xserver/test/misc.c

/**
 * Copyright © 2011 Red Hat, Inc.
 *
 *  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 (including the next
 *  paragraph) 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.
 */

/* Test relies on assert() */
#undef NDEBUG

#include <dix-config.h>

#include <assert.h>
#include <stdint.h>

#include "dix/input_priv.h"
#include "dix/screenint_priv.h"
#include "include/misc.h"
#include "os/fmt.h"

#include "scrnintstr.h"
#include "dix.h"
#include "dixstruct.h"
#include "tests-common.h"

static void
dix_version_compare(void)
{
    int rc;

    rc = version_compare(0, 0, 1, 0);
    assert(rc < 0);
    rc = version_compare(1, 0, 0, 0);
    assert(rc > 0);
    rc = version_compare(0, 0, 0, 0);
    assert(rc == 0);
    rc = version_compare(1, 0, 1, 0);
    assert(rc == 0);
    rc = version_compare(1, 0, 0, 9);
    assert(rc > 0);
    rc = version_compare(0, 9, 1, 0);
    assert(rc < 0);
    rc = version_compare(1, 0, 1, 9);
    assert(rc < 0);
    rc = version_compare(1, 9, 1, 0);
    assert(rc > 0);
    rc = version_compare(2, 0, 1, 9);
    assert(rc > 0);
    rc = version_compare(1, 9, 2, 0);
    assert(rc < 0);
}

static inline void set_screen(unsigned int idx, short x, short y, short w, short h)
{
    ScreenPtr pScreen = dixGetScreenPtr(idx);
    pScreen->x = x;
    pScreen->y = y;
    pScreen->width = w;
    pScreen->height = h;
}

static void
dix_update_desktop_dimensions(void)
{
    int i;
    ScreenRec screens[MAXSCREENS];

    for (i = 0; i < MAXSCREENS; i++)
        screenInfo.screens[i] = &screens[i];

    short x = 0;
    short y = 0;
    short w = 10;
    short h = 5;
    short w2 = 35;
    short h2 = 25;

#define assert_dimensions(_x, _y, _w, _h) \
    update_desktop_dimensions();          \
    assert(screenInfo.x == (_x));         \
    assert(screenInfo.y == (_y));         \
    assert(screenInfo.width == (_w));     \
    assert(screenInfo.height == (_h));

    /* single screen */
    screenInfo.numScreens = 1;
    set_screen(0, x, y, w, h);
    assert_dimensions(x, y, w, h);

    /* dualhead rightof */
    screenInfo.numScreens = 2;
    set_screen(1, w, 0, w2, h2);
    assert_dimensions(x, y, w + w2, h2);

    /* dualhead belowof */
    screenInfo.numScreens = 2;
    set_screen(1, 0, h, w2, h2);
    assert_dimensions(x, y, w2, h + h2);

    /* triplehead L shape */
    screenInfo.numScreens = 3;
    set_screen(1, 0, h, w2, h2);
    set_screen(2, w2, h2, w, h);
    assert_dimensions(x, y, w + w2, h + h2);

    /* quadhead 2x2 */
    screenInfo.numScreens = 4;
    set_screen(1, 0, h, w, h);
    set_screen(2, w, h, w, h2);
    set_screen(3, w, 0, w2, h);
    assert_dimensions(x, y, w + w2, h + h2);

    /* quadhead horiz line */
    screenInfo.numScreens = 4;
    set_screen(1, w, 0, w, h);
    set_screen(2, 2 * w, 0, w, h);
    set_screen(3, 3 * w, 0, w, h);
    assert_dimensions(x, y, 4 * w, h);

    /* quadhead vert line */
    screenInfo.numScreens = 4;
    set_screen(1, 0, h, w, h);
    set_screen(2, 0, 2 * h, w, h);
    set_screen(3, 0, 3 * h, w, h);
    assert_dimensions(x, y, w, 4 * h);

    /* x overlap */
    screenInfo.numScreens = 2;
    set_screen(0, 0, 0, w2, h2);
    set_screen(1, w, 0, w2, h2);
    assert_dimensions(x, y, w2 + w, h2);

    /* y overlap */
    screenInfo.numScreens = 2;
    set_screen(0, 0, 0, w2, h2);
    set_screen(1, 0, h, w2, h2);
    assert_dimensions(x, y, w2, h2 + h);

    /* negative origin */
    screenInfo.numScreens = 1;
    set_screen(0, -w2, -h2, w, h);
    assert_dimensions(-w2, -h2, w, h);

    /* dualhead negative origin, overlap */
    screenInfo.numScreens = 2;
    set_screen(0, -w2, -h2, w2, h2);
    set_screen(1, -w, -h, w, h);
    assert_dimensions(-w2, -h2, w2, h2);
}

static int
dix_request_fixed_size_overflow(ClientRec *client)
{
    xReq req = { 0 };

    client->req_len = req.length = 1;
    REQUEST_FIXED_SIZE(req, 4096);
    return Success;
}

static int
dix_request_fixed_size_match(ClientRec *client)
{
    xReq req = { 0 };

    client->req_len = req.length = 9;
    REQUEST_FIXED_SIZE(req, 30);
    return Success;
}

static void
dix_request_size_checks(void)
{
    ClientRec client = { 0 };
    int rc;

    rc = dix_request_fixed_size_overflow(&client);
    assert(rc == BadLength);

    rc = dix_request_fixed_size_match(&client);
    assert(rc == Success);
}

static void
bswap_test(void)
{
    const uint16_t test_16 = 0xaabb;
    const uint16_t expect_16 = 0xbbaa;
    const uint32_t test_32 = 0xaabbccdd;
    const uint32_t expect_32 = 0xddccbbaa;
    const uint64_t test_64 = 0x11223344aabbccddull;
    const uint64_t expect_64 = 0xddccbbaa44332211ull;
    uint16_t result_16;
    uint32_t result_32;
    uint64_t result_64;

    assert(bswap_16(test_16) == expect_16);
    assert(bswap_32(test_32) == expect_32);
    assert(bswap_64(test_64) == expect_64);

    result_16 = test_16;
    swaps(&result_16);
    assert(result_16 == expect_16);

    result_32 = test_32;
    swapl(&result_32);
    assert(result_32 == expect_32);

    result_64 = test_64;
    swapll(&result_64);
    assert(result_64 == expect_64);
}

const testfunc_t*
misc_test(void)
{
    static const testfunc_t testfuncs[] = {
        dix_version_compare,
        dix_update_desktop_dimensions,
        dix_request_size_checks,
        bswap_test,
        NULL,
    };
    return testfuncs;
}