1 files changed, 130 insertions, 0 deletions
diff --git a/src/pal/tests/palsuite/file_io/FlushFileBuffers/test1/FlushFileBuffers.cpp b/src/pal/tests/palsuite/file_io/FlushFileBuffers/test1/FlushFileBuffers.cpp
new file mode 100644
index 0000000000..246be64847
--- /dev/null
+++ b/src/pal/tests/palsuite/file_io/FlushFileBuffers/test1/FlushFileBuffers.cpp
@@ -0,0 +1,130 @@
+// 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:  FlushFileBuffers.c
+**
+** Purpose: Tests the PAL implementation of the FlushFileBuffers function
+** This tests checks the return values of FlushFileBuffers -- once on an
+** open handle and once on a closed handle.  
+**  
+** Depends:
+**       CreateFile
+**       WriteFile
+**       CloseHandle
+**       DeleteFileA
+**
+**
+**===================================================================*/
+
+#include <palsuite.h>
+
+
+int __cdecl main(int argc, char **argv)
+{
+    
+    int TheReturn;
+    HANDLE TheFileHandle;
+    DWORD temp;
+    DWORD originalSize=10000;
+    DWORD finalSize=10000;
+    const char* fileName="the_file";
+
+    /*                          1         2         3         4*/
+    char * SomeText = "1234567890123456789012345678901234567890";
+    
+
+    if (0 != PAL_Initialize(argc,argv))
+    {
+        return FAIL;
+    }
+  
+    
+    /* Open the file to get a HANDLE */    
+    TheFileHandle = 
+        CreateFile(
+            fileName,                 
+            GENERIC_READ|GENERIC_WRITE,  
+            FILE_SHARE_READ,                           
+            NULL,                        
+            OPEN_ALWAYS,                 
+            FILE_ATTRIBUTE_NORMAL,       
+            NULL);                       
+
+    if(TheFileHandle == INVALID_HANDLE_VALUE) 
+    {
+        Fail("ERROR: CreateFile failed.  Test depends on this function.");
+    }
+  
+    /* get the file size */
+    originalSize = GetFileSize (TheFileHandle, NULL) ; 
+    if(originalSize == INVALID_FILE_SIZE)
+    {
+         Fail("ERROR: call to GetFileSize faild with error "
+             "The GetLastError is %d.",GetLastError());
+    }
+    
+    /* Write something too the HANDLE.  Should be buffered */    
+    TheReturn = WriteFile(TheFileHandle,     
+                          SomeText,        
+                           strlen(SomeText),
+                          &temp,  
+                          NULL);
+    
+    if(TheReturn == 0) 
+    {
+        Fail("ERROR: WriteFile failed.  Test depends on this function.");
+    }
+
+    /* Test to see that FlushFileBuffers returns a success value */
+    TheReturn = FlushFileBuffers(TheFileHandle);
+    if(TheReturn == 0) 
+    {
+        Fail("ERROR: The FlushFileBuffers function returned 0, which "
+               "indicates failure, when trying to flush a valid HANDLE.  "
+               "The GetLastError is %d.",GetLastError());
+    }
+  
+    /* test if flush modified the file */
+    finalSize = GetFileSize (TheFileHandle, NULL) ; 
+    if(finalSize==INVALID_FILE_SIZE)
+    {
+        Fail("ERROR: call to GetFileSize faild with error "
+             "The GetLastError is %d.",GetLastError());
+    }
+    if(finalSize!=(originalSize+strlen(SomeText)))
+    {
+        Fail("ERROR: FlushFileBuffers failed. data was not written to the file");
+    }
+  
+  
+    /* Close the Handle */
+    TheReturn = CloseHandle(TheFileHandle);
+    if(TheReturn == 0) 
+    {
+        Fail("ERROR: CloseHandle failed.  This function depends "
+               "upon it.");
+    }
+    
+
+    /* Test to see that FlushFileBuffers returns a failure value */
+    TheReturn = FlushFileBuffers(TheFileHandle);
+    if(TheReturn != 0) 
+    {
+        Fail("ERROR: The FlushFileBuffers function returned non-zero, "
+               "which indicates success, when trying to flush an invalid "
+               "HANDLE.");
+    }  
+
+    /* make sure file does not exist */
+    if(DeleteFileA(fileName)== 0 )
+    {
+         Fail("ERROR: call to DeleteFileA faild with error "
+             "The GetLastError is %d.",GetLastError());
+    }
+    PAL_Terminate();
+    return PASS;
+}
+