizeof(src));
    EXPECT_EQ(ret, -EINVAL);

    ret = memcpy_s(dst, sizeof(dst) / 2, src, sizeof(src));
    EXPECT_EQ(ret, -ERANGE);

    memset(dst, 0, sizeof(dst));
    ret = memcpy_s(dst, sizeof(dst), src, strlen(src) / 2);
    EXPECT_EQ(ret, 0);
    EXPECT_EQ(0, memcmp(dst, src, strlen(src) / 2));
    for (size_t i = strlen(src) / 2; i < sizeof(dst); i++)
        EXPECT_EQ(0, dst[i]);
}

#endif