1 files changed, 131 insertions, 0 deletions
diff --git a/src/pal/tests/palsuite/locale_info/WideCharToMultiByte/test4/test4.cpp b/src/pal/tests/palsuite/locale_info/WideCharToMultiByte/test4/test4.cpp
new file mode 100644
index 0000000000..8ab5fe90af
--- /dev/null
+++ b/src/pal/tests/palsuite/locale_info/WideCharToMultiByte/test4/test4.cpp
@@ -0,0 +1,131 @@
+// 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: test4.c
+**
+** Purpose: Tests that WideCharToMultiByte correctly handles WC_NO_BEST_FIT_CHARS
+**
+**
+**==========================================================================*/
+
+
+#include <palsuite.h>
+
+/* C with a circumflex */
+wchar_t ustr[2] = { 0x108, 0 };
+
+/* expected conversion when best fit is allowed on Windows */
+char* lpBestFitRes = "C";
+
+/* expected conversion when no default character is specified */
+char* lpResStr1 = "?";
+
+/* expected conversion when the default character is 'k' */
+char myDefaultChar = 'k';
+char* lpResStr2 = "k";
+
+int 
+TestWideCharToMultiByte(
+       IN UINT CodePage,
+       IN DWORD dwFlags,
+       IN LPCSTR lpDefaultChar,
+       IN LPSTR lpResStr)
+{
+  char mbstr[30];
+  int ret;
+  int testStatus = PASS;
+  BOOL usedDefaultChar = FALSE;
+
+  printf("WideCharToMultiByte (CodePage=%d, dwFlags=%#x, default=%c)\n",
+         CodePage, dwFlags, lpDefaultChar?*lpDefaultChar:' ');
+  ret = WideCharToMultiByte(CodePage, dwFlags, ustr, -1, mbstr, sizeof(mbstr), 
+                            lpDefaultChar, &usedDefaultChar);
+  if (ret != 0) {
+    printf("   converted C with circumflex to in Unicode to multibyte: "
+           "\"%s\"\n", mbstr);
+    printf("   used default character?: %d\n", usedDefaultChar);
+    if (strcmp(mbstr, lpResStr) != 0 || usedDefaultChar != TRUE) 
+    {
+       printf("!!!! failed conversion !!!!\n");
+       testStatus = FAIL;
+    }
+  }
+  else {
+    printf("!!!! failed conversion !!!!\n");
+    testStatus = FAIL;
+  }
+  return testStatus;
+}
+
+int __cdecl main(int argc, char *argv[])
+{    
+  int testStatus = PASS;
+
+  if (PAL_Initialize(argc, argv))
+  {
+      return FAIL;
+  }
+
+  /* Use WideCharToMultiByte to convert the string in code page CP_ACP.
+   * Note that the resulting string will be different on Windows PAL and 
+   * Unix PAL. On Windows, the default best fit behavior will map C with 
+   * circumflex to C. 
+   * 
+   *   testStatus |= TestWideCharToMultiByte(CP_ACP, 0, NULL, lpBestFitRes);
+   *
+   * On Unix, where there is no support for finding best fit, it will be 
+   * mapped to a '?'. In addition, it will trigger an ASSERT in the dbg/chk
+   * builds.
+   *
+   *   testStatus |= TestWideCharToMultiByte(CP_ACP, 0, NULL, lpResStr1);
+   */
+
+  /* Use WideCharToMultiByte with WC_NO_BEST_FIR_CHARS to convert the string 
+   * in CP_ACP (1252 by default). This will prevent it from mapping the C 
+   * with circumflex to its closest match in the ANSI code page: C
+   */
+  testStatus |= TestWideCharToMultiByte(CP_ACP, WC_NO_BEST_FIT_CHARS, NULL, lpResStr1);
+
+
+  /* Use WideCharToMultiByte with WC_NO_BEST_FIR_CHARS and a default character 
+   * to convert the string. This will prevent it from mapping the C with 
+   * circumflex to its closest match in the ANSI code page: C. It will be
+   * replaced with the specified default character.
+   */
+  testStatus |= TestWideCharToMultiByte(CP_ACP, WC_NO_BEST_FIT_CHARS, &myDefaultChar, lpResStr2);
+
+  /* Use WideCharToMultiByte to convert the string in code page 1253 
+   * Note that the resulting string will be different on Windows PAL and 
+   * Unix PAL. On Windows, the default best fit behavior will map C with 
+   * circumflex to C. 
+   * 
+   *   testStatus |= TestWideCharToMultiByte(1253, 0, NULL, lpBestFitRes);
+   *
+   * On Unix, where there is no support for finding best fit, it will be 
+   * mapped to a '?'. In addition, it will trigger an ASSERT in the dbg/chk
+   * builds.
+   *
+   *   testStatus |= TestWideCharToMultiByte(1253, 0, NULL, lpResStr1);
+   */
+
+  /* Use WideCharToMultiByte with WC_NO_BEST_FIR_CHARS to convert the string 
+   * in 1253. This will prevent it from mapping the C 
+   * with circumflex to its closest match in the ANSI code page: C
+   */
+  testStatus |= TestWideCharToMultiByte(1253, WC_NO_BEST_FIT_CHARS, NULL, lpResStr1);
+
+  /* Use WideCharToMultiByte with WC_NO_BEST_FIR_CHARS and a default 
+   * character to convert the string in 1253. This will prevent it from 
+   * mapping the C with circumflex to its closest match in the ANSI code 
+   * page: C. It will be replaced with the specified default character.
+   */
+  testStatus |= TestWideCharToMultiByte(1253, WC_NO_BEST_FIT_CHARS, &myDefaultChar, lpResStr2);
+
+  PAL_TerminateEx(testStatus);
+
+  return testStatus;
+}
+