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/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright 2021 Mike Becker, Olaf Wintermann All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 *   1. Redistributions of source code must retain the above copyright
 *      notice, this list of conditions and the following disclaimer.
 *
 *   2. Redistributions in binary form must reproduce the above copyright
 *      notice, this list of conditions and the following disclaimer in the
 *      documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

#include "cx/hash_key.h"
#include "cx/string.h"

#include <gtest/gtest.h>

TEST(cx_hash_key, functions) {
    auto str = "my key";
    auto len = strlen(str);

    auto str_key = cx_hash_key_str(str);
    auto bytes_key = cx_hash_key_bytes(
            reinterpret_cast<unsigned char const *>(str), len);
    auto obj_key = cx_hash_key(
            reinterpret_cast<void const *>(str), len);
    auto cxstr_key = cx_hash_key_cxstr(cx_str(str));

    EXPECT_EQ(str_key.hash, bytes_key.hash);
    EXPECT_EQ(obj_key.hash, bytes_key.hash);
    EXPECT_EQ(cxstr_key.hash, bytes_key.hash);
    EXPECT_EQ(str_key.len, len);
    EXPECT_EQ(cxstr_key.len, len);
    EXPECT_EQ(bytes_key.len, len);
    EXPECT_EQ(bytes_key.len, len);
    EXPECT_EQ(str_key.data, str);
}

TEST(cx_hash_key, empty_string) {
    auto str = "";

    auto str_key = cx_hash_key_str(str);
    auto bytes_key = cx_hash_key_bytes(
            reinterpret_cast<unsigned char const *>(str), 0);
    auto obj_key = cx_hash_key(
            reinterpret_cast<void const *>(str), 0);

    EXPECT_EQ(bytes_key.hash, 4152238450u);
    EXPECT_EQ(str_key.hash, 4152238450u);
    EXPECT_EQ(obj_key.hash, 4152238450u);
    EXPECT_EQ(str_key.len, 0);
    EXPECT_EQ(bytes_key.len, 0);
    EXPECT_EQ(bytes_key.len, 0);
    EXPECT_EQ(str_key.data, str);
}

TEST(cx_hash_key, null_ptr) {
    auto str_key = cx_hash_key_str(nullptr);
    auto bytes_key = cx_hash_key_bytes(nullptr, 0);
    auto obj_key = cx_hash_key(nullptr, 0);

    EXPECT_EQ(bytes_key.hash, 1574210520u);
    EXPECT_EQ(str_key.hash, 1574210520u);
    EXPECT_EQ(obj_key.hash, 1574210520u);
    EXPECT_EQ(str_key.len, 0);
    EXPECT_EQ(bytes_key.len, 0);
    EXPECT_EQ(bytes_key.len, 0);
    EXPECT_EQ(str_key.data, nullptr);
}