// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.

/*============================================================
**
** Source : test.c
**
** Purpose: Test for GetEnvironmentVariable() function
**
**
**=========================================================*/

#define UNICODE
#include <palsuite.h>

#define BUFFER_SIZE 5000
#define SMALL_BUFFER_SIZE 5

int __cdecl main(int argc, char *argv[]) 
{

    /* Define some buffers needed for the function */
    WCHAR pResultBuffer[BUFFER_SIZE];
    WCHAR pSmallBuffer[SMALL_BUFFER_SIZE];

    /* A place to stash the returned values */
    int ReturnValueForNonExisting, ReturnValueForNull;

    /*
     * Initialize the PAL and return FAILURE if this fails
     */

    if(0 != (PAL_Initialize(argc, argv)))
    {
        return FAIL;
    }

    /* This variable doesn't exist, it should return 0 */
    ReturnValueForNonExisting = 
        GetEnvironmentVariable(convert("NonExistingVariable"),
                               pSmallBuffer,
                               SMALL_BUFFER_SIZE);

    if(ReturnValueForNonExisting != 0) 
    {
        Fail("ERROR: The return should have been 0, but it was %d.  The "
             "function attempted to get an Environment Variable that doesn't "
             "exist and should return 0 as a result.\n",
             ReturnValueForNonExisting);
    }
  
  
    /* Passing a NULL string should return 0 */
    ReturnValueForNull = GetEnvironmentVariable(NULL,
                                                pResultBuffer,
                                                BUFFER_SIZE);
  
    if(ReturnValueForNull != 0) 
    {
        Fail("ERROR: The return should have been 0, but it was %d.  The "
             "function attempted to get a NULL pointer and should return 0 "
             "as a result.\n",ReturnValueForNull);   
    }

    
    PAL_Terminate();
    return PASS;
}