reactos/modules/rostests/apitests/shell32/ExtractIconEx.cpp

/*
 * PROJECT:     ReactOS API Tests
 * LICENSE:     GPL-2.0-or-later (https://spdx.org/licenses/GPL-2.0-or-later)
 * PURPOSE:     Tests for ExtractIconEx routine
 * COPYRIGHT:   Copyright 2019 George Bișoc (george.bisoc@reactos.org)
 *              Copyright 2023 Doug Lyons (douglyons@douglyons.com)
 */

#include "shelltest.h"
#include <stdio.h>

typedef struct
{
    PCWSTR pszFilePath;
    UINT nIcons;
} EXTRACTICONTESTS;

BOOL FileExists(LPCSTR FileName)
{
    FILE *fp = NULL;
    bool exists = FALSE;

    fp = fopen(FileName, "r");
    if (fp != NULL)
    {
        exists = TRUE;
        fclose(fp);
    }
    return exists;
}

BOOL ResourceToFile(INT i, LPCSTR FileName)
{
    FILE *fout;
    HGLOBAL hData;
    HRSRC hRes;
    LPVOID lpResLock;
    UINT iSize;

    if (FileExists(FileName))
    {
        skip("'%s' already exists. Exiting now\n", FileName);
        return FALSE;
    }

    hRes = FindResourceW(NULL, MAKEINTRESOURCEW(i), MAKEINTRESOURCEW(RT_RCDATA));
    if (hRes == NULL)
    {
        skip("Could not locate resource (%d). Exiting now\n", i);
        return FALSE;
    }

    iSize = SizeofResource(NULL, hRes);

    hData = LoadResource(NULL, hRes);
    if (hData == NULL)
    {
        skip("Could not load resource (%d). Exiting now\n", i);
        return FALSE;
    }

    // Lock the resource into global memory.
    lpResLock = LockResource(hData);
    if (lpResLock == NULL)
    {
        skip("Could not lock resource (%d). Exiting now\n", i);
        return FALSE;
    }

    fout = fopen(FileName, "wb");
    fwrite(lpResLock, iSize, 1, fout);
    fclose(fout);
    return TRUE;
}

EXTRACTICONTESTS IconTests[] =
{
    /* Executable file with icon */
    {L"%SystemRoot%\\System32\\cmd.exe", 1},

    /* Executable file without icon */
    {L"%SystemRoot%\\System32\\autochk.exe", 0},

    /* Non-existing files */
    {L"%SystemRoot%\\non-existent-file.sdf", 0},

    /* Multiple icons in the same EXE file (18 icons) */
    {L"%SystemRoot%\\explorer.exe", 18},

    /* Multiple icons in the same ICO file (6 icons)
     * Per MS: If the file is an .ico file, the return value is 1. */
    {L"sysicon.ico", 1},

    /* ICO file with both normal and PNG icons */
    {L"ROS.ico", 0}
};

START_TEST(ExtractIconEx)
{
    UINT i, nReturnedIcons, nExtractedIcons;
    CHAR FileName[2][13] = { "ROS.ico", "sysicon.ico" };

    if (!ResourceToFile(2, FileName[0]))
        return;
    if (!ResourceToFile(3, FileName[1]))
        return;

    /* Check count of icons returned */
    for (i = 0; i < _countof(IconTests); ++i)
    {
        nReturnedIcons = ExtractIconExW(IconTests[i].pszFilePath, -1, NULL, NULL, 0);
        ok(nReturnedIcons == IconTests[i].nIcons, "ExtractIconExW(%u): Expects %u icons, got %u\n", i, IconTests[i].nIcons, nReturnedIcons);
    }

    /* Check if the 0th icon can be extracted successfully */
    for (i = 0; i < _countof(IconTests); ++i)
    {
        nExtractedIcons = ExtractIconExW(IconTests[i].pszFilePath, 0, NULL, NULL, 1);
        ok(nExtractedIcons == IconTests[i].nIcons, "ExtractIconExW(%u): Expects %u icons, got %u\n", i, IconTests[i].nIcons, nExtractedIcons);
    }

    DeleteFileA(FileName[0]);
    DeleteFileA(FileName[1]);
}