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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/buffer.h"

#include <gtest/gtest.h>
#include "util_allocator.h"

class Buffer : public ::testing::Test {
protected:
    void TearDown() override {
        EXPECT_TRUE(testingAllocator.verify());
    }

    CxTestingAllocator testingAllocator;
};

TEST_F(Buffer, WrapSpace) {
    CxBuffer buf;
    void *space = cxMalloc(&testingAllocator, 16);
    cxBufferInit(&buf, space, 16, &testingAllocator, CX_BUFFER_DEFAULT);
    EXPECT_EQ(buf.space, space);
    EXPECT_EQ(buf.flags & CX_BUFFER_AUTO_EXTEND, 0);
    EXPECT_EQ(buf.flags & CX_BUFFER_FREE_CONTENTS, 0);
    EXPECT_EQ(buf.pos, 0);
    EXPECT_EQ(buf.size, 0);
    EXPECT_EQ(buf.capacity, 16);
    EXPECT_EQ(buf.allocator, &testingAllocator);
    cxBufferDestroy(&buf);
    EXPECT_FALSE(testingAllocator.verify());
    cxFree(&testingAllocator, space);
    EXPECT_TRUE(testingAllocator.verify());
}

TEST_F(Buffer, WrapSpaceAutoFree) {
    CxBuffer buf;
    void *space = cxMalloc(&testingAllocator, 16);
    cxBufferInit(&buf, space, 16, &testingAllocator, CX_BUFFER_FREE_CONTENTS);
    EXPECT_EQ(buf.space, space);
    EXPECT_EQ(buf.flags & CX_BUFFER_AUTO_EXTEND, 0);
    EXPECT_EQ(buf.flags & CX_BUFFER_FREE_CONTENTS, CX_BUFFER_FREE_CONTENTS);
    EXPECT_EQ(buf.pos, 0);
    EXPECT_EQ(buf.size, 0);
    EXPECT_EQ(buf.capacity, 16);
    EXPECT_EQ(buf.allocator, &testingAllocator);
    EXPECT_FALSE(testingAllocator.verify());
    cxBufferDestroy(&buf);
    EXPECT_TRUE(testingAllocator.verify());
}