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diff --git a/src/pal/tests/palsuite/file_io/GetDiskFreeSpaceW/test1/GetDiskFreeSpaceW.cpp b/src/pal/tests/palsuite/file_io/GetDiskFreeSpaceW/test1/GetDiskFreeSpaceW.cpp
new file mode 100644
index 0000000..c1445f6
--- /dev/null
+++ b/src/pal/tests/palsuite/file_io/GetDiskFreeSpaceW/test1/GetDiskFreeSpaceW.cpp
@@ -0,0 +1,94 @@
+// 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: GetDiskFreeSpaceW.c (test 1)
+**
+** Purpose: Tests the PAL implementation of the GetDiskFreeSpaceW function.
+**
+**
+**===================================================================*/
+
+#include <palsuite.h>
+
+
+int __cdecl main(int argc, char *argv[])
+{
+ DWORD dwSectorsPerCluster; /* sectors per cluster */
+ DWORD dwBytesPerSector; /* bytes per sector */
+ DWORD dwSectorsPerCluster_02; /* sectors per cluster */
+ DWORD dwBytesPerSector_02; /* bytes per sector */
+ DWORD dwNumberOfFreeClusters; /* free clusters */
+ DWORD dwTotalNumberOfClusters; /* total clusters */
+ BOOL bRc = FALSE;
+ WCHAR szwRootPath[10] = {'/','\0'};
+
+
+ if (0 != PAL_Initialize(argc,argv))
+ {
+ return FAIL;
+ }
+
+ /* test the NULL option which translates to the current drive */
+ bRc = GetDiskFreeSpaceW(NULL,
+ &dwSectorsPerCluster,
+ &dwBytesPerSector,
+ &dwNumberOfFreeClusters,
+ &dwTotalNumberOfClusters);
+ if (bRc != TRUE)
+ {
+ Fail("GetDiskFreeSpaceW: ERROR -> Failed with error code: %ld\n",
+ GetLastError());
+ }
+ else if (dwSectorsPerCluster == 0)
+ {
+ Fail("GetDiskFreeSpaceW: ERROR -> dwSectorsPerCluster returned 0\n");
+ }
+ else if (dwBytesPerSector == 0)
+ {
+ Fail("GetDiskFreeSpaceW: ERROR -> dwBytesPerSector returned 0\n");
+ }
+
+ /* test the root directory to the current drive */
+ bRc = GetDiskFreeSpaceW(szwRootPath,
+ &dwSectorsPerCluster_02,
+ &dwBytesPerSector_02,
+ &dwNumberOfFreeClusters,
+ &dwTotalNumberOfClusters);
+ if (bRc != TRUE)
+ {
+ Fail("GetDiskFreeSpaceW: ERROR -> Failed with error code: %ld\n",
+ GetLastError());
+ }
+ else if (dwSectorsPerCluster == 0)
+ {
+ Fail("GetDiskFreeSpaceW: ERROR -> dwSectorsPerCluster returned 0\n");
+ }
+ else if (dwBytesPerSector == 0)
+ {
+ Fail("GetDiskFreeSpaceW: ERROR -> dwBytesPerSector returned 0\n");
+ }
+ /*
+ ** make sure the values returned for NULL path and root path
+ ** are the same
+ */
+ else if (dwSectorsPerCluster_02 != dwSectorsPerCluster)
+ {
+ Fail("GetDiskFreeSpaceW: ERROR -> dwSectorsPerCluster for NULL path "
+ "(%u) should have been the same as the root path (%u).\n",
+ dwSectorsPerCluster,
+ dwSectorsPerCluster_02);
+ }
+ else if (dwBytesPerSector_02 != dwBytesPerSector)
+ {
+ Fail("GetDiskFreeSpaceW: ERROR -> dwBytesPerSector for NULL path "
+ "(%u) should have been the same as the root path (%u).\n",
+ dwBytesPerSector,
+ dwBytesPerSector_02);
+ }
+
+ PAL_Terminate();
+ return PASS;
+}