1 files changed, 136 insertions, 0 deletions
diff --git a/src/pal/tests/palsuite/file_io/WriteFile/test3/WriteFile.cpp b/src/pal/tests/palsuite/file_io/WriteFile/test3/WriteFile.cpp
new file mode 100644
index 0000000000..751f89ff2c
--- /dev/null
+++ b/src/pal/tests/palsuite/file_io/WriteFile/test3/WriteFile.cpp
@@ -0,0 +1,136 @@
+// 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:  WriteFile.c (test 3)
+**
+** Purpose: Tests the PAL implementation of the WriteFile function.
+**          Performs multiple writes to a file and verifies the results.
+**
+**
+**===================================================================*/
+
+
+#include <palsuite.h>
+
+
+const char* szStringTest = "The quick fox jumped over the lazy dog's back.\0";
+const char* szWritableFile = "writeable.txt";
+
+
+BOOL validateResults(const char* szString)
+{
+    FILE *pFile = NULL;
+    char szReadString[100];
+    DWORD dwBytesRead;
+    DWORD dwStringLength = strlen(szString);
+
+
+
+    memset(szReadString, 0, 100);
+
+    /* open the file */
+    pFile = fopen(szWritableFile, "r");
+    if (pFile == NULL)
+    {
+        Trace("couldn't open test file\n");
+        return FALSE;
+    }
+
+    dwBytesRead = fread(szReadString, sizeof(char), dwStringLength, pFile);
+    fclose(pFile);
+
+    if(dwBytesRead != dwStringLength)
+    {
+        Trace("dwbyteread != string length\n");
+        return FALSE;
+    }
+
+    if (strcmp(szReadString, szString))
+    {
+        Trace("read = %s  string = %s", szReadString, szString);
+        return FALSE;
+    }
+    return TRUE;
+}
+
+
+
+
+BOOL writeTest(const char* szString)
+{
+    HANDLE hFile = NULL;
+    DWORD dwBytesWritten;
+    BOOL bRc = FALSE;
+    BOOL bAllPassed = TRUE;
+    int nStringLength = 0;
+    char* szPtr = NULL;
+    int i = 0;
+
+    // create the test file 
+    hFile = CreateFile(szWritableFile, 
+        GENERIC_WRITE,
+        FILE_SHARE_WRITE,
+        NULL,
+        CREATE_ALWAYS,
+        FILE_ATTRIBUTE_NORMAL,
+        NULL);
+
+    if(hFile == INVALID_HANDLE_VALUE)
+    {
+        Trace("WriteFile: ERROR -> Unable to create file \"%s\".\n", 
+            szWritableFile);
+        return FALSE;
+    }
+
+    nStringLength = strlen(szString);
+    szPtr = (char*) szString;
+
+    for (i = 0; i < nStringLength; i++)
+    {
+        bRc = WriteFile(hFile, szPtr++, 1, &dwBytesWritten, NULL);
+        if ((bRc == FALSE) || (dwBytesWritten != 1))
+        {
+            bAllPassed = FALSE;
+        }
+    }
+    CloseHandle(hFile);
+
+    if (bAllPassed == FALSE)
+    {
+        Trace ("WriteFile: ERROR: Failed to write data.\n"); 
+        return FALSE;
+    }
+    else
+    {
+        return (validateResults(szString));
+    }
+
+    return TRUE;
+}
+
+
+
+
+int __cdecl main(int argc, char *argv[])
+{
+    const char *pString = szStringTest;
+    BOOL bRc = FALSE;
+
+    if (0 != PAL_Initialize(argc,argv))
+    {
+        return FAIL;
+    }
+
+
+    bRc = writeTest(pString);
+    if (bRc != TRUE)
+    {
+        Fail("WriteFile: ERROR -> Failed\n");
+    }
+
+    PAL_Terminate();
+    return PASS;
+}