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[KERNEL32_APITEST] Add tests for GetEnvironmentVariable(A/W)

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Timo Kreuzer
2026-05-08 20:49:38 +00:00
parent 00d78f9310
commit a10eff6e2c
3 changed files with 128 additions and 0 deletions
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modules/rostests/apitests/kernel32/CMakeLists.txt
+1
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@@ -17,6 +17,7 @@ list(APPEND SOURCE
GetCPInfo.c
GetCurrentDirectory.c
GetDriveType.c
GetEnvironmentVariable.c
GetFinalPathNameByHandle.c
GetLocaleInfo.c
GetModuleFileName.c
modules/rostests/apitests/kernel32/GetEnvironmentVariable.c
+125
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@@ -0,0 +1,125 @@
/*
* PROJECT: ReactOS API tests
* LICENSE: MIT (https://spdx.org/licenses/MIT)
* PURPOSE: Tests for GetEnvironmentVariable(A/W)
* COPYRIGHT: Copyright 2026 Timo Kreuzer <[email protected]>
*/
#include "precomp.h"
static void Test_GetEnvironmentVariableA(void)
{
CHAR Buffer[MAX_PATH];
ULONG ActualLength, Length;
/* Get the COMSPEC variable */
memset(Buffer, 0xAB, sizeof(Buffer));
Length = GetEnvironmentVariableA("COMSPEC", Buffer, ARRAYSIZE(Buffer));
Buffer[MAX_PATH - 1] = '\0';
ActualLength = (ULONG)strlen(Buffer);
ok(ActualLength < ARRAYSIZE(Buffer) - 1, "ActualLength == ARRAYSIZE(Buffer) - 1. Not null-terminated?\n");
ok_eq_ulong(Length, ActualLength);
ok_eq_char(Buffer[ActualLength + 1], '\xAB');
/* Get the length only (return value is including NULL char) */
Length = GetEnvironmentVariableA("COMSPEC", NULL, 0);
ok_eq_ulong(Length, ActualLength + 1);
/* Test a buffer size that is too small */
memset(Buffer, 0xAB, sizeof(Buffer));
Length = GetEnvironmentVariableA("COMSPEC", Buffer, 5);
ok_eq_ulong(Length, ActualLength + 1);
ok_eq_char(Buffer[0], '\xAB');
/* Test a buffer size that doesn't fit the terminating NULL char */
memset(Buffer, 0xAB, sizeof(Buffer));
Length = GetEnvironmentVariableA("COMSPEC", Buffer, ActualLength);
ok_eq_ulong(Length, ActualLength + 1);
ok_eq_char(Buffer[0], '\xAB');
/* Test a buffer size that is just large enough */
memset(Buffer, 0xAB, sizeof(Buffer));
Length = GetEnvironmentVariableA("COMSPEC", Buffer, ActualLength + 1);
ok_eq_ulong(Length, ActualLength);
ok_eq_wchar(Buffer[ActualLength], '\0');
ok_eq_wchar(Buffer[ActualLength + 1], '\xAB');
/* Test non-existant variable name */
memset(Buffer, 0xAB, sizeof(Buffer));
Length = GetEnvironmentVariableA("ThisVariableDoesNotExit", Buffer, ARRAYSIZE(Buffer));
ok_eq_ulong(Length, 0);
ok_eq_wchar(Buffer[0], '\xAB');
/* Test NULL variable name */
Length = GetEnvironmentVariableA(NULL, Buffer, ARRAYSIZE(Buffer));
ok_eq_ulong(Length, 0);
/* Test NULL buffer with non-null size */
StartSeh()
Length = GetEnvironmentVariableA("COMSPEC", NULL, ARRAYSIZE(Buffer));
EndSeh(STATUS_ACCESS_VIOLATION);
}
static void Test_GetEnvironmentVariableW(void)
{
WCHAR Buffer[MAX_PATH];
ULONG ActualLength, Length;
/* Get the COMSPEC variable */
memset(Buffer, 0xAB, sizeof(Buffer));
Length = GetEnvironmentVariableW(L"COMSPEC", Buffer, ARRAYSIZE(Buffer));
Buffer[MAX_PATH - 1] = L'\0';
ActualLength = (ULONG)wcslen(Buffer);
ok(ActualLength < ARRAYSIZE(Buffer) - 1, "ActualLength == ARRAYSIZE(Buffer) - 1. Not null-terminated?\n");
ok_eq_ulong(Length, ActualLength);
ok_eq_wchar(Buffer[ActualLength + 1], 0xABAB);
/* Get the length only (return value is including NULL char) */
Length = GetEnvironmentVariableW(L"COMSPEC", NULL, 0);
ok_eq_ulong(Length, ActualLength + 1);
/* Test a buffer size that is too small */
memset(Buffer, 0xAB, sizeof(Buffer));
Length = GetEnvironmentVariableW(L"COMSPEC", Buffer, 2);
ok_eq_ulong(Length, ActualLength + 1);
ok(Buffer[0] == UNICODE_NULL || broken(/* Windows 2003 */ Buffer[0] == 0xABAB), "Buffer[0] = 0x%x\n", Buffer[0]);
ok_eq_wchar(Buffer[1], 0xABAB);
/* Test a buffer size that doesn't fit the terminating NULL char */
memset(Buffer, 0xAB, sizeof(Buffer));
Length = GetEnvironmentVariableW(L"COMSPEC", Buffer, ActualLength);
ok_eq_ulong(Length, ActualLength + 1);
ok(Buffer[0] == UNICODE_NULL || broken(/* Windows 2003 */ Buffer[0] == 0xABAB), "Buffer[0] = 0x%x\n", Buffer[0]);
ok_eq_wchar(Buffer[1], 0xABAB);
/* Test a buffer size that is just large enough */
memset(Buffer, 0xAB, sizeof(Buffer));
Length = GetEnvironmentVariableW(L"COMSPEC", Buffer, ActualLength + 1);
ok_eq_ulong(Length, ActualLength);
ok_eq_wchar(Buffer[ActualLength], L'\0');
ok_eq_wchar(Buffer[ActualLength + 1], 0xABAB);
/* Test non-existant variable name */
memset(Buffer, 0xAB, sizeof(Buffer));
Length = GetEnvironmentVariableW(L"ThisVariableDoesNotExit", Buffer, ARRAYSIZE(Buffer));
ok_eq_ulong(Length, 0);
ok_eq_wchar(Buffer[0], 0xABAB);
/* Test NULL variable name */
StartSeh()
Length = GetEnvironmentVariableW(NULL, Buffer, ARRAYSIZE(Buffer));
EndSeh(STATUS_SUCCESS);
ok_eq_ulong(Length, 0);
/* Test NULL buffer with non-null size */
StartSeh()
Length = GetEnvironmentVariableW(L"COMSPEC", NULL, ARRAYSIZE(Buffer));
EndSeh(STATUS_SUCCESS);
ok((Length == ActualLength + 1) || broken(/* Windows 2003 */ Length == 0), "Length == %lu, ActualLength == %lu\n", Length, ActualLength);
}
START_TEST(GetEnvironmentVariable)
{
Test_GetEnvironmentVariableA();
Test_GetEnvironmentVariableW();
}
modules/rostests/apitests/kernel32/testlist.c
+2
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@@ -16,6 +16,7 @@ extern void func_GetComputerNameEx(void);
extern void func_GetCPInfo(void);
extern void func_GetCurrentDirectory(void);
extern void func_GetDriveType(void);
extern void func_GetEnvironmentVariable(void);
extern void func_GetFinalPathNameByHandle(void);
extern void func_GetLocaleInfo(void);
extern void func_GetModuleFileName(void);
@@ -60,6 +61,7 @@ const struct test winetest_testlist[] =
{ "GetCPInfo", func_GetCPInfo },
{ "GetCurrentDirectory", func_GetCurrentDirectory },
{ "GetDriveType", func_GetDriveType },
{ "GetEnvironmentVariable", func_GetEnvironmentVariable },
{ "GetFinalPathNameByHandle", func_GetFinalPathNameByHandle },
{ "GetLocaleInfo", func_GetLocaleInfo },
{ "GetModuleFileName", func_GetModuleFileName },